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I know that there are probably a million posts about this however I can not find any that can answer my question.
I have two forms in Netbeans( Java ) one of the frames loads up another to enter a text address but the information is not passed back to the main form.
I have tried to use the super() function but it just passes a NullPointerException. I think that I'm close but haven't quite got it:
main.java:
Code:
public class main extends javax.swing.JFrame
{
private winTwo winTwo = new winTwo();
public main()
{
super( "main" );
initComponents();
}
private void initComponents()
{
// some generic components
}
private void button(java.awt.event.ActionEvent evt)
{
winTwo ss = new winTwo( this );
ss.main( null );
}
public void setName( String name )
{
System.out.println( "Set name: " + name );
}
}
winTwo.java:
Code:
public class serverSettings extends javax.swing.JFrame
{
private static helpClient parent = null;
public serverSettings( JFrame parent, String s )
{
super( s );
initComponents();
}
public serverSettings( JFrame parent )
{
super();
}
private void btnAccept(java.awt.event.ActionEvent evt)
{
parent.setName( "Hello World" );
}
public static void main( String args[] )
{
java.awt.EventQueue.invokeLater( new Runnable()
{
public void run()
{
main Main = new main( parent );
Main.setVisible( true );
}
} );
}
package multiForm;
public class frameOne extends javax.swing.JFrame
{
private static frameTwo two = new frameTwo();
public frameOne()
{
initComponents();
}
// <editor-fold defaultstate="collapsed" desc=" Generated Code ">//GEN-BEGIN:initComponents
private void initComponents() {
jButton1 = new javax.swing.JButton();
jLabel1 = new javax.swing.JLabel();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jButton1.setText("Click Me!");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
jLabel1.setText("Should Change");
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING, false)
.addComponent(jLabel1, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addComponent(jButton1, javax.swing.GroupLayout.Alignment.LEADING, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addContainerGap()
.addComponent(jLabel1)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 20, Short.MAX_VALUE)
.addComponent(jButton1)
.addContainerGap())
);
pack();
}// </editor-fold>//GEN-END:initComponents
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
two.setVisible( true );
}//GEN-LAST:event_jButton1ActionPerformed
public static void main( String args[] )
{
java.awt.EventQueue.invokeLater( new Runnable()
{
public void run()
{
new frameOne().setVisible( true );
}
} );
}
// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.JButton jButton1;
private javax.swing.JLabel jLabel1;
// End of variables declaration//GEN-END:variables
}
Code:
package multiForm;
public class frameTwo extends javax.swing.JFrame
{
public frameTwo()
{
initComponents();
}
// <editor-fold defaultstate="collapsed" desc=" Generated Code ">//GEN-BEGIN:initComponents
private void initComponents() {
jTextField1 = new javax.swing.JTextField();
jButton1 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jTextField1.setText("Set label on frame one");
jButton1.setText("send text");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jTextField1, javax.swing.GroupLayout.DEFAULT_SIZE, 376, Short.MAX_VALUE)
.addComponent(jButton1, javax.swing.GroupLayout.Alignment.TRAILING))
.addContainerGap())
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(jButton1)
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
pack();
}// </editor-fold>//GEN-END:initComponents
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {//GEN-FIRST:event_jButton1ActionPerformed
String s = jTextField1.getText();
// the string should be sent to the first class and set the label here
// i have tried to used the functions super and parent but i cant get them to work :(
this.dispose();
}//GEN-LAST:event_jButton1ActionPerformed
public static void main( String args[] )
{
java.awt.EventQueue.invokeLater( new Runnable()
{
public void run()
{
new frameTwo().setVisible( true );
}
} );
}
// Variables declaration - do not modify//GEN-BEGIN:variables
private javax.swing.JButton jButton1;
private javax.swing.JTextField jTextField1;
// End of variables declaration//GEN-END:variables
}
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