As a random generator use Class java.util.Random. Method nextInt(...
details in docs
java.util.Random r;
int give_me_number_0_49() {
return r.nextInt(49);
}

Show your typeof_patronJComboBox model. Post more code ... as attachment (for example). Line 9 is on the first look looks is on its way a strange.

You gave advice.

Introduce own boolean flag 'pressed' and use it to switch needed behavior

.

Your program
// s for string and c for search character
int i = 0;
int result = 0; //number of occurences
for(i = 0; i < s.length(); i++)
{
if (s.charAt(i) == c) //...

You've written a program to count the specific character given c. This character may also be a space. How much can be different characters in your text? Each character has its representation as an...

http://www.javaworkspace.com/connectdatabase/connectPostgre.do
http://jdbc.postgresql.org/download.html

Nothing to change. This form is fully acceptable.
--------
You can try CardLayout; on each tab, you can put only the necessary components labels and txtfields, and switch between tabs in accordance...

. check x on input, where x is old
. if x >=0, INPUT never occurs, then x remain forever old >= 0 value

whiteyoh, look at static int ConsoleOptionGUI(String s) method http://www.daniweb.com/forums/thread231390.html
Yet you will not always write all the code in the main method.

public class GCD have a static method gdc. Then you do not need to create new instance of this class .
simply use long val = GDC.gdc(l1,l2);

checkCollision() - method
Imagine, inside dipest loop You want print a dot.
Your loops generates n*n dots.

For size of array=2 , result is 2*2=4 values A,B
AA - the same
AB - ok
BA - compared...

1. static method invoke in static form: CLASS . STATIC_METHOD_NAME ( PARAMETERS );
2. static definition of String array: new String[]{"a.wav"} // array length=1
public void test() {
...

In place of varible Rectangle r
introduce method

public Rectangle getRectangle() {
return new Rectangle(xCoord, yCoord, Width, Height);
}
or update, while move() r varible

...

seats[i] = new JButton(String.valueOf(i + 1));
seats[i].addActionListener(this);

public void actionPerformed(ActionEvent ae){
String text = ((JButton) e.getSource()).getText();
//.....

http://java.sun.com/mailers/techtips/corejava/2006/tt0822.html

public void delete(String val) {
current = head.next;
temp = head;
boolean looking = true;
while...

for sequence 2MR*2=R*2= ok.

case '=':
resultStr = evaluate();
displayText.setText(resultStr);
numStr1 = resultStr;
...

first is OK
String strTemp = JOptionPane.showInputDialog(null, "Please Enter C To Open A Current Account \n Or J To Open A Joint Account");
switch (strTemp.charAt(0)) {
case...

for example Line:114
Convert char array to String and then write.
Use String constructor: public String(char[] value)
String s = new String(password);
System.out.println("Password: " + s);
or...

In this case

only marked lines are important
where Wins: can be omitted ( always==1 winner)
and Total: can be a another counter, which can be setup to zero ,when the record is saved to a file.

If I understand the importance "Wins:". For me, "Wins:" is a player's ID and the number of this identifier is the number of his victories. In that case it would be to determine the number of players...

how many variables are needed?
Theoretically
maximum of counter < 20
no more than 20.
20, if randomNumber (always) == 1

In place of array you can introduce six int varibles. i0,i1,i2,i3,i4,i5 and use "if" steatment
if(readedInt==0){
i0=i0+1;
}else if (readedInt==1){....

due to sequential nature of reading file simpler is introduce array int[5]
int readedInt;
and increase (+1) value at index of array[readedInt]
now array is ready to statistic analysis
Not to...

Example output is


Reduce redundants ( in write phase )


Now you can know what to do

You are declared panelCenter2, but you still add buttons to panelCenter.

Overwrite method public String toString() {... inside class Area.

You are using a different constructor public JLabel(String text)You should use anotherpublic JLabel(Icon image)All instances of ImageIcon keep in the array ImageIcon[] iconArray;

via additional ActionListener

public C2() {
c1 = new C1();
add(c1);
c1.addMyListener(new MyAction());
}

private class MyAction implements ActionListener {

package demo;

import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
import java.awt.event.WindowAdapter;
import java.awt.event.WindowEvent;
import...

String[] splitPath = line.split("\\\\");

http://java.sun.com/applets/jdk/1.4/
or with sun jdk install package.
Use also this code in main method

public static void main(String[] args) {
...

look at example ...jdk1.6.0_14/demo/applets/GraphLayout/example1.html
the same behavior

As start work use this templates

import javax.swing.JApplet;

public class YesNoDialog extends JApplet {

/**
* Initialization method that will be called after the applet is loaded
...

Use javax.imageio.ImageIO.read( function,


...
java.lang.String s1 = "IMAGES/Question.gif";
URL url = getClass().getClassLoader().getResource(s1);
try {
...

Inside PicturePanel : remove all conditions

//if (e.getSource() == RunProgram.pic1) {/...
or
//if (e.getSource() == RunProgram.pic2) {/...

and by default initilaize eL1 in constructor:
...

I working on Windows XP platform, and I am able to get the popup for this JTree.
From api doc java:
public boolean isPopupTrigger()
Note: Popup menus are triggered differently on different...

In Hangman paintComponent(Graphics g)
erase the background first.

Posted code not gives base to conclusion. Cast to String? Which part of code want to do it?