JPanel only paints on second press of JButton
Why does the GrphScreen JPanel only paint the images when I press the JButton1 a second time? The method called is jButton1MouseReleased
import java.awt.Image;
import java.awt.Toolkit;
import java.util.Random;
/*
* Main.java
*
* Created on August 16, 2006, 3:50 PM
*/
/**
*
* @author rockie12
*/
public class Main extends javax.swing.JFrame {
/** Creates new form Main */
public Main() {
initComponents();
}
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
// <editor-fold defaultstate="collapsed" desc=" Generated Code ">//GEN-BEGIN:initComponents
private void initComponents() {
jPanel1 = new javax.swing.JPanel();
jScrollPane1 = new javax.swing.JScrollPane();
MainTextArea = new javax.swing.JTextArea();
GrphScreen = new javax.swing.JPanel();
jPanel2 = new javax.swing.JPanel();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jPanel1.setBorder(javax.swing.BorderFactory.createTitledBorder("PK Test"));
MainTextArea.setColumns(20);
MainTextArea.setRows(5);
jScrollPane1.setViewportView(MainTextArea);
GrphScreen.setBorder(new javax.swing.border.MatteBorder(null));
org.jdesktop.layout.GroupLayout GrphScreenLayout = new org.jdesktop.layout.GroupLayout(GrphScreen);
GrphScreen.setLayout(GrphScreenLayout);
GrphScreenLayout.setHorizontalGroup(
GrphScreenLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(0, 364, Short.MAX_VALUE)
);
GrphScreenLayout.setVerticalGroup(
GrphScreenLayout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(0, 100, Short.MAX_VALUE)
);
org.jdesktop.layout.GroupLayout jPanel1Layout = new org.jdesktop.layout.GroupLayout(jPanel1);
jPanel1.setLayout(jPanel1Layout);
jPanel1Layout.setHorizontalGroup(
jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jScrollPane1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 366, Short.MAX_VALUE)
.add(GrphScreen, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
);
jPanel1Layout.setVerticalGroup(
jPanel1Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(org.jdesktop.layout.GroupLayout.TRAILING, jPanel1Layout.createSequentialGroup()
.add(GrphScreen, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED, 7, Short.MAX_VALUE)
.add(jScrollPane1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
);
jPanel2.setBorder(javax.swing.BorderFactory.createTitledBorder("Controls"));
jButton1.setText("Fight");
jButton1.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseReleased(java.awt.event.MouseEvent evt) {
jButton1MouseReleased(evt);
}
});
jButton2.setText("Walk Around");
jButton2.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseReleased(java.awt.event.MouseEvent evt) {
jButton2MouseReleased(evt);
}
});
org.jdesktop.layout.GroupLayout jPanel2Layout = new org.jdesktop.layout.GroupLayout(jPanel2);
jPanel2.setLayout(jPanel2Layout);
jPanel2Layout.setHorizontalGroup(
jPanel2Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jPanel2Layout.createSequentialGroup()
.addContainerGap()
.add(jPanel2Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jButton1)
.add(jButton2))
.addContainerGap(240, Short.MAX_VALUE))
);
jPanel2Layout.linkSize(new java.awt.Component[] {jButton1, jButton2}, org.jdesktop.layout.GroupLayout.HORIZONTAL);
jPanel2Layout.setVerticalGroup(
jPanel2Layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(org.jdesktop.layout.GroupLayout.TRAILING, jPanel2Layout.createSequentialGroup()
.add(jButton2)
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED, 36, Short.MAX_VALUE)
.add(jButton1)
.addContainerGap())
);
org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(org.jdesktop.layout.GroupLayout.TRAILING, layout.createSequentialGroup()
.addContainerGap()
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING)
.add(org.jdesktop.layout.GroupLayout.LEADING, jPanel2, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.add(org.jdesktop.layout.GroupLayout.LEADING, jPanel1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.addContainerGap()
.add(jPanel1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
.add(jPanel2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.addContainerGap(14, Short.MAX_VALUE))
);
pack();
}// </editor-fold>//GEN-END:initComponents
private void jButton2MouseReleased(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton2MouseReleased
// TODO add your handling code here:
Random randNum = new Random();
int checkNum = randNum.nextInt(12);
if(checkNum%4 == 0)
{
MainTextArea.setText("Trainer Found!!! Prepare to Battle!!!");
}
else if(checkNum < 5)
{
MainTextArea.setText("Pokemon Found!!! Prepare to Battle!!!");
}
else
{
MainTextArea.setText("No Pokemon Found!!! Try Again!!!");
// determine what pokemon you have to fight against
// next 2 lines create a variable to store the image in
Image image;
Toolkit toolkit = Toolkit.getDefaultToolkit();
// generate random number to use for which pokemon image to load
checkNum = randNum.nextInt(250) - 100;
// load the image file into the image variable
image = toolkit.getImage(checkNum + ".gif");
// draw image on the screen in the GrphScreen JPanel
GrphScreen.getGraphics().drawImage(image,10,10,null);
// generate random number to use for which pokemon image to load
checkNum = randNum.nextInt(250) - 100;
// get image for next pokemon and put it in the image variable
image = toolkit.getImage(checkNum + ".gif");
// draw image on the screen in the GrphScreen JPanel
GrphScreen.getGraphics().drawImage(image,100,10,null);
}
}//GEN-LAST:event_jButton2MouseReleased
private void jButton1MouseReleased(java.awt.event.MouseEvent evt) {//GEN-FIRST:event_jButton1MouseReleased
// TODO add your handling code here:
Random randNum = new Random();
int checkNum = randNum.nextInt(255) - 100;
// next 2 lines create a variable to store the image in
Image image;
Toolkit toolkit = Toolkit.getDefaultToolkit();
// load the image file into the image variable
image = toolkit.getImage("250.gif");
// draw image on the screen in the GrphScreen JPanel
GrphScreen.getGraphics().drawImage(image,10,10,null);
// get image for next pokemon and put it in the image variable
image = toolkit.getImage("175.gif");
// draw image on the screen in the GrphScreen JPanel
GrphScreen.getGraphics().drawImage(image,100,10,null);
}//GEN-LAST:event_jButton1MouseReleased
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new Main().setVisible(true);
}
});
}
// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.JPanel GrphScreen;
private javax.swing.JTextArea MainTextArea;
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JPanel jPanel1;
private javax.swing.JPanel jPanel2;
private javax.swing.JScrollPane jScrollPane1;
// End of variables declaration//GEN-END:variables
}
