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Matrix Strassen on Java

2011-06-19T22:51:00.000-07:00

Analias algorithm requires us to make the most effective algorithm. Yesterday I get an assignment to compare the Matrix Multiplication with Classic or regular method compared to Strassen method.
Strassen Matrix makes me stress ..

About Strassen
Show code and screenshoot....

/*

 * rischan 
 * play with c0de

 * Website: http://www.indocoding.com/

 * Perkalian Matrik dengna Metode biasa dan Strassen

 */





import java.io.*;

import java.util.Calendar; //untuk menghitung waktu proses atau scedule task



public class Strassen

{

 public static BufferedReader br =new BufferedReader(new InputStreamReader(System.in));

 public Strassen()   throws IOException

 {

  int n;

  int[][] a, b, c;

  

  System.out.print("Masukkan berapa kolom ato baris : (matrik harus simetris) ");

  n = Integer.parseInt(br.readLine());

  

  a = new int[n][n];

  b = new int[n][n];

  c = new int[n][n];

  

  System.out.print("\n\n\nMasukkan Nilai Matrix:\n\n");

  for(int i=0; i<n; i++)

  {

   for(int j=0; j<n; j++)

   {

    System.out.print("Masukkan nilai ke ("+(i+1)+","+(j+1)+"): ");

    a[i][j] = Integer.parseInt(br.readLine());

   }

  }

  System.out.print("\n\n\5nMasukkan Nilai Matrix:\n");

  for(int i=0; i<n; i++)

  {

   for(int j=0; j<n; j++)

   {

    System.out.print("Masukkan nilai ke ("+(i+1)+","+(j+1)+"): ");

    b[i][j] = Integer.parseInt(br.readLine());

   }

  }

  

  Calendar t1 = Calendar.getInstance();

  System.out.print("\n\nMatrix 1 X Matrix 2 adalah:\nDengan Cara biasa :\n");

  MatrikBiasa(a, b, c);

  printArray(c);

  Calendar t2 = Calendar.getInstance();

  System.out.print("Waktu Untuk Menyelesaikan(milisecon): "+(t2.getTimeInMillis() - t1.getTimeInMillis()  ));

  

  t1 = Calendar.getInstance();

  System.out.print("\n\nDengan Cara Strassen :\n");

  c = MatrikStress(a, b);

  printArray(c);

  t2 = Calendar.getInstance();

  System.out.print("Waktu Untuk Menyelesaikan(milisecon) "+(t2.getTimeInMillis() - t1.getTimeInMillis()  ));

 }

 

 public void MatrikBiasa(int[][] a, int[][] b, int[][] c) //perkalian dengan metode Biasa 

 {

  int n = a.length;

  for(int i=0; i<n; i++)

   for(int j=0; j<n; j++)

    for(int k=0; k<n; k++)

     c[i][j] += a[i][k] * b[k][j];

 }

 

 public int [][] MatrikStress(int [][] A, int [][] B)

 {

  int n = A.length;

  int [][] result = new int[n][n];

  

  if((n%2 != 0 ) && (n !=1)) // jika colom ato baris ganjil atau %2 !=0 maka n menjadi n+1

  {

   int[][] a1, b1, c1;

   int n1 = n+1;

   a1 = new int[n1][n1];

   b1 = new int[n1][n1];

   c1 = new int[n1][n1];

   

   for(int i=0; i<n; i++)

    for(int j=0; j<n; j++)

    {

     a1[i][j] =A[i][j];

     b1[i][j] =B[i][j];

    }

   c1 = MatrikStress(a1, b1);

   for(int i=0; i<n; i++)

    for(int j=0; j<n; j++)

     result[i][j] =c1[i][j];

   return result;

  }

  

  if(n == 1) // jika user menginputkan 1 untuk jumlah kolom ato baris maka dilakukan cara biasa

  {

   result[0][0] = A[0][0] * B[0][0];

  }

  else

  { //A11 dsb adalah matrik child, jadi matrik induk harus di split terlebih dahulu

   int [][] A11 = new int[n/2][n/2];

   int [][] A12 = new int[n/2][n/2];

   int [][] A21 = new int[n/2][n/2];

   int [][] A22 = new int[n/2][n/2];

   

   int [][] B11 = new int[n/2][n/2];

   int [][] B12 = new int[n/2][n/2];

   int [][] B21 = new int[n/2][n/2];

   int [][] B22 = new int[n/2][n/2];

   

   //fungtion untuk memposisikan array bilangan hasil split

   bagiArray(A, A11, 0 , 0);

   bagiArray(A, A12, 0 , n/2);

   bagiArray(A, A21, n/2, 0);

   bagiArray(A, A22, n/2, n/2);

   

   bagiArray(B, B11, 0 , 0);

   bagiArray(B, B12, 0 , n/2);

   bagiArray(B, B21, n/2, 0);

   bagiArray(B, B22, n/2, n/2);

   

   // rumus matrik strassen

   int [][] P1 = MatrikStress(tambahMatrik(A11, A22), tambahMatrik(B11, B22));

   int [][] P2 = MatrikStress(tambahMatrik(A21, A22), B11);

   int [][] P3 = MatrikStress(A11, PenguranganMatrik(B12, B22));

   int [][] P4 = MatrikStress(A22, PenguranganMatrik(B21, B11));

   int [][] P5 = MatrikStress(tambahMatrik(A11, A12), B22);

   int [][] P6 = MatrikStress(PenguranganMatrik(A21, A11), tambahMatrik(B11, B12));

   int [][] P7 = MatrikStress(PenguranganMatrik(A12, A22), tambahMatrik(B21, B22));

   

   int [][] C11 = tambahMatrik(PenguranganMatrik(tambahMatrik(P1, P4), P5), P7);

   int [][] C12 = tambahMatrik(P3, P5);

   int [][] C21 = tambahMatrik(P2, P4);

   int [][] C22 = tambahMatrik(PenguranganMatrik(tambahMatrik(P1, P3), P2), P6);

   

   //mengembalikan dari bagiArray dan menghasilkan result

   BalekneArray(C11, result, 0 , 0);

   BalekneArray(C12, result, 0 , n/2);

   BalekneArray(C21, result, n/2, 0);

   BalekneArray(C22, result, n/2, n/2);

  }

  return result;

 }

 

 public int [][] tambahMatrik(int [][] A, int [][] B) //function untuk penjumlahan matrik

 {

  int n = A.length;

  

  int [][] result = new int[n][n];

  

  for(int i=0; i<n; i++)

   for(int j=0; j<n; j++)

   result[i][j] = A[i][j] + B[i][j];

  

  return result;

 }

 

 public int [][] PenguranganMatrik(int [][] A, int [][] B) //function pengurangna matrik

 {

  int n = A.length;

  

  int [][] result = new int[n][n];

  

  for(int i=0; i<n; i++)

   for(int j=0; j<n; j++)

   result[i][j] = A[i][j] - B[i][j];

  

  return result;

 }

 

 public void bagiArray(int[][] parent, int[][] child, int iB, int jB) //function untuk mensplit matrik

 {

  for(int i1 = 0, i2=iB; i1<child.length; i1++, i2++)

   for(int j1 = 0, j2=jB; j1<child.length; j1++, j2++)

   {

    child[i1][j1] = parent[i2][j2];

   }

 }

 

 public void BalekneArray(int[][] child, int[][] parent, int iB, int jB) //untuk mengembalikan split

 {

  for(int i1 = 0, i2=iB; i1<child.length; i1++, i2++)

   for(int j1 = 0, j2=jB; j1<child.length; j1++, j2++)

   {

    parent[i2][j2] = child[i1][j1];

   }

 }

 

 public void printArray(int [][] array)

 {

  int n = array.length;

  

  System.out.println();

  for(int i=0; i<n; i++)

  {

   for(int j=0; j<n; j++)

   {

    System.out.print(array[i][j] + "\t");

   }

   System.out.println();

  }

  System.out.println();

 }

 

 public static void main(String[] args) throws IOException

 {

  new Strassen();

 }

}

Screenshoot...

Untuk gambar yang pertama Waktu penyelesaian Perkalian matrik dengan matrik biasa maupun strassen hasilnya sama, tapi coba lihat gambar ke dua, yaitu perhitungan matrik 4x4 dengan bilangan yang cukup sulit akan terlihat kalau matrik strassen lebih efisien.

So, kesimpulanya adalah perkalian matrik clasic/bruteforce atau perkalian matrik biasa itu efektif bila digunakan untuk matrik yang kecil, sedangkan untuk matrik dalam jumlah besar maka Strassen solusi yang bisa diambil. OK..

Comparison operator in Java / Operator Perbandingan Java

2011-05-31T12:25:00.000-07:00

Comparison operator menghasilkan nilai boolean. Adapun yang termasuk comparison operator
sebagai berikut:
• Ordinal comparison: <, <=, >, >=
• The instanceof Operator : memeriksa class dari sebuah objek
• The Equality Comparison Operators: == and !=
Keterangan lebih jelas mengenai ordinal dan comparison operator dapat dilihat pada tabel disamping.

Demo Relasi java

// rischan *www.indocoding.com*
// Relasi java
public class RelasiDemo {
 public static void main(String[] args) {
 //beberapa nilai
 int i = 37;
 int j = 42;
 int k = 42;
 System.out.println("Nilai variabel...");
 System.out.println(" i = " + i);
 System.out.println(" j = " + j);
 System.out.println(" k = " + k);
 //lebih besar dari
 System.out.println("Lebih besar dari...");
 System.out.println(" i > j = " + (i > j)); //false
 System.out.println(" j > i = " + (j > i)); //true
 System.out.println(" k > j = " + (k > j)); //false
 //lebih besar atau sama dengan
 System.out.println("Lebih besar dari atau sama dengan...");
 System.out.println(" i >= j = " + (i >= j)); //false
 System.out.println(" j >= i = " + (j >= i)); //true
 System.out.println(" k >= j = " + (k >= j)); //true
 //lebih kecil dari
 System.out.println("Lebih kecil dari...");
 System.out.println(" i < j = " + (i < j)); //true
 System.out.println(" j < i = " + (j < i)); //false
 System.out.println(" k < j = " + (k < j)); //false
 //lebih kecil atau sama dengan
 System.out.println("Lebih kecil dari atau sama dengan...");
 System.out.println(" i <= j = " + (i <= j)); //true
 System.out.println(" j <= i = " + (j <= i)); //false
 System.out.println(" k <= j = " + (k <= j)); //true
 //sama dengan
 System.out.println("Sama dengan...");
 System.out.println(" i == j = " + (i == j)); //false
 System.out.println(" k == j = " + (k == j)); //true
 //tidak sama dengan
 System.out.println("Tidak sama dengan...");
 System.out.println(" i != j = " + (i != j)); //true
 System.out.println(" k != j = " + (k != j)); //false
      }
}

Screenshoot...

Complement & Conditional(Ternary) in Java

2011-05-31T11:58:00.000-07:00

Dibawah ini ada 3 Listing Program yaitu program untuk Complement di Java, kemudian yang dua lagi yaitu program Conditional dalam bentuk ternary, semoga membantu..

Complement

// rischan *www.indocoding.com*
// Java Complement

class Complement {
 public static void main(String[] args) {
 int i;
 i = ~7;
 System.out.println("Hasil operasi ~ :" +i);
 }
}

ConditionalOperator1

// rischan *www.indocoding.com*
// Ternary Operator Java
public class ConditionalOperator1 {
 public static void main( String[] args ){
  String status = "";
  int grade = 80;
  //mendapatkan status pelajar
  status = (grade >= 60)?"Passed":"Fail";
  //print status
  System.out.println( status );
 }
}

ConditionalOperator2

// rischan *www.indocoding.com*
// Conditional Operator Java
class ConditionalOperator2 {
 public static void main( String[] args ){
  int score = 0;
  char answer = 'a';
  score = (answer == 'a') ? 10 : 0;
  System.out.println("Score = " + score );
 }
}

Screenshoot...
Complement

ConditionalOperator1

ConditionalOperator2

Increment & Decrement Java

2011-05-31T11:39:00.000-07:00

Dibawah ini contoh code increment decrement di java, silahkan disimak..

// rischan *www.indocoding.com*
// Increment Decrement on Java

class IncDec {
    public static void main(String[] args) {
      int a=1, b=9;
      System.out.println("Nilai sebelum increment-decrement");
      System.out.println("a =" +a+ "; b =" +b);
      a = ++a;
      b = --b;
      System.out.println("Nilai setelah increment-decrement");
      System.out.println("a =" +a+ "; b =" +b);
    }
}

Screenshoot...

and, or, xor on Java Programming

2011-05-31T11:22:00.000-07:00

Banyak sekali jenis-jenis operator dalam bahasa pemrograman, begitu juga dengan java, kalau sebelumnya saya sudah menulis tentang operator bitwise (&,|,^) tapi ada operator lain yang akan saya bahas sekarang, yaitu operator and, or, xor. Terus bedanya dengan bitwise (&,|,^) apa? kalau operator bitwise (&,|,^) itu adalah operator penjumlahan binner, jadi kedua operand akan dijadikan biner kemudian ditambahkan, bedangan dengan operator and, or atau xor. Apa bedanya ..ayo kita amati bersama..

AND

// rischan *www.indocoding.com*
// TestAND java

public class TestAND {
 public static void main( String[] args){
  int i = 0;
  int j = 10;
  boolean test=false;
  //demonstrasi &&
  test = (i > 10) && (j++ > 9) ;
  System.out.println (i);
  System.out.println (j);
  System.out.println (test);
  //demonstrasi &
  test = (i > 10) &  (j++ > 9) ;
  System.out.println (i);
  System.out.println (j);
  System.out.println (test);
 }
}

// rischan *www.indocoding.com*
// TestOR java

public class TestOR {
 public static void main( String[] args ){
 int i = 0;
 int j = 10;
 boolean test= false;
 //demonstrasi ||
 test = (i < 10) || (j++ > 9);
 System.out.println(i);
 System.out.println(j);
 System.out.println(test);
 //demonstrasi |
 test = (i < 10) | (j++ > 9);
 System.out.println(i);
 System.out.println(j);
 System.out.println(test);
    }
}

XOR

// rischan *www.indocoding.com*
// TestXOR java


public class TestXOR {
 public static void main( String[] args ){
 boolean val1 = true;
 boolean val2 = true;
 System.out.println(val1 ^ val2);
 val1 = false;
 val2 = true;
 System.out.println(val1 ^ val2);
 val1 = false;
 val2 = false;
 System.out.println(val1 ^ val2);
 val1 = true;
 val2 = false;
 System.out.println(val1 ^ val2);
 }
}

Screenshoot...
AND

XOR

Bitwise Operator java

2011-05-31T10:17:00.000-07:00

Java's bitwise operators operate on individual bits of integer (int and long) values. If an operand is shorter than an int, it is promoted to int before doing the operations.
It helps to know how integers are represented in binary. For example the decimal number 3 is represented as 11 in binary and the decimal number 5 is represented as 101 in binary. Negative integers are store in two's complement form. For example, -4 is 1111 1111 1111 1111 1111 1111 1111 1100.

Logical Bitwise Operations
bit 1	bit 2	OR (`\|`)	AND (`&`)	XOR (`^`)
0	0	0	0	0
1	0	1	0	1
0	1	1	0	1
1	1	1	1	0

The bitwise operators

Operator	Name	Example	Result	Description
`a & b`	and	3 & 5	1	1 if both bits are 1.
`a \| b`	or	3 \| 5	7	1 if either bit is 1.
`a ^ b`	xor	3 ^ 5	6	1 if both bits are different.
`~a`	not	~3	-4	Inverts the bits.
`n << p`	left shift	3 << 2	12	Shifts the bits of n left p positions. Zero bits are shifted into the low-order positions.
`n >> p`	right shift	5 >> 2	1	Shifts the bits of n right p positions. If n is a 2's complement signed number, the sign bit is shifted into the high-order positions.
`n >>> p`	Unsigned RightShift	-4 >>> 28	15	Shifts the bits of n right p positions. Zeros are shifted into the high-order positions.

demo bitwise operator (&,|,^)...

// rischan *www.indocoding.com*
// Bitwise demo
class Bitdemo {
 public static void main (String [] args) {
  int bitmask= 0x000F; //00000000001111
  int val = 0x2222;   //10001000100010
  System.out.println(val & bitmask); //00000000000010 /des 2
  System.out.println(val | bitmask); //10001000101111 /des 8751
  System.out.println(val ^ bitmask); //10001000101101 /des 8749
 }
}

// rischan *www.indocoding.com*
// left shift Java

class LeftShift {
 public static void main(String[] args) {
 int i = 3;
 i = i << 2;
 System.out.println(i);
 }
}

left shift RightShift java

// rischan *www.indocoding.com*
// RightShift java
class RightShift {
 public static void main(String[] args) {
 int i = 7;
 i = i >> 2;
 System.out.println(i);
 }
}

UnsignedRightShift

// rischan *www.indocoding.com*
// UnsignedRightShift java

class UnsignedRightShift {
 public static void main(String[] args) {
 int i = -1;
 i = i >>> 30;
 System.out.println(i);
 }
}

Screenshoot...

(&,|,^)

LeftShift

RightShift

UnsignedRightShift

Aritmaitika Java II / Java Arithmatic II

2011-05-31T09:43:00.000-07:00

Melanjutkan posting sebelumnya ..

// rischan *www.indocoding.com*
// Arithmatic Test2

public class aritmatikaDemo {
 public static void main (String [] args){
  int i = 2;
  int j = 4;
  double x = 27.475;
  double y = 7.22;
  System.out.println("Variable values...");
  System.out.println(" i = " + i);
  System.out.println(" j = " + j);
  System.out.println(" x = " + x);
  System.out.println(" y = " + y); 
  //penjumlahan angka
  System.out.println("Adding...");
  System.out.println(" i + j = " + (i + j));
  System.out.println(" x + y = " + (x + y));
  //pengurangan angka
  System.out.println("Subtracting...");
  System.out.println(" i - j = " + (i - j));
  System.out.println(" x - y = " + (x - y));
  //perkalian angka
  System.out.println("Multiplying...");
  System.out.println(" i * j = " + (i * j));
  System.out.println(" x * y = " + (x * y));
  //pembagian angka
  System.out.println("Dividing...");
  System.out.println(" i / j = " + (i / j));
  System.out.println(" x / y = " + (x / y));
  //menghitung hasil modulus dari pembagian
  System.out.println("Computing the remainder...");
  System.out.println(" i % j = " + (i % j));
  System.out.println(" x % y = " + (x % y));
  //tipe penggabungan
  System.out.println("Mixing tipes...");
  System.out.println(" j + y = " + (j + y));
  System.out.println(" i * x = " + (i * x));
 }
}

Screenshoot...

Conversion and Casts in java

2011-05-31T07:51:00.000-07:00

This example illustrates that what is type casting? Type Casting refers to changing an entity of one datatype into another. This is important for the type conversion in developing any application. If you will store a int value into a byte variable directly, this will be illegal operation. For storing your calculated int value in a byte variable you will have to change the type of resultant data which has to be stored.

// rischan *www.indocoding.com*
// Casting on Java
class EksCasting1 {
 public static void main(String[] args) {
  int a = 130;
  byte b = (byte) a;
  System.out.println("a = " +a+ " dalam tipe int"); //a=130
  System.out.println("b = " +b+ " dalam tipe byte"); //b=-126
 }
}

See screenshoot..

Java Type Of Data II / Tipe Data Java II

2011-05-31T07:32:00.000-07:00

Below the program name is TipeData2.java that can help us to understand the type of data in java especially string data type, in this program there are examples to add strings, replace strings to uppercase,lowercase, etc. Save this program with the same name with the name of the class.

class TipeData2 {
public static void main(String[] args) {
 byte  b=0x55;
 short s =0x55ff;
 int i =1000000;
 long  l =0xffffffffL;
 char  c = 'a';
 float f = .25f;
 double  d = .00001234;
 boolean bool=true;
 String str= "Universitas Islam";
 System.out.println("byte b = "+b); //85
 System.out.println("short s = "+s); //22015
 System.out.println("int i = "+i); //1000000
 System.out.println("char c = "+c); //a
 System.out.println("float f = "+f); //0.25
 System.out.println("long l = " +l); //4294967295
 System.out.println("double d = "+d); //1.234E-5
 System.out.println("str.charAt(1) = "+str.charAt(1)); //n
 System.out.println("str.concat(\"Yogyakarta\") ="+str.concat("Yogyakarta"));//Universitas IslamYogyakarta
 System.out.println("str.length() = " +str.length()); //17
 System.out.println("str.substring(0,11) = " +str.substring(0,11)); //Universitas
 System.out.println("str.substring(12) = " + str.substring(12)); //Islam
 System.out.println("str.toUpperCase() = " +str.toUpperCase()); //UNIVERSITAS ISLAM
 System.out.println("str.toLowerCase() = " +str.toLowerCase()); //universitas islam
 System.out.println("str.replace('e','O') = " +str.replace('e','O')); //Univ0rsitas Islam
 System.out.println("str.replace(\"Islam\", \"Iman\") = "+str.replace("Islam" , "Iman")); //Universitas Iman
 }
}

Java Type Of Data I / Tipe Data Java I

2011-05-31T07:10:00.000-07:00

Below is a program that can help us to understand the type of data in java, save with the same name with the name of the class..

// rischan *www.indocoding.com*
// Java TipeData

public class TipeData {
 public static void main(String args[]){
  int a=6;
  int b=(int)5.3456;
  int c=(int)(27/5);
  int d=(int)27.5/5;
  int e=27/(int)5.5;
  int f=27/5;

  float g=6;
  float h=(float)5.12345;
  float i=(float)(27/5);
  float j=(float)27.5/5;
  float k=27/(float)5.5;
  float l=27/5f;
  float m=(int)k+(int)h;
  float n=(float)(int)k/(int)h;
  char o='A';
  String p="UIN SUKA";
  String q=p+" YOGYA";
  String r=q+"KARTA";
  String s=o+"KADEMIKA";
  String t=s+" "+r;

  System.out.println("Nilai a="+a); //a=6
  System.out.println("Nilai b="+b); //b=5
  System.out.println("Nilai c="+c); //5
  System.out.println("Nilai d="+d); //5
  System.out.println("Nilai e="+e); //5
  System.out.println("Nilai f="+f); //5
  System.out.println("Nilai g="+g); //6.0
  System.out.println("Nilai h="+h); //5.12345
  System.out.println("Nilai i="+i); //5.0
  System.out.println("Nilai j="+j); //5.5
  System.out.println("Nilai k="+k); //4.909091
  System.out.println("Nilai l="+l); //5.4
  System.out.println("Nilai m="+m); //9.0
  System.out.println("Nilai n="+n); //0.8
  System.out.println("Karakter o="+o); //A
  System.out.println("String p="+p); //UIN SUKA
  System.out.println("Nilai q="+q); //UIN SUKA YOGYA
  System.out.println("Nilai r="+r); //UIN SUKA YOGYAKARTA
  System.out.println("Nilai s="+s); //AKADEMIKA
  System.out.println("Nilai t="+t); //AKADEMIKA UIN SUKA YOGYAKARTA
 }
}

See screenshoot...

Aritmaitika Java / Java Arithmatic

2011-05-31T06:48:00.000-07:00

This program will help us understand the simple arithmetic in java, please copy the following program then save same name with the class name, compile it and then run, here authors use the javac in Windows 7 and run using cmd..

// rischan *www.indocoding.com*
// Arithmatic Test
class Itungan {
 public static void main (String args[]) {
  short x = 6;
  int y = 4;
  float a = 12.5f;
  float b = 7f;

  System.out.println("x is " + x + ", y is " + y); // x is 6, y is 4
  System.out.println("x + y = " + (x + y));  //10
  System.out.println("x - y = " + (x - y));  //2
  System.out.println("x / y = " + (x / y));  //1
  System.out.println("x % y = " + (x % y));  //2
  System.out.println("a is " + a + ", b is " + b); //a is 12.5 , b is 7.0
  System.out.println("a / b = " + (a / b)); // a/b=1.78523236
 }
 }

See screenshoot...

Tipe Data Java

2011-05-24T21:29:00.000-07:00

Seperti bahasa pemrograman lainnya, Java mempunyai 8 tipe data primitif, yang mana 4 bertipe integer(bilangan bulat) , 2 bertipe floating-point(bilangan pecahan) dan yang 2 terakhir bertipe boolean dan char.Tipe data tersebut antara lain :

Integer

byte : Memiliki nilai integer dari -128 sampai +127 dan menempati 1 byte ( 8 bits ) di memori.
short : Memiliki nilai integer dari -32768 sampai 32767 dan menempati 2 bytes ( 16 bits ) di memori.

int : Memiliki nilai integer dari -2147483648 sampai 2147483647 dan menempati 4 bytes ( 32 bits ) di memori.

long : Memiliki nilai dari -9223372036854775808 sampai 9223372036854775807 dan menempati 8 bytes ( 64 bits ) di memori.

Bilangan integer biasanya menggunakan int, dan bukan byte,short maupun long. Bilangan integer juga mengenal nilai positif dan negatif ( signed number ). Tipe data byte dan short hanya digunakanpada aplikasi khusus yang memperhatikan penggunaan memori.
Sedangkan long jarang digunakan karena jarang memerlukan bilangan sebesar kapasitas long.

Floating Point

float : memiliki nilai -3.4×10(pangkat ’8′) sampai +3.4×10(pangkat ’8′) dan menempati 4 byte di memori
double : memiliki nilai -1.7×10(pangkat 308) sampai +1.7×10(pangkat 308).

Semua bilangan pecahan atau desimal dalam Java tanpa diakhiri huruf f akan dianggap sebagai double. Sedangkan bilangan yang ingin dikategorikan sebagai float harus diakhiri dengan huruf F.
Misalnya : 4.22 F atau 2.314f. Sedangkan untuk bilangan double, bisa menambah dengan huruf D, karena secara default bilangan dengan koma atau pecahan atau desimal akan dianggap sebagai double

Boolean Dan Char

boolean : Dalam Java dikenal tipe data boolean yang terdiri dari dua nilai saja, yaitu true dan false. Boolean sangat penting dalam mengevaluasi suatu kondisi, dan sering digunakan untuk menentukan alur program.
char : Char adalah karakter tunggal yang didefinisikan dengan diawali dan diakhiri dengan tanda ‘ ( petik tunggal ). Char berbeda dengan String, karena String bukan merupakan tipe data primitif, tetapi sudah merupakan sebuah objek. Tipe char mengikuti aturan unicode, sehingga dapat menggunakan kode /u kemudian diikuti bilangan dari 0 sampai 65535, tetapi yang biasa digunakan adalah bilangan heksadesimal dari 0000 sampai FFFF.Misalnya : ‘\u123’ Selain karakter biasa, juga terdapat karakter khusus yang didefinisikan dengan cara mengawalinya menggunakan tanda \ seperti pada tabel berik

Kode	Nama	Unicode
\b	Backspace	\u0008
\t	Tab	\u0009
\n	Linefeed	\u000a
\r	Carriage Return	\u000d
\*	Double Quote	\u0027
\’	Single Quote	\u0022
\\	Backslash	\u005c

Perbedaan Tipe Data Primitif dan Tipe Data Referensi
Tipe data primitif merupakan tipe data dasar yang dikenal oleh Java. Variabel dengan tipe data primitif dapat langsung digunakan untuk ‘memegang’ data yang sesuai dengan tipe datanya. Contoh : int var = 3; maka nilai variabel var adalah 3.

Sedangkan tipe data referensi digunakan untuk semua tipe data selain tipe data primitif termasuk di sini adalah array dan class. Variabel dengan tipe data referensi tidak ‘memegang’ secara langsung nilai yang hendak disimpan, melainkan variabel ini hanya ‘memegang’ referensi (alamat) dari nilai yang sebenarnya yang ada di memori.

Reason Using Java ( Kenapa harus Java? )

2011-05-24T20:43:00.000-07:00

Alasan Kenapa Java?

Bersifat portable dan platform independent . Program Java yang Anda tulis akan dapat dieksekusi di platform mana pun tanpa memerlukan kompilasi ulang (portable) asalkan Java Virtual Machine untuk platform tersebut tersedia.
Memiliki garbage collection yang dapat mendealokasikan memori secara otomatis. Anda tidak perlu secara eksplisit membebaskan suatu lokasi memori yang dipakai karena ini akan dilakukan secara otomatis oleh Java.

Menghilangkan pewarisan berganda yang terdapat pada C++. Walaupun kelihatannya lebih sebagai suatu kekurangan, namun banyak para ahli yang mengakui bahasa konsep pewarisan berganda lebih banyak mengakibatkan kerugian dari pada keuntungan. Java telah didesain sedemikian rupa sehingga Anda tidak akan memerlukan tehnik ini dalam pembuatan program apa pun.

Mengurangi pointer aritmetik. Pengaksesan lokasi memori secara langsung dengan menggunakan pointer memungkinkan program untuk melakukan suatu tindakan yang tidak seharusnya atau tidak boleh dilakukan. Untuk mengurangi dan menghilangkan kemungkinan kesalahan seperti ini, penggunaan pointer pada Java telah dibatasi dengan menggunakan reference.

Memiliki array sejati.

Mengurangi kerancuan antara pemberian nilai pada statement kondisional. Contoh penggunaan tanda ‘=’ dengan ‘==’ pada kondisi if.

Bila ada kesulitan mudah untuk mencari solusi, karena Java adalah bahasa pemrograman yang paling banyak digunakan.

Library yang Lengkap.

Karena OOP jadi sangat cocok bila digunakan untuk membangun program yang besar.

Dan masih banyak lainya, silahkan cari di google.

Karakteristik Java

Berorientasi Objek, Java telah menerapkan konsep pemrograman berorientasi objek yang modern dalam implementasinya.
Robust, Java mendorong pemrograman yang bebas dari kesalahan dengan bersifat strongly typed dan memiliki runtime checking.
Portable, program Java dapat dieksekusi di platform mana pun selama tersedia Java Virtual Machine untuk platform tersebut.
Multithreading, Java mendukung penggunaan multithreading yang telah terintegrasi secara langsung dalam bahasa Java.
Dinamis, program Java dapat melakukan suatu tindakan yang ditentukan pada saat eksekusi program dan bukan pada saat kompilasi.
Sederhana, Java menggunakan bahasa yang sederhana dan mudah dipelajari.
Terdistribusi, Java didesain untuk berjalan pada lingkungan yang terdistribusi seperti halnya internet.
Aman, aplikasi yang dibuat dengan bahasa Java dapat dipastikan keamanannya terutama untuk aplikasi internet.
Netral secara arsitektur, Java tidak terikat pada suatu mesin atau sistem operasi tertentu.
Interpreted, aplikasi Java dapat dieksekusi pada platform yang berbeda-beda dengan melakukan interpretasi pada bytecode.
Berkinerja Tinggi, bytecode Java telah sangat teroptimasi, sehingga eksekusi program dapat dilakukan secara cepat sekalipun dilakukan dengan cara interpretasi terhadap bytecode.

gud luck..

Remastering Linux

2011-05-24T19:43:00.000-07:00

Untuk tugas akhir mahasiswa yang mengambil mata kuliah Sistem Operasi adalah Remastering Distro Linux, tugas dikumpulkan 1 minggu sebelum UAS dan dipresentasikan, ini ada 20an modul yang bisa dipelajari silahkan di download. Semoga Bermanfaat.

Remastering Fedora

Puppy Linux English Version

Artikel Knnopix vs Mandrake

Remastering Ubuntu

Remastering Knnopix 2

Remastering Fedora Core6

Remastering Linux English Version

Remastering Linux untuk menghemat media penyimpanan

Remastering Slackware

Remastering Mandriva

Remastering Fedora 10

Remastering Ubuntu 9.10

Buku Remastering Ubuntu

Tentang Distro Linux Ubuntu

Convert Binary into Decimal with Java

2011-05-23T22:44:00.000-07:00

I have assigment from my lecture, how to convert binary to Decimal, now i wanna share u with Java Code.Compaile use Javac On Ubuntu 10.10. Save, Name:

binarytodecimal.java

/* rischan wanna to be c0der  -- Convert Binary into Decimal
 *                       java Coding OK
 *           www.indocOding.com             
 */

import java.lang.Exception; //Exception handler
import javax.swing.JOptionPane; 
//will be using the JOptionPane methods for input and output


public class binarytodecimal{
  
 public static void main (String[] args){
  
  
  try {
  String bil = JOptionPane.showInputDialog("Enter BINNER :: ");
  int[] arr_bil= new int[32];
  String[] st= new String[32];
  double hasil=0,result=0;
  int a=0;
  char t;
   for(int i=0;i<=bil.length()-1;i++)
   {
    t = bil.charAt(i);
    st[i]=Character.toString(t);
   }
   
   for(int i=bil.length()-1;i>=0;i=i-1)
   {
    arr_bil[a]=Integer.parseInt(st[i]);
    hasil= arr_bil[a]* (Math.pow(2,a));
    result=result+hasil;
    a++;
   }

  {
  int resultIn = (int)result;
  System.out.println("Binner : "+bil);
  System.out.println("Decimal : "+resultIn);
  }
  
 } catch (Exception e ){
  System.out.println("Oh No...Please enter right value .");
 }
 }
}

ScreenShoot Output, see this image..

Gallery (CMS Reviews)

2011-05-23T21:00:00.000-07:00

Now I'll give a little information about the CMS Gallery as I know, and certainly still a lot that I do not know, for more details can be found on google. :-)

4images Gallery
Web Server: Apache recommended
Programming Language: PHP
Database: MySQL
License: free for private and non-commercial use
Description: 4images is a powerful web-based image gallery management system. Features include comment system, user registration and mangagement, password protected administration area with browser-based upload and HTML templates for page layout and design.

More features are: RSS feeds, search engine, automatic thumbnail generation, extensive user administration, upload function for users, showing IPTC and EXIF data of images, rating of images, spam protection, protection against hotlinking, newsletter function, e-cards, integrated database backup function, etc.

Birch
Web Server: Apache (With the ability to use .htaccess files)
Programming Language: N/A
Database: No database (XML file)
License: GNU General Public License (GPL)
Description: Birch is a package of scripts that runs a photoblog. It displays and archives photos, with captions, and has an easy to use administrator interface that allows you to upload new photos and change the captions on old ones. It uses an XML file to store the photo information, so no database is needed.

Gallery 2
Web Server: Apache, Microsoft IIS, Zeus, ...
Programming Language: PHP
Database: MySQL, PostgreSQL, Oracle, DB2
License: GNU General Public License (GPL)
Description: Gallery is the next generation of open source photo sharing web applications. Gallery gives you an intuitive way to blend photo management seamlessly into your own website whether you're running a small personal site or a large community site. Hundreds of thousands of people and organizations are using Gallery to create personalized photo albums on their websites.

Qdig - Quick Digital Image Gallery
Web Server: N/A
Programming Language: PHP
Database: No database
License: GNU General Public License (GPL)
Description: Qdig is an easy-to-use PHP script that dynamically presents your digital image files as an online gallery or set of galleries.
Qdig is a simple but flexible one-file script. Despite its simplicity, Qdig has quite a few features. It's easy to install and galleries are easy to organize and manage using your favorite FTP or SCP file management program.

Plogger
Web Server: N/A
Programming Language: PHP
Database: MySQL
License: Free
Description: Plogger is the next generation in open-source photo gallery systems. A web application not bloated with superfluous features or complicated configuration settings. Plogger is a simple yet powerful tool — everything you need to share your images with the world. Plogger is your photos integrated into your website, a fully featured photo sharing package with an attractive and easy to use administrative interface that makes managing your galleries a breeze. Integrating our gallery software into your website is as easy as inserting three lines of PHP code. And did we mention the price? Absolutely Free.

WEBalbum
Web Server: N/A
Programming Language: PHP
Database: MySQL
License: Free
Description: WEBalbum is a virtual photo's album on your web site. WEBalbum makes possible a simple way to share photos on the internet.
Now you can very simply place your photos on your web site. Only need is a few mouse clicks to add one photo or many photos. You will determine who will have a right to view photos and which category will have access. Every user who visits your site can rate photos, add comments, add own photos or add new photo category. All depend on you and what you added privileges for user.

zenphoto
Web Server: N/A
Programming Language: PHP
Database: MySQL
License: Free
Description: Zenphoto is an answer to lots of calls for an online gallery solution that just makes sense. After years of bloated software that does everything and your dishes, zenphoto just shows your photos, simply. It's got all the functionality and "features" you need, and nothing you don't. Where the old guys put in a bunch of modules and junk, we put a lot of thought. We hope you agree with our philosopy: simpler is better.

See more post about CMS

Forum (CMS Reviews)

2011-05-23T20:37:00.000-07:00

Now I'll give a little information about the CMS Forum as I know, and certainly still a lot that I do not know, for more details can be found on google. :-)

K4 Bulletin Board
Web Server: N/A
Programming Language: PHP
Database: MySQL, SQLite, PostgreSQL
License: MIT/X Consortium License
Description: k4 Bulletin Board is a full featured open-source (free) bulletin board solution. Having hundreds of features while still in beta, it compares to its expensive counterparts. Its standard features include: AJAX integration, advanced searching, unlimited categories and forums, unlimited topics and replies, multilingual support, fully templateable and a dedicated community. It runs on PHP4/PHP5 and currently works with MySQL, MySQLi and SQLite and is in testing with PostgreSQL.

JForum
Web Server: Tomcat, Resin, JBoss
Programming Language: Java
Database: MySQL, PostgreSQL, Oracle, HSQLDB, SQL Server
License: Free BSD
Description: JForum is a powerful and robust discussion board system implemented in Javatm. It provides an attractive interface, an efficient forum engine, an easy to use administrative panel, an advanced permission control system and much more.
Built from the ground up around a MVC framework, it can be deployed on any servlet container or Application Server, such as Tomcat, Resin and JBoss. Its clean design and implementation make JForum easy to customize and extend.
Best of all, JForum is freely available under the BSD Open Source license.

miniBB
Web Server: Apache
Programming Language: PHP
Database: MySQL, PostgreSQL
License: GNU General Public License (GPL)
Description: Want to make your own discussion board? miniBB ( = mini bulletin board) is a free forum software, original PHP message board script, you can build online community on. Security, speed and stability - three S's of our conferencing software concepts.
Based on original technology, miniBB provides everything to make your web discussions fast, simple and attractive for visitors. First of all, it's a content- and support-oriented board.

MyBB
Web Server: N/A
Programming Language: PHP
Database: MySQL
License: Other Free / Open Source License
Description: MyBB is a powerful, efficient and free forum package developed in PHP and MySQL. MyBB has been designed with the end users in mind, you and your subscribers. Full control over your discussion system is presented right at the tip of your fingers, from multiple styles and themes to the ultimate customisation of your forums using the template system.

Phorum
Web Server: N/A
Programming Language: PHP
Database: MySQL
License: Free / Phorum License
Description: Phorum is a little different from the other web based message boards out there. It was designed to meet different needs of different web sites while not sacrificing performance or features.
The group of developers of Phorum had very different needs. Some needed software that could run a single forum with over 2,000 new posts per day. Others hosted over 4,000 forums on one server. The end result is a versatile product that can serve anyone's needs.

phpBB
Web Server: N/A
Programming Language: PHP
Database: MySQL, MS-SQL, PostgreSQL, Access/ODBC
License: GNU General Public License (GPL)
Description: phpBB is a high powered, fully scalable, and highly customizable Open Source bulletin board package. phpBB has a user-friendly interface, simple and straightforward administration panel, and helpful FAQ. Based on the powerful PHP server language and your choice of MySQL, MS-SQL, PostgreSQL or Access/ODBC database servers, phpBB is the ideal free community solution for all web sites.

Vanilla
Web Server: Almost any server
Programming Language: PHP
Database: MySQL
License: GNU General Public License (GPL)
Description: Vanilla is an open-source, standards-compliant, multi-lingual, fully extensible discussion forum for the web. Anyone who has web-space that meets the requirements can download and use Vanilla for free!
In Vanilla you can quickly and easily see which discussions you haven't read, and how many new comments are in each discussion. You can run advanced searches through discussion topics, comments, and users. You can change the way Vanilla operates using per-user preferences. Finally, you have a very customizable account profile where you can provide pictures of yourself and add as much information about yourself as you like.

SMF - Simple Machines Forum
Web Server: Apache, ISS, all that support PHP
Programming Language: PHP
Database: MySQL
License: Simple Machines License (Free)
Description: Simple Machines Forum - SMF in short - is a free, professional grade software package that allows you to set up your own online community within minutes. Its powerful custom made template engine puts you in full control of the lay-out of your message board and with our unique SSI - or Server Side Includes - function you can let your forum and your website interact with each other. SMF is written in the popular language PHP and uses a MySQL database. It is designed to provide you with all the features you need from a bulletin board while having an absolute minimal impact on the resources of the server. SMF is the next generation of forum software, and best of all it is and will always remain completely free!

vBulletin
Web Server: N/A
Programming Language: PHP
Database: MySQL
License: Commercial
Description: vBulletin is a powerful, scalable and fully customizable forums package for your web site. It has been written using the Web's quickest-growing scripting language; PHP, and is complemented with a highly efficient and ultra fast back-end database engine built using MySQL.
vBulletin is the ideal community solution for all medium-to-large sites.

Yazd
Web Server: Apache with Tomcat, JRun, IBM Websphere, Weblogic, iPlanet, Resin, Enhydra
Programming Language: Java, JSP
Database: Oracle, MySQL, DB2, Microsoft SQLServer, Sybase, Interbase, Hypersonic SQL, Pointbase, Informix, Postgres
License: Apache License (Free)
Description: Yazd is an open-source (Apache License) discussion forum software that you can download customize and use. Yazd is a Java based forum software that can easily be configured through an admin interface. This discussion forum software is highly flexible and uses JDBC to connect to a backend database.
Yazd discussion forum software is absolutely free and open-source. Please consider finanical support for the project, this is very important to the success of it. You can also help the project by purchasing support. The least you could do is visit one of our sponsors. And we thank you for considering Yazd Discussion Forum software.
See more post about CMS

Blog (CMS Reviews)

2011-05-23T20:11:00.000-07:00

Continuing my previous post, now I will share a little information about the CMS Blogs are usually often used, and of course there are many CMS that I did not know, for more details we can find on google.

DotClear
Web Server: N/A
Programming Language: PHP
Database: MySQL
License: GNU General Public License (GPL)
Description: DotClear was design only for weblogs management, and do it well. It is completely free! DotClear is a free software distributed under the GNU General Public License.

LifeType
Web Server: N/A
Programming Language: PHP
Database: MySQL
License: GNU General Public License (GPL)
Description: The goal of the LifeType project is to create a stable multi-user and multi-blogging platform, to strengthen the concept of communities around blogs.
LifeType supports multiple blogs and users, media management, generation of standard content, clean URLs and support for subdomains. LifeType is released under the GPL license, and requires PHP and MySQL to work.
Writing articles is comfortable with the included state of the art WYSIWYG editor. Adding pictures and sound files (for Podcasting) is just a matter of browse and click. The Dashboard provides you with all the information you need every time you log in. Recent articles, comments and trackback as well as brief statistics get you updated about your blog immediately.

Loudblog
Web Server: N/A
Programming Language: PHP
Database: MySQL
License: GNU General Public License (GPL)
Description: Loudblog is a sleek and easy-to-use Content Management System (CMS) for publishing media content on the web. It automatically generates a skinnable website and an RSS-Feed for Podcasting. Just upload your audio/video files, add some notes and links, and you’re done!
Loudblog is not a fully featured weblog system like Textpattern or Movable Type, although it does offer the basic weblog functionality. Use Loudblog if you’re publishing media data on a regular base and do not need sophisticated features other systems may provide much better.

Pixelpost
Web Server: Apache or ISS
Programming Language: PHP
Database: MySQL
License: N/A
Description: Pixelpost is a photoblog application powered by PHP and MySQL. It's developed and maintained by photobloggers who like to keep the meaning behind photoblogging in mind, the photography, and not about the 311 hacks you would have to get through to get your regular blog to work.

Serendipity
Web Server: Apache, ISS or Lighttpd
Programming Language: PHP
Database: MySQL
License: BSD
Description: Serendipity is a PHP-powered weblog application which gives the user an easy way to maintain an online diary, weblog or even a complete homepage. While the default package is designed for the casual blogger, Serendipity offers a flexible, expandable and easy-to-use framework with the power for professional applications.
Casual users appreciate the way Serendipity's sophisticated plugin architecture allows you to easily modify both the appearance of your blog and its features. You can install more than120 plugins with just one click, instantly enhancing your blog's functionality. No need to edit code!
Likewise, one click installs any of more than 40 official templates, so your blog looks the way you like it. And Serendipity's SPARTACUS plugin automatically checks the central repository for upgrades and new functionality whenever you check the list.

Wheatblog
Web Server: Apache
Programming Language: PHP
Database: MySQL, SQLite
License: GNU General Public License (GPL)
Description: Wheatblog is blogware: it's a web-based content management system for maintaining online blogs, journals, news pages, and about anything else you can think of writing down. It allows reader interaction with a comment system, and generates valid RSS 2.0 feeds. It is powered by PHP and is compatible with the MySQL and SQLite database systems.

WordPress
Web Server: Apache recommended
Programming Language: PHP
Database: MySQL
License: GNU General Public License (GPL)
Description: WordPress is publishing software with a focus on ease of use, speed and a great user experience. WordPress is blessed with an active community, which is the heart of open source software.
WordPress is a powerful personal publishing platform, and it comes with a great set of features designed to make your experience as a publisher on the Internet as easy, pleasant and appealing as possible. We are proud to offer you a freely distributed, standards-compliant, fast, light and free personal publishing platform, with sensible default settings and features, and an extremely customizable core.

Joomla
Description: Joomla! is one of the most powerful Open Source Content Management Systems on the planet. It is used all over the world for everything from simple websites to complex corporate applications. Joomla! is easy to install, simple to manage, and reliable.

DrupalDescription: Drupal is software that allows an individual or a community of users to easily publish, manage and organize a great variety of content on a website. Tens of thousands of people and organizations have used Drupal to set up scores of different kinds of web sites.

E-Commerce (CMS)

2011-05-23T19:46:00.000-07:00

Continuing my previous writings about elearning cms and cms eCommerce, nowadays
now I will share my little knowledge about the various cms e-commers are often used,

CubeCart
Web Server: N/A
Programming Language: PHP
Database: MySQL
License: Free and Commercial
Description: CubeCart is an eCommerce script written with PHP & MySQL. With CubeCart you can setup a powerful online store as long as you have hosting supporting PHP and one MySQL database.
To edit or remove our copyright we charge $89.95 $69.95 per domain* and you will be issued with a License Key.
CubeCart can be used at no cost if this information is NOT modified or removed. Please read our License Agreement which applies to both version 2 and 3 for futher information. CubeCart is not open source software and may not be redistributed.

osc2nuke
Web Server: N/A
Programming Language: PHP
Database: MySQL
License: GNU General Public License (GPL)
Description: Osc2nuke is the combination btw phpnuke (generaly the last version available) and oscommerce ms 2.2 (the time they finish the developement of ms 2.3), so it is a phpnuke site in which we have fully integrate the oscommerce shopping cart.

osCommerce
Web Server: Any server that supports PHP
Programming Language: PHP
Database: MySQL
License: GNU General Public License (GPL)
Description: osCommerce is an Open Source based online shop e-commerce solution that is available for free under the GNU General Public License. It features a rich set of out-of-the-box online shopping cart functionality that allows store owners to setup, run, and maintain their online stores with minimum effort and with no costs, fees, or limitations involved.
osCommerce has attracted the largest community for an e-commerce solution that consists of over 106,800 store owners and developers worldwide with add-ons being contributed on a daily basis. To date there are over 3,500 add-ons available that have been created by the community to extend the features of an osCommerce online store.

phpShop
Web Server: N/A
Programming Language: PHP
Database: MySQL
License: GNU General Public License (GPL)
Description: phpShop is a PHP-powered shopping cart application. It is released under the GNU General Public License. The primary purpose of phpShop is to provide a simple shopping cart solution that is easy to customize to suit any purpose. phpShop has less features that many other shopping cart applications, but is generally easier to customize. All that is required to effectively customize phpShop is a basic knowledge of HTML, PHP, and SQL.

Zen Cart
Web Server: Apache
Programming Language: PHP
Database: MySQL
License: GNU General Public License (GPL)
Description: Zen Cart™ truly is the art of e-commerce; a free, user-friendly, open source shopping cart system. The software is being developed by group of like-minded shop owners, programmers, designers, and consultants that think e-commerce could be and should be done differently. Some "solutions" seem to be complicated programming exercises instead of responding to users' needs, Zen Cart™ puts the merchants and shoppers requirements first. Similarly, other programs are nearly impossible to install and use without an IT degree, Zen Cart™ can be installed and set-up by anyone with the most basic web site building and computer skills.

LCMS (Learning Content Management System)

2011-05-23T19:28:00.000-07:00

I get an assignment from my lecturer to create cms reviews, I get the e-learning cms (LCMS) and also cms e-commers, ok, now I'll share a little information about the cms elearning and cms e-commers as I know..

ATutor
Web Server: Apache recommended
Programming Language: PHP
Database: MySQL
License: GNU General Public License (GPL)
Description: ATutor is an Open Source Web-based Learning Content Management System (LCMS) designed with accessibility and adaptability in mind. Administrators can install or update ATutor in minutes, develop custom templates to give ATutor a new look, and easily extend its functionality with feature modules. Educators can quickly assemble, package, and redistribute Web-based instructional content, easily retrieve and import prepackaged content, and conduct their courses online. Students learn in an adaptive learning environment.

Claroline
Web Server: Apache or Microsoft IIS
Programming Language: PHP
Database: MySQL
License: GNU General Public License (GPL)
Description: Claroline is a free application based on PHP/MySQL allowing teachers or education organizations to create and administrate courses through the web.
Developed from teachers to teachers, Claroline is built over sound pedagogical principles allowing a large variety of pedagogical setup including widening of traditional classroom and online collaborative learning.
Claroline is translated in 32 languages and used by hundreds of institutions around the world. The software is released under Open Source licence (GPL). Downloading and using Claroline is completely free of charge.

doceboLMS
Web Server: N/A
Programming Language: PHP
Database: MySQL
License: GNU General Public License (GPL)
Description: Docebo is an open source e-learning suite that contains an LMS (for online courses), and a CMS (for web portal building). Scorm support.

Dokeos
Web Server: Apache recommended
Programming Language: PHP, Javascript, XML, XHTML 1.1
Database: MySQL
License: GNU General Public License (GPL)
Description: Dokeos is an Open Source elearning and course management web application translated in 34 languages and helping more than 1.000 organisations worldwide to manage learning and collaboration activities.
Dokeos is also a company helping these organisations launch and develop blended learning programmes.

Moodle
Web Server: Apache or any srverthat runs PHP
Programming Language: PHP
Database: MySQL, PostGRE and many others
License: GNU General Public License (GPL)
Description: Moodle is a course management system (CMS) - a free, Open Source software package designed using sound pedagogical principles, to help educators create effective online learning communities. You can download and use it on any computer you have handy (including webhosts), yet it can scale from a single-teacher site to a 50,000-student University.

Site@School
Web Server: Apache
Programming Language: PHP
Database: MySQL
License: GNU General Public License (GPL)
Description: Site@School is an extreme powerful and mature CMS. It has many features and it's additional modules make it to a CMS that's unique for primary schools.
Site@School comes with a comrehensive manual, illustrated with over 300 screenshots, describing every operation in detail. For every release the manual is completely updated.

if-else JavaScript

2011-05-08T21:37:00.000-07:00

Conditional on JavaScript Write this code then save with html extension. open with your browser.

<HTML>
<HEAD>
<TITLE> Contoh if-else </TITLE>
</HEAD>
<BODY>
<SCRIPT LANGUAGE = "JavaScript">
var nilai = prompt("Nilai (0-100): ", 0);
var hasil = "";
   if (nilai >= 60)
     hasil = "Lulus";
      else
     hasil = "Tidak Lulus";
   document.write("Hasil: " + hasil);
</SCRIPT></BODY>
</HTML>

Output...

JavaScript Arithmetic

2011-05-08T21:27:00.000-07:00

Write this code then save with html extension. open with your browser.

<HTML>
<HEAD>
<TITLE>Contoh Program Javascript</TITLE>
</HEAD>
<SCRIPT language="Javascript">
function test (val1,val2)
{
document.write(". Perkalian : val1*val2 = ")
document.write(val1*val2)

document.write(". Pembagian : val1/val2 = ")
document.write(val1/val2)
document.write(". Penjumlahan : val1+val2 = ")
document.write(val1+val2)
document.write(". Pengurangan : val1-val2 = ")
document.write(val1-val2)
document.write(". Modulus : val1%val2 = ")
document.write(val1%val2)
}
</SCRIPT>
<BODY>
<input type="button" name="button1" value="arithmetic"
onclick=test(9,4)>
</BODY>
</HTML>

Output...

Javascript Prompt Box

2011-05-08T21:14:00.000-07:00

Using Prompt Box (JavaScript) for Input data Write this code then save with html extension. open with your browser.

<HTML>
<HEAD>
<TITLE>Prompt BOX JavaScript</TITLE>
</HEAD>
<BODY>
<SCRIPT LANGUAGE = "JavaScript">
    var name = prompt("What's Your Name ?","your name"); 
    document.write("Hai, " + name);
</SCRIPT>
</BODY>
</HTML>

Output...

Javascript Alert Box

2011-05-08T20:59:00.000-07:00

Using Alert Box (JavaScript) Write this code then save with html extension. open with your browser.

<HTML>
<HEAD>
<TITLE>Alert Box</TITLE>
</HEAD>

<BODY>
    <SCRIPT LANGUAGE = "JavaScript">
        window.alert("Your Massage");
    </SCRIPT>
</BODY>
</HTML>

Output...

Introduction to JavaScript

2011-05-08T20:32:00.000-07:00

JavaScript is an easy-to-learn programming language which can be built into Web pages, so that it executes from within the browser rather than on the web server. Intranets especially can leverage the power of JavaScript to create "smart" Web pages which can process data and interact with the user. In this introduction we concisely look at the main programming points of the JavaScript language. By Aaron Weiss

the good reference about javascript you can read on http://www.intranetjournal.com/articles/200002/javatut_index.html

indocOding.com

Matrix Strassen on Java

Comparison operator in Java / Operator Perbandingan Java

Complement & Conditional(Ternary) in Java

Increment & Decrement Java

and, or, xor on Java Programming

Bitwise Operator java

Aritmaitika Java II / Java Arithmatic II

Conversion and Casts in java

Java Type Of Data II / Tipe Data Java II

Java Type Of Data I / Tipe Data Java I

Aritmaitika Java / Java Arithmatic

Tipe Data Java

Kode

Nama

Unicode

Reason Using Java ( Kenapa harus Java? )

Remastering Linux

Convert Binary into Decimal with Java

Gallery (CMS Reviews)

Forum (CMS Reviews)

Blog (CMS Reviews)

E-Commerce (CMS)

LCMS (Learning Content Management System)

if-else JavaScript

JavaScript Arithmetic

Javascript Prompt Box

Javascript Alert Box

Introduction to JavaScript