SVS-tutorial

C TUTORIAL E-Book

noreply@blogger.com (Anonymous) — Fri, 21 Nov 2014 01:29:00 -0800

C TUTORIAL E-Book

I would like to express my special thanks of gratitude to my teacher Mrs.Anita mam who gave me the golden opportunity to do this wonderful job to write E-book on C which also helped me in doing a lot of Research and i came to know about so many new things. I am really thankful to them.

Secondly i would also like to thank my parents and friends subhash ,Vivesh who helped me a lot in finishing this project within the limited time.

I am making this e-book not only for marks but to also increase my knowledge .

THANKS AGAIN TO ALL WHO HELPED ME.

you can follow me on Sunil Saini

You can Download E-book from here :-
C.pdf

For latest updates follow us on:-

Facebook / Twitter

Subhash

C PROGRAM

noreply@blogger.com (Anonymous) — Fri, 21 Nov 2014 01:14:00 -0800

C PROGRAMMING

C is a general-purpose programming language with features economy of expression, modern
flow control and data structures, and a rich set of operators. C is not a ``very high level''
language, nor a ``big'' one, and is not specialized to any particular area of application. But its
absence of restrictions and its generality make it more convenient and effective for many tasks
than supposedly more powerful languages.

Sunil Saini

Some Important pogramms In C

You can download it from the given link :- C programming

WE are happy to help you....!!!

YOU CAN FOLLOW US ON FACEBOOK Twitter

Visual Basic

noreply@blogger.com (Anonymous) — Tue, 18 Nov 2014 00:13:00 -0800

Visual Basic

Introduction to Visual Basic

    Visual Basic is a programming language and development environment created by Microsoft.

    Visual Basic provides a graphical user interface GUI that allows the developer drag and drop objects into the program as well as manually write program code.

    Visual Basic, also referred to as "VB," is designed to make software development easy and efficient

Visual Basic 6.0

—1. Visual Basic is a programming language and integrated development environment.

—2. It derives from the much older BASIC programming language, and so is considered useful and easy programming language for the beginner to learn.
—3. Visual Basic 6.0 was the final edition of Visual Basic.

Feature Of visual basic 6.0
1. Learning Consists of all necessary tools required to build main stream Windows Applications
2. Professional Includes advanced features such as tools to develop ActiveX and Internet controls.
3. Enterprise In addition to all Professional features, it also includes tools such as Visual

Features of visual basic
GUI Interface

Modularization

Object Oriented

Debugging

Macros IDE

Data access feature

Guo Interface: - VB is a Graphical User Interface language. This means that a VB program will always show something on the screen that the user can interact with to get a job done.

Modularization: - It is considered good programming practice to modularize your programs. Small modules where it is clearly indicated what comes into the module and what goes out makes a program easy to understand.

Object Oriented: - Object Oriented Programming is a concept where the programmer thinks of the program in "objects" that interact with each other. Visual Basic forces this good programming practice.

Debugging: - Visual Basic offers two different options for code debugging:- Debugging Managed Code Runtime Debugger The Debugging Managed Code individually debugs C and C++ applications and Visual Basic Windows applications. The Runtime Debugger helps to find and fix bugs in programs at runtime.

Data Access Feature: - By using data access features, we can create databases, scalable server-side components for most databases, including Microsoft SQL Server and other enterprise-level database.

Macros IDE: - The Macros integrated development environment is similar in design and function to the Visual Studio IDE. The Macros IDE includes a code editor, tool windows, the properties windows and editors.

List of Some Solved Example :-

click here:

Visual basics

Vivesh Tyagi

for latest updates YOU can follow us on :- Facebook Twitter

Remove Windows.old folder in Windows 8 / 7

noreply@blogger.com (Anonymous) — Mon, 17 Nov 2014 02:37:00 -0800

Remove Windows.old folder in Windows 8 / 7

First you will need to take ownership of this folder, so at the command prompt, type

takeown /F C:\Windows.old\* /R /A

and hit Enter.
Next, in the command prompt, type

cacls C:\Windows.old\*.* /T /grant administrators:F

and hit Enter. When you run this command, administrators are granted full rights to all files and to all folders.
Finally, type

rmdir /S /Q C:\Windows.old\

and hit Enter. This will delete the windows.old folder.

COMPUTER NETWORKING

noreply@blogger.com (Anonymous) — Mon, 17 Nov 2014 02:32:00 -0800

COMPUTER NETWORKING

I would like to express my special thanks of gratitude to my teacher Ravinder Swami sir who gave me the golden opportunity to do this wonderful job to write E-book on Computer Networking which also helped me in doing a lot of Research and i came to know about so many new things. I am really thankful to them.

Secondly i would also like to thank my parents and friends who helped me a lot in finishing this project within the limited time.

I am making this e-book not only for marks but to also increase my knowledge .

THANKS AGAIN TO ALL WHO HELPED ME.

you can follow me on vivesh

You can Download E-book from here :-

ComputerNetworking.pdf

ComputerNetworking.ppt

Networks&Types.ppt

password for ppt:-vivs

Vivesh Tyagi

JAVA E-Book

noreply@blogger.com (Anonymous) — Mon, 17 Nov 2014 01:44:00 -0800

JAVA TUTORIAL E-Book

I would like to express my special thanks of gratitude to my teacher Maninder Singh Bhui , Ashish , Yogender sir who gave me the golden opportunity to do this wonderful job to write E-book on JAVA which also helped me in doing a lot of Research and i came to know about so many new things. I am really thankful to them.

Secondly i would also like to thank my parents and friends subhash ,sunil who helped me a lot in finishing this project within the limited time.

I am making this e-book not only for marks but to also increase my knowledge .

THANKS AGAIN TO ALL WHO HELPED ME.

you can follow me on Vivesh Tyagi

You can Download E-book from here :-

java.pdf

java.ppt

password for ppt:- vivs

Vivesh Tyagi

Learn Java in easy way

noreply@blogger.com (Anonymous) — Wed, 12 Nov 2014 22:54:00 -0800

Beginning Java

What is java

Java is a set of several computer software and specifications developed by SunMicrosystems, later acquired by Oracle Corporation, that provides a system for developing application software and deploying it in a cross-platform Computing environment. Java is used in a wide variety of computing Platforms from embedded devices and Mobile Phones to enterprise Servers and supercomputers. While less common, JAVA APPLETS run in secure, sand-boxed environments to provide many features of native applications and can be embedded in HTML pages.

Writing in the Java Programming Language is the primary way to produce code that will be deployed as byte code in a Java Virtual Machine(JVM) byte code compilers are also available for other languages, including Ada, JavaScript,Python ,and Ruby. In addition, several languages have been designed to run natively on the JVM, including Scala, Clojure and Groovy.Java syntax borrows heavily from C and C++ but object-oriented features are modeled after Smalltalk and Objective-c Java eschews certain low-level constructs such as pointers and has a very simple memory model where every object is allocated on the heap and all variables of object types are references. Memory management is handled through integrated automatic garbage collection performed by the JVM.

On November 13, 2006, Sun Micro systems made the bulk of its implementation of Java available under the GNU General Public License (GPL).

Introduction to Java

First of all download JDK(Java Development Kit) on your computer, Clcik Here to download JDK and instal JDK on your computer

After installation click on start menu after that click on run and type cmd and press enter, Now open the folder where your java programs saved. For example suppose my programs are saved in java folder in c, Now type on command prompt : -

cd java and press enter, Now you will automatically enter the java folder on c drive, After that you have to give the path where your JDk is installed after this you are ready to make and execute your program in java

Java Programms

Some Important pogramms In Java

You can download it from the given link download here

WE are happy to help you....!!!

ASCII

noreply@blogger.com (Anonymous) — Mon, 10 Nov 2014 23:34:00 -0800

ASCII CODING

Standard ASCII set, HTML Entity names, ISO 10646, ISO 8879, ISO 8859-1 Latin alphabet No. 1
Browser support: All browsers

ASCII			HTML	HTML
Dec	Hex	Symbol	Number	Name

32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47	20 21 22 23 24 25 26 27 28 29 2A 2B 2C 2D 2E 2F	! " # $ % & ' ( ) * + , - . /	! " # $ % & ' ( ) * + , - . /	" &	space exclamation point double quotes number sign dollar sign percent sign ampersand single quote opening parenthesis closing parenthesis asterisk plus sign comma minus sign - hyphen period slash

ASCII			HTML	HTML
Dec	Hex	Symbol	Number	Name

48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63	30 31 32 33 34 35 36 37 38 39 3A 3B 3C 3D 3E 3F	0 1 2 3 4 5 6 7 8 9 : ; < = > ?	0 1 2 3 4 5 6 7 8 9 : ; < = > ?	< >	zero one two three four five six seven eight nine colon semicolon less than sign equal sign greater than sign question mark

ASCII			HTML	HTML
Dec	Hex	Symbol	Number	Name

64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79	40 41 42 43 44 45 46 47 48 49 4A 4B 4C 4D 4E 4F	@ A B C D E F G H I J K L M N O	@ A B C D E F G H I J K L M N O		at symbol

ASCII			HTML	HTML
Dec	Hex	Symbol	Number	Name

80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95	50 51 52 53 54 55 56 57 58 59 5A 5B 5C 5D 5E 5F	P Q R S T U V W X Y Z [ \ ] ^ _	P Q R S T U V W X Y Z [ \ ] ^ _		opening bracket backslash closing bracket caret - circumflex underscore

ASCII			HTML	HTML
Dec	Hex	Symbol	Number	Name

96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111	60 61 62 63 64 65 66 67 68 69 6A 6B 6C 6D 6E 6F	` a b c d e f g h i j k l m n o	` a b c d e f g h i j k l m n o		grave accent

ASCII			HTML	HTML
Dec	Hex	Symbol	Number	Name

112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127	70 71 72 73 74 75 76 77 78 79 7A 7B 7C 7D 7E 7F	p q r s t u v w x y z { \| } ~	p q r s t u v w x y z { \| } ~		opening brace vertical bar closing brace equivalency sign - tilde (not defined in HTML 4 standard)

ASCII			HTML	HTML
Dec	Hex	Symbol	Number	Name

128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143	80 81 82 83 84 85 86 87 88 89 8A 8B 8C 8D 8E 8F				(not defined in HTML 4 standard) (not defined in HTML 4 standard) (not defined in HTML 4 standard) (not defined in HTML 4 standard) (not defined in HTML 4 standard) (not defined in HTML 4 standard) (not defined in HTML 4 standard) (not defined in HTML 4 standard) (not defined in HTML 4 standard) (not defined in HTML 4 standard) (not defined in HTML 4 standard) (not defined in HTML 4 standard) (not defined in HTML 4 standard) (not defined in HTML 4 standard) (not defined in HTML 4 standard) (not defined in HTML 4 standard)

ASCII			HTML	HTML
Dec	Hex	Symbol	Number	Name

144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159	90 91 92 93 94 95 96 97 98 99 9A 9B 9C 9D 9E 9F				(not defined in HTML 4 standard) (not defined in HTML 4 standard) (not defined in HTML 4 standard) (not defined in HTML 4 standard) (not defined in HTML 4 standard) (not defined in HTML 4 standard) (not defined in HTML 4 standard) (not defined in HTML 4 standard) (not defined in HTML 4 standard) (not defined in HTML 4 standard) (not defined in HTML 4 standard) (not defined in HTML 4 standard) (not defined in HTML 4 standard) (not defined in HTML 4 standard) (not defined in HTML 4 standard) (not defined in HTML 4 standard)

ASCII			HTML	HTML
Dec	Hex	Symbol	Number	Name

160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175	A0 A1 A2 A3 A4 A5 A6 A7 A8 A9 AA AB AC AD AE AF	¡ ¢ £ ¤ ¥ ¦ § ¨ © ª « ¬ ® ¯	¡ ¢ £ ¤ ¥ ¦ § ¨ © ª « ¬ ® ¯	¡ ¢ £ ¤ ¥ ¦ § ¨ © ª « ¬ ® ¯	non-breaking space inverted exclamation mark cent sign pound sign currency sign yen sign broken vertical bar section sign spacing diaeresis - umlaut copyright sign feminine ordinal indicator left double angle quotes not sign soft hyphen registered trade mark sign spacing macron - overline

ASCII			HTML	HTML
Dec	Hex	Symbol	Number	Name

176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191	B0 B1 B2 B3 B4 B5 B6 B7 B8 B9 BA BB BC BD BE BF	° ± ² ³ ´ µ ¶ · ¸ ¹ º » ¼ ½ ¾ ¿	° ± ² ³ ´ µ ¶ · ¸ ¹ º » ¼ ½ ¾ ¿	° ± ² ³ ´ µ ¶ · ¸ ¹ º » ¼ ½ ¾ ¿	degree sign plus-or-minus sign superscript two - squared superscript three - cubed acute accent - spacing acute micro sign pilcrow sign - paragraph sign middle dot - Georgian comma spacing cedilla superscript one masculine ordinal indicator right double angle quotes fraction one quarter fraction one half fraction three quarters inverted question mark

ASCII			HTML	HTML
Dec	Hex	Symbol	Number	Name

192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207	C0 C1 C2 C3 C4 C5 C6 C7 C8 C9 CA CB CC CD CE CF	À Á Â Ã Ä Å Æ Ç È É Ê Ë Ì Í Î Ï	À Á Â Ã Ä Å Æ Ç È É Ê Ë Ì Í Î Ï	À Á Â Ã Ä Å Æ Ç È É Ê Ë Ì Í Î Ï	latin capital letter A with grave latin capital letter A with acute latin capital letter A with circumflex latin capital letter A with tilde latin capital letter A with diaeresis latin capital letter A with ring above latin capital letter AE latin capital letter C with cedilla latin capital letter E with grave latin capital letter E with acute latin capital letter E with circumflex latin capital letter E with diaeresis latin capital letter I with grave latin capital letter I with acute latin capital letter I with circumflex latin capital letter I with diaeresis

ASCII			HTML	HTML
Dec	Hex	Symbol	Number	Name

208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223	D0 D1 D2 D3 D4 D5 D6 D7 D8 D9 DA DB DC DD DE DF	Ð Ñ Ò Ó Ô Õ Ö × Ø Ù Ú Û Ü Ý Þ ß	Ð Ñ Ò Ó Ô Õ Ö × Ø Ù Ú Û Ü Ý Þ ß	Ð Ñ Ò Ó Ô Õ Ö × Ø Ù Ú Û Ü Ý Þ ß	latin capital letter ETH latin capital letter N with tilde latin capital letter O with grave latin capital letter O with acute latin capital letter O with circumflex latin capital letter O with tilde latin capital letter O with diaeresis multiplication sign latin capital letter O with slash latin capital letter U with grave latin capital letter U with acute latin capital letter U with circumflex latin capital letter U with diaeresis latin capital letter Y with acute latin capital letter THORN latin small letter sharp s - ess-zed

ASCII			HTML	HTML
Dec	Hex	Symbol	Number	Name

224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239	E0 E1 E2 E3 E4 E5 E6 E7 E8 E9 EA EB EC ED EE EF	à á â ã ä å æ ç è é ê ë ì í î ï	à á â ã ä å æ ç è é ê ë ì í î ï	à á â ã ä å æ ç è é ê ë ì í î ï	latin small letter a with grave latin small letter a with acute latin small letter a with circumflex latin small letter a with tilde latin small letter a with diaeresis latin small letter a with ring above latin small letter ae latin small letter c with cedilla latin small letter e with grave latin small letter e with acute latin small letter e with circumflex latin small letter e with diaeresis latin small letter i with grave latin small letter i with acute latin small letter i with circumflex latin small letter i with diaeresis

ASCII			HTML	HTML
Dec	Hex	Symbol	Number	Name

240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255	F0 F1 F2 F3 F4 F5 F6 F7 F8 F9 FA FB FC FD FE FF	ð ñ ò ó ô õ ö ÷ ø ù ú û ü ý þ ÿ	ð ñ ò ó ô õ ö ÷ ø ù ú û ü ý þ ÿ	ð ñ ò ó ô õ ö ÷ ø ù ú û ü ý þ ÿ	latin small letter eth latin small letter n with tilde latin small letter o with grave latin small letter o with acute latin small letter o with circumflex latin small letter o with tilde latin small letter o with diaeresis division sign latin small letter o with slash latin small letter u with grave latin small letter u with acute latin small letter u with circumflex latin small letter u with diaeresis latin small letter y with acute latin small letter thorn latin small letter y with diaeresis

HTML 4.01, ISO 10646, ISO 8879, Latin extended A and B,
Browser support: Internet Explorer > 4, Netscape > 4

			HTML	HTML
Dec	Hex	Symbol	Number	Name

338 339 352 353 376 402	152 153 160 161 178 192	Œ œ Š š Ÿ ƒ	Œ œ Š š Ÿ ƒ		latin capital letter OE latin small letter oe latin capital letter S with caron latin small letter s with caron latin capital letter Y with diaeresis latin small f with hook - function

			HTML	HTML
Dec	Hex	Symbol	Number	Name

8211 8212 8216 8217 8218 8220 8221 8222 8224 8225 8226 8230 8240 8364 8482	2013 2014 2018 2019 201A 201C 201D 201E 2020 2021 2022 2026 2030 20AC 2122	– — ‘ ’ ‚ “ ” „ † ‡ • … ‰ € ™	– — ‘ ’ ‚ “ ” „ † ‡ • … ‰ € ™	€	en dash em dash left single quotation mark right single quotation mark single low-9 quotation mark left double quotation mark right double quotation mark double low-9 quotation mark dagger double dagger bullet horizontal ellipsis per thousand sign euro sign trade mark sign

how c++ is different from c

noreply@blogger.com (Anonymous) — Sat, 8 Nov 2014 02:10:00 -0800

how C++ is more then C

C++ is derived from C Language. It is a Super set of C.

Earlier C++ was known as C with classes.
In C++, the major change was the addition of classes and a mechanism for inheriting class objects into other classes.
Most C Programs can be compiled in C++ compiler.
C++ expressions are the same as C expressions.
All C operators are valid in C++.

C	C++
1. C is Procedural Language.	1. C++ is non Procedural i.e Object oriented Language.
2. No virtual Functions are present in C	2. The concept of virtual Functions are used in C++.
3. In C, Polymorphism is not possible.	3. The concept of polymorphism is used in C++. Polymorphism is the most Important Feature of OOPS.
4. Operator overloading is not possible in C.	4. Operator overloading is one of the greatest Feature of C++.
5. Top down approach is used in Program Design.	5. Bottom up approach adopted in Program Design.
6. No namespace Feature is present in C Language.	6. Namespace Feature is present in C++ for avoiding Name collision.
7. Multiple Declaration of global variables are allowed.	7. Multiple Declaration of global varioables are not allowed.
8. In C scanf() Function used for Input. printf() Function used for output.	8. In C++ Cin>> Function used for Input. Cout<< Function used for output.
9. Mapping between Data and Function is difficult and complicated.	9. Mapping between Data and Function can be used using "Objects"
10. In C, we can call main() Function through other Functions	10. In C++, we cannot call main() Function through other functions.
11. C requires all the variables to be defined at the starting of a scope.	11. C++ allows the declaration of variable anywhere in the scope i.e at time of its First use.
12. No inheritance is possible in C.	12. Inheritance is possible in C++
13. In C, malloc() and calloc() Functions are used for Memory Allocation and free() function for memory Deallocating.	13.In C++, new and delete operators are used for Memory Allocating and Deallocating.
14. It supports built-in and primitive data types.	14. It support both built-in and user define data types.
15. In C, Exception Handling is not present.	15. In C++, Exception Handling is done with Try and Catch block.

Difference between Java and PHP !!!

noreply@blogger.com (Anonymous) — Fri, 7 Nov 2014 22:43:00 -0800

Difference between Java and PHP

Key difference: Java is a programming language, which has been influenced by the C language. It derives much of its syntax from C and C++, however it has fewer low-level facilities than either. Java is a general-purpose programming language that is designed to have fewer implementation dependencies as compared to previous languages. PHP, on the other hand, is a server-side scripting language that has its main implementation in web development. However, it can be used as a general-purpose programming language.

Java is a programming language, which has been influenced by the C language. It derives much of its syntax from C and C++, however it has fewer low-level facilities than either. Java is a general-purpose programming language that is designed to have fewer implementation dependencies as compared to previous languages. It is concurrent, class-based, and an object-oriented language.

Java was developed by James Gosling at Sun Microsystems and was released in 1995. It was originally released as a core component of Sun Microsystems' Java platform. Sun has since re-licensed most of its Java technologies under the GNU General Public License. This means that all the technology licensed under GNU General Public License is open source and generally available free of cost. Sun Microsystems eventually merged into Oracle Corporation.

Java is designed to allow the same code to run on various platforms. i.e., developers are allowed to “write once, run anywhere” (WORA). Hence, Java applications are typically compiled to bytecode. A class file which contains a Java bytecode can then be run on any Java Virtual Machine (JVM). This would be regardless of computer architecture.

As of 2012, Java has become one of the most popular programming languages for use. This is especially true for client-server web applications. Many other systems have developed alternative implementations of Sun technologies, such as GNU Compiler for Java and GNU Classpath.

PHP, on the other hand, is a server-side scripting language that has its main implementation in web development. However, it can be used as a general-purpose programming language. PHP was originally created by Rasmus Lerdorf in 1995 and it is currently managed by The PHP Group. PHP originally stood for Personal Home Page, however it was later renamed. It now stands for PHP: Hypertext Preprocessor, a recursive acronym. PHP is free software released under the PHP License, as is incompatible with the GNU General Public License (GPL) due to restrictions on the usage of the term PHP.

PHP is an open source, server-side, HTML embedded scripting language. It can basically perform any task that other CGI programs can, but it is mainly used to create dynamic Web pages. Its main advantage is that it is compatible with many types of databases. Furthermore, PHP can talk across networks using IMAP, SNMP, NNTP, POP3, or HTTP.

PHP includes a command-line interface capability and can be used in standalone graphical applications. PHP commands can be embedded directly into an HTML source document rather than calling an external file to process data. In the HTML document, the PHP script is enclosed within special PHP tags. Due to these tags, the programmer can alternate between HTML and PHP instead of having to rely on heavy amounts of code to output HTML. Also, as PHP is executed on the server, the client cannot view the PHP code.

Some differences between Java and PHP:

Every variable in Java needs to be prepended with a data type. This includes primitive types such as boolean, int, double and char, as well as Object data-types, such as ArrayList, String, and own objects.
In Java, every variable can only hold a value of its type.
In Java, equality on objects checks for object identity.
In Java, arrays are the classic C arrays. They can only hold variables of one particular type, and need to be created with a fixed length.
Java contains a series of collection Objects, one of which is named ArrayList. ArrayList will act more like PHP arrays.
In Java, one cannot get the array like syntax; all manipulation must be done through methods.
In Java, ArrayLists and other collections are implemented with generics.
Java has no pointers. However, all Objects are actually references, similar to PHP 5, and dissimilar to PHP 4.
All method parameters are passed by value in Java.
The main code entry point in Java is a method to a class, as opposed to PHP where it is not.
In Java, variable names do not usually start with a sigil ($).
Class names in Java are case sensitive.
Strings are not mutable in Java.
The Java Class library provides a mechanism to implement threads. PHP has no such mechanism.
PHP methods and functions allow for optional parameters. In Java, a separate method must be defined for each possible list of parameters.
PHP requires an explicit $this be used when an object calls its own methods. Java does not.
Java programs tend to be built from a "program runs, stays running, processes requests" kind of way, whereas PHP applications are built from a "run, handle the request, stop running" kind of way.
Java is compiled to bytecode, PHP is interpreted.
Java is strong and statically typed, while PHP is rather weakly and dynamically typed.
PHP is mostly used to dynamically generate Webpages. Java can do that too, as well as Applets, mobile phone software, Enterprise stuff, desktop application with and without GUI, 3d games, Google Web Toolkit, etc.
PHP offers OOP (object oriented programming) as an option that is ignored in most projects. In, Java, OOP is the default.
String constants in PHP are declared using single or double quotes. Double quotes will evaluate variables embedded in the text. All Java String constants use double quotes and have no such variable evaluation.
PHP object method calls use the -> operator. Java uses the . operator
Constructors in Java are named after the class name. In PHP they are called __construct()
Method overriding and overloading is quite natural in Java but a bit of a kludge in PHP
PHP code is embedded in what is otherwise largely an HTML document, much like how JSPs work
In PHP, there is no method overloading, but methods and functions can have optional parameters.

Difference between C, C++,JAVA !!!

noreply@blogger.com (Anonymous) — Fri, 7 Nov 2014 03:30:00 -0800

How Java Differs From C And C++

Although Java was modelled after C and C++ languages, it differs from C and C++ in many ways. Java does not incorportae a number of features available in C and C++. For the benefit of C and C++ programmers, we point out here a few major differences between C/C++ and Java language

How Java Differs From C:-
Java and C
Java is not lot like C but the major difference between Java and C is that Java is and object-oriented language and has mechanism to define classes and objects. In an effort to build a simple and safe language, the Java team did not include some of the C features in Java.

Java does not include the C unique statement keywords sizeof, and typedef.
Java does not contain the data type struct and union.
Java does not define the type modifiers keywords auto,extern,register,signed, and unsigned.
Java does not support an explicit pointer type.
Java does not have a preprocessor and therefore we cannot use # define, # include, and # ifdef statements.
Java requires that the functions with no arguments must be declared with empty parenthesis and not with the void keyword as done in C.
Java adds new operators such as instanceof and >>>>>.
Java adds labelled break and continue statements.
Java adds many features required for object-oriented programming.

How Java Differs From C++ :-
Java and C++
Java is a true object-oriented language while C++ is basically C with object-oriented extension. That is what exactly the increment operator ++ indicates. C++ has maintained backward compatibility with C. Is is therefore possible to write an old style C program and run it successfully under C++. Java appears to be similar to C++ when we consider only the “extensions” part of C++. However, some object -oriented features of C++ make the C++ code extremely difficult to follow and maintain.

Listed below are some major C++ features that were intentionally omitted from java or significantly modified.

Java does not support operator overloading.
Java does not have template classes as in C++.
Java does not support multiple inheritance of classes. This is accomplished using a new feature called “Interface”.
Java does not support global variables. Every variable and method is declared within classes and forms part of that class.
Java does not use pointers.
Java has replaced the destructor function with a finalize() function.
There are no header files in Java.

Java also adds some new features. While C++ is a superset of C, Java is neither a superset nor a subset of C or C++. Java may be considered as a first cousin of C++ and a second cousin of C

For more deep details about java, c and c++you can download our tutorials
WE ARE HAPPY TO HELP YOU !!!

5 ways how hackers attack you !!!

noreply@blogger.com (Anonymous) — Fri, 7 Nov 2014 03:14:00 -0800

5 ways how hackers attack you

Right now, millions of hackers, spammers and scammers are hard at work. They’re after your Social Security number, bank account information and social media accounts. With any of these, they can steal your money or trick your friends into giving up theirs.

1. Phishing scams
Lucky you! A Nigerian prince has selected you to help smuggle millions out of his country. For a little bit of effort — a few simple wire transfers — you’ll get a substantial cut. What could be easier?
I bet you’re asking yourself, “Who would fall for that?” Well, tens of thousands of people do every year. That’s why Nigerian scams, known as 419 scams, are still very popular.
Other versions might say you won a contest or have a job offer. Maybe someone wants to meet you, or you can make money for shipping some goods.
The catch is that you have to send in personal or banking information, or pay a fee. Of course, your information and money is going straight to hackers.
Use common sense before reacting to any e-mail. Scams rely on making you act quickly. If you think about things long enough, you can usually see through them. Just remember the old saying, “If it looks too good to be true … ”

2. Trojan horse
Many hackers want to slip a virus on your computer. Once installed, a virus can record everything you type and send it back to the hacker. It can send out spam e-mail or attack other computers.
To do this, the hackers disguise the virus as something harmless. This is called a Trojan horse, or just Trojan.
One of the most popular ways to deliver a Trojan is a variation of the phishing e-mail scams.
For example, the e-mail might say it’s from a shipping service, bank or other reputable company. There’s been a problem with a transaction! To learn more, you have to open an e-mail attachment.
The attachment might look like a normal file, but it really contains a Trojan. Clicking on the file installs it before you can do anything.
Similar scams appear on Facebook and Twitter. You think you’re going to watch a funny video your friend posted. Instead, a popup tells you to update your video player. The “update” file it provides is really a Trojan.
The key to defeat this tactic, as with phishing e-mails, is common sense. However, up-to-date security software is essential as well. It should detect and stop most Trojans before they can install.

3. Drive-by downloads
Security software is good, but it isn’t always enough. Programs on your computer might have weaknesses that hackers can use to bypass security software.

To take advantage of these weaknesses, hackers set up websites embedded with viruses. You might get there by clicking a malicious link in a phishing e-mail or on social media. You can even find these sites in a search for popular programs or topics.
It isn’t just malicious sites, though. Hackers can sneak malicious code on to legitimate websites. The code scans your computers for security holes. If it finds one, a virus can download and install without you doing anything.
To stay safe, you have to keep your programs up-to-date. Every month, Microsoft releases updates for Windows and Internet Explorer. These updates close critical security holes that hackers exploit.
Other critical programs to patch are Adobe’s Flash and Reader, and Oracle’s Java. Using old versions of these programs is like sending hackers an engraved invitation.
You should also be using the latest version of your programs. Anyone using Internet Explorer 6, 7 or 8 needs to update or switch browsers immediately.

4. Bypassing passwords
In Hollywood movies, hackers are masters of guessing account passwords. In the real world, however, very few hackers bother.
Instead, they go around passwords. They might get your password from a data breach at a company or website you use.
It’s important that you use a different password for every account. That way, if a hacker discovers one, they can’t get in to every account.
Perhaps the hacker slipped a virus on to your system. It records your passwords and sends them to the hacker; no guessing needed.
As I mentioned above, you can stop viruses with up-to-date security software and programs.
A hacker might tackle your account’s security question. Most security questions can be answered with information people post publicly.
You should change how you answer security questions. Give a random answer that has nothing to do with the question. That way, no one can guess it.

5. Using open Wi-Fi
I’m sure you have a Wi-Fi network at home. Is it encrypted? If you don’t know the answer, then it’s probably, “no.”
That means hackers, and neighbors, can connect to your network from outside. They can see and record everything you do. They can surf to bad websites and download illegal files on your connection. You might be getting a visit from the police.
You need to take a few minutes and secure your network. Trust me; it’s worth it. The instructions will be in your Wi-Fi router’s manual.

How to Check who used your PC in your Absence !!!

noreply@blogger.com (Anonymous) — Fri, 7 Nov 2014 02:58:00 -0800

How to Check who used your PC in your Absence!

These days generally some people log into our PC and check photos and other data or any other useful information without our permission, and we always don’t want anybody to access our PC without our permission which most of the people like to do . If you want to know the details that when was your PC accessed, then I am here to show you how can you check who logged on to your PC.

Check who use your PC in your Absence? – Procedure

1) First goto start and type Run > After that in run type 'cmd' (without inverted comas) and press Enter.

2) The command prompt window will open , Now type eventvwr.msc and hit the Enter button

3) Wait for some time ,after that the Event viewer window will open.

4) The event viewer window will show you the Detail logs of your PC, It stores Three types of log files

1) Application
2) Security,
3) System

All logs are Archived and Reviewed, We are using the System Log to fulfill our purpose

5) Click on Windows log and select System log

6) This will show you all the detail of your PC which happened recently. That’s all after doing above steps

you will get the detailed report of who logged in your PC. If you will find any problem on this post ("Check

who use your PC in your Absence?") then tell us we are happy to help you....

noreply@blogger.com (Anonymous) — Sun, 2 Nov 2014 01:29:00 -0800

What is it SQL Injection?

SQL Injection is one of the many web attack mechanisms used by hackers to steal data from organizations. It is perhaps one of the most common application layer attack techniques used today. It is the type of attack that takes advantage of improper coding of your web applications that allows hacker to inject SQL commands into say a login form to allow them to gain access to the data held within your database.
In essence, SQL Injection arises because the fields available for user input allow SQL statements to pass through and query the database directly.

SQL Injection: An In-depth Explanation

Web applications allow legitimate website visitors to submit and retrieve data to/from a database over the Internet using their preferred web browser. Databases are central to modern websites – they store data needed for websites to deliver specific content to visitors and render information to customers, suppliers, employees and a host of stakeholders. User credentials, financial and payment information, company statistics may all be resident within a database and accessed by legitimate users through off-the-shelf and custom web applications. Web applications and databases allow you to regularly run your business.
SQL Injection is the hacking technique which attempts to pass SQL commands (statements) through a web application for execution by the backend database. If not sanitized properly, web applications may result in SQL Injection attacks that allow hackers to view information from the database and/or even wipe it out.
Such features as login pages, support and product request forms, feedback forms, search pages, shopping carts and the general delivery of dynamic content, shape modern websites and provide businesses with the means necessary to communicate with prospects and customers. These website features are all examples of web applications which may be either purchased off-the-shelf or developed as bespoke programs.
These website features are all susceptible to SQL Injection attacks which arise because the fields available for user input allow SQL statements to pass through and query the database directly.

SQL Injection: A Simple Example

Take a simple login page where a legitimate user would enter his username and password combination to enter a secure area to view his personal details or upload his comments in a forum.
When the legitimate user submits his details, an SQL query is generated from these details and submitted to the database for verification. If valid, the user is allowed access. In other words, the web application that controls the login page will communicate with the database through a series of planned commands so as to verify the username and password combination. On verification, the legitimate user is granted appropriate access.
Through SQL Injection, the hacker may input specifically crafted SQL commands with the intent of bypassing the login form barrier and seeing what lies behind it. This is only possible if the inputs are not properly sanitised (i.e., made invulnerable) and sent directly with the SQL query to the database. SQL Injection vulnerabilities provide the means for a hacker to communicate directly to the database.
The technologies vulnerable to this attack are dynamic script languages including ASP, ASP.NET, PHP, JSP, and CGI. All an attacker needs to perform an SQL Injection hacking attack is a web browser, knowledge of SQL queries and creative guess work to important table and field names. The sheer simplicity of SQL Injection has fuelled its popularity.

noreply@blogger.com (Anonymous) — Sun, 2 Nov 2014 01:21:00 -0700

what is proxy server?

A proxy server, also known as a "proxy" or "application-level gateway", is a computer that acts as a gateway between a local network (e.g., all the computers at one company or in one building) and a larger-scale network such as the Internet. Proxy servers provide increased performance and security. In some cases, they monitor employees' use of outside resources.
A proxy server works by intercepting connections between sender and receiver. All incoming data enters through one port and is forwarded to the rest of the network via another port. By blocking direct access between two networks, proxy servers make it much more difficult for hackers to get internal addresses and details of a private network.
Some proxy servers are a group of applications or servers that block common Internet services. For example, an HTTP proxy intercepts web access, and an SMTP proxy intercepts email. A proxy server uses a network addressing scheme to present one organization-wide IP address to the Internet. The server funnels all user requests to the Internet and returns responses to the appropriate users. In addition to restricting access from outside, this mechanism can prevent inside users from reaching specific Internet resources (e.g., certain web sites). A proxy server can also be one of the components of a firewall.
Proxies may also cache web pages. Each time an internal user requests a URL from outside, a temporary copy is stored locally. The next time an internal user requests the same URL, the proxy can serve the local copy instead of retrieving the original across the network, improving performance.
Note: Do not confuse a proxy server with a NAT (Network Address Translation) device. A proxy server connects to, responds to, and receives traffic from the Internet, acting on behalf of the client computer, while a NAT device transparently changes the origination address of traffic coming through it before passing it to the Internet.
For those who understand the OSI (Open System Interconnection) model of networking, the technical difference between a proxy and a NAT is that the proxy server works on the transport layer (layer 4) or higher of the OSI model, whereas a NAT works on the network layer (layer 3).