Problems...Solved!

2018-06-12T23:52:00.001-07:00

How to Fix Divi 3 Color-Picker not showing HEX colour textbox

I installed Divi (3.0.40) template on my Wordpress (4.9.5) site yesterday to test it... and I immediately run into a problem... Choosing a colour from a colour palette did not display the textbox to type in the colour hex code...

So go and edit

/wp-content / themes / Divi / css / theme-customizer-controls-styles.css

around line 69 find wp-picker-container and add the text in red:

.wp-picker-container input[type=text].wp-color-picker, .wp-core-ui .wp-picker-default, .wp-core-ui .wp-picker-clear { width: 45% !important; vertical-align: bottom; margin-top: 10px; display:inline !important;}

2018-05-07T06:40:00.003-07:00

How to Fix Slider Module Slide General Settings not Displayed

I installed Divi (3.0.40) template on my Wordpress (4.9.5) site yesterday to test it... and I immediately run into a problem... in various cases, one of them the slider - slide settings where not visible.

I figured out that the wp-color-picker-alpha.min.js Javascript, which was adding a height of 100% to a span inside the wp-picker-container class, was causing the problem.

To solve the problem go to folder:

\wp-content\themes\Divi\includes\builder\scripts\ext\
and edit wp-color-picker-alpha.min.js

Find this line:

css({width:"100%",height:"100%",position:"absolute",top:0,left:0,"border-top-left-radius":"3px","border-bottom-left-radius":"3px",background:r.color.toString()}))

and change the height to "0px"

css({width:"100%",height:"0px",position:"absolute",top:0,left:0,"border-top-left-radius":"3px","border-bottom-left-radius":"3px",background:r.color.toString()}))

I hope this works for you as well,

MairaK

Introduction to JAVA - Review Questions

2012-07-03T12:08:00.000-07:00

Very Basic Questions:

1) JAVA uses classes and objects. Define classes and objects? What is their relationship?

2) Which of the following are Java reserved words?

run, import, default, implement, main, int, Char, exit, extends, catch, if, for, when, do-while, While

Basic Questions:

Which statements are true?

The default constructor initialises method variables.
The default constructor has the same access as its class.
The default constructor invokes the no-arg constructor of the superclass.
If a class lacks a no-arg constructor, the compiler always creates a default constructor.
The compiler creates a default constructor only when there are no other constructors for the class.

Programming Problems:

1) Create a method called hasDoubleLetters() that returns true if a given word has at least 2 same letters and false if not.

Try to answer them and I will give you feedback!

... more to follow if you want... :-)

GUI Components

2012-07-01T07:07:00.001-07:00

This presentation describes JAVA swing GUI components and Layout Managers

Powerpoint presentation in movie mode....

Pointpoint one by one Slides

Java Objects - Basics!!!!

2011-03-22T00:26:00.000-07:00

How to create and "use" an object in Java

In the following tutorial, I will explain how to create an Object in JAVA, and how you can "use" this object from a "tester" program...

The object described is a cashRegistrer System in a Supermarket. Multiple instances of cashRegisters exist, each one of them has its own balance (money inside the machine). This is an instance variable.
The only operation the machines perform is to put money inside (and increase the balance).
This operation is called payAmount and needs two inputs :
1) the amount of money the customer needs to pay, for example: 5.75 (amountPayable)
2) the amount of money that the customer gives to the cashier, for example: 10 (amountGiven)
the same operation returns a value, which is the change that the cashier should give to the customer.
if the amount of money the customer gives to the cashier (amountGiven) is less than the required amount (amountPayable) the operation should return a negative number that represents how much more money the customer should pay.

A "global" static variable should keep tract of the money inside ALL instances of cashRegisters (totalBalance). This is called a class variable.
_________________________________________________________________________________
After the object is created a TesterProgram will instantiate 3 cashRegisters: A, B and C.
We will use the following scenario for our tester:

A: starts with 100 euros in the register.
B: starts with 250 euros in the register.
C: starts with 0 euros in the register.

Someone has to pay in cashRegister A the amount 7,86 and gives a 20 euro bill. Print the change the cashier should give.
Someone has to pay in cashRegister B the amount 22 and gives a 50 euro bill. Print the change the cashier should give.
Someone has to pay in cashRegister C the amount 18 and gives a 20 euro bill. Print the change the cashier should give... (be careful, the object code needs modification... the case that the register does not have change is not covered)

At the end display the balance of each cash register and the totalBalance of all cashRegisters.

The full program source follows:

Enjoy!!!!

public class cashRegister {

private double balance; /*this attribute is an instance variable, so each and every cashRegister will have its own balance */

private static double totalBalance=0; /* this attribute belongs to the cashRegister class, shared among cashRegister instances */

/* A constructor method executes every time an object is instantiated.. look at the following line of the UseCashRegisters program :

cashRegister A = new cashRegister(100); --> the single parameter constructor is called

cashRegister C = new cashRegister(); --> the no-args constructor is called */

//no-args constructor

public cashRegister () {

balance=0;

}

//constructor with parameters

public cashRegister (double InitialMoney) {

balance = InitialMoney;

totalBalance += balance;

}

public double getBalance() {

return balance;

}

public static double getTotalBalance() {

return totalBalance;

}

public double payAmount (double amountPayable, double amountGiven) {

if (amountGiven < amountPayable) {

return amountPayable - amountGiven;

}

else {

balance += amountPayable;

totalBalance += amountPayable;

return amountGiven - amountPayable;

}

***************************************************************

public class UseCashRegisters {

public static void main(String[] args) {

cashRegister A = new cashRegister(100);

cashRegister B = new cashRegister(250);

System.out.println(A.getBalance());

System.out.println(B.getBalance());

System.out.println("Change: " + A.payAmount(7.86, 20));

System.out.println("Change: " + B.payAmount(22, 50));

System.out.println(cashRegister.getTotalBalance());

}

How to Create a JAVA/SWING Desktop Application

2011-03-22T00:04:00.000-07:00

Watch the video to learn the basic steps required to create a simple GUI application in Jdeveloper.
The application just performs the task of adding two numbers in textfields and and with the press of a button displays the result in a label...

Enjoy!

Jpanel and GridLayout

2010-11-20T23:58:00.000-08:00

This the code (used at the screen-cam) to create at Run-Time the buttons inside your jPanel, which has a gridLayout of 6 columns and 14 Rows (as required by your project)

for (int Row=0;Row < seats.length;Row++)
for (int Column=0; Column < seats[Row].length; Column++) {
JButton b = new JButton();
b.setEnabled(false);
b.setBackground(Color.BLUE);
seats[Row][Column]=b;
jPanel1.add(b);
}

Make sure you place the code above in the correct position in your source code... inside
jbInit() method

make also sure that you have declared:
private JButton seats [][] = new JButton [14][6];
on top of your code inside :
public class _______ extends JFrame {
where all object declarations are...

How to create your Java Executable...

2010-11-20T22:43:00.000-08:00

What is a package?
A package is a collection of related classes... (physically in your hard-disk is a directory/folder) all files under the package will be compressed together in a jar file...(a java archive like zip)
Your java application may contain one or more packages to logically group functionality.

When you deploy your application you create one jar file per project.
In this jar file you must specify which is the java class file that contains the main class (the starter class) of your project.

Follow the instructions on the screen-cam to create your java "executable".

How to create JRadioButtons, JComboBoxes and JtextAreas

2010-11-19T00:57:00.000-08:00

Today I feel much better...
These past few days I have been exploring the distance teaching/learning possibilities...
Virtual Class did not work, through our computer lab firewall (unfortunately) but today I created two screen recording with sound to try and show you how you can use other swing components like: Radio Button, Printable text Areas and comboboxes.

Try to watch the 2 parts of my video (its less than 15 mins)

Part 1

Part 2

If you have any questions please comment...