Need help making Objects visable (swing)

N

NNTPmail

In the following code, Main().jButton1's ActionPerformed does not
result in a visable SubForm. What am I doing wrong?

/*
* Main.java
*
* Created on December 14, 2006, 6:02 PM
*/

package Test;

/**
*
* @author Administrator
*/
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 ">

private void initComponents() {
jButton1 = new javax.swing.JButton();


setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jButton1.setText("jButton1");
jButton1.addActionListener(new java.awt.event.ActionListener()
{
public void actionPerformed(java.awt.event.ActionEvent evt)
{
jButton1ActionPerformed(evt);
}
});

org.jdesktop.layout.GroupLayout layout = new
org.jdesktop.layout.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(

layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(0, 400, Short.MAX_VALUE)
.add(jButton1)
);
layout.setVerticalGroup(

layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(0, 300, Short.MAX_VALUE)
.add(jButton1)
);
pack();
}// </editor-fold>

private void jButton1ActionPerformed(java.awt.event.ActionEvent
evt) {
new SubForm().setVisible(true);
}

/**
* @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
private javax.swing.JButton jButton1;
// End of variables declaration

}


/*
* SubForm.java
*
* Created on December 14, 2006, 6:02 PM
*/

package Test;

/**
*
* @author Administrator
*/
public class SubForm extends javax.swing.JPanel {

/** Creates new form SubForm */
public SubForm() {
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 ">

private void initComponents() {
jLabel1 = new javax.swing.JLabel();

jLabel1.setText("SubForm Showing");

org.jdesktop.layout.GroupLayout layout = new
org.jdesktop.layout.GroupLayout(this);
this.setLayout(layout);
layout.setHorizontalGroup(

layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.add(182, 182, 182)
.add(jLabel1)
.addContainerGap(133, Short.MAX_VALUE))
);
layout.setVerticalGroup(

layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.add(84, 84, 84)
.add(jLabel1)
.addContainerGap(202, Short.MAX_VALUE))
);
}// </editor-fold>


// Variables declaration - do not modify
private javax.swing.JLabel jLabel1;
// End of variables declaration

}
 
K

Knute Johnson

In the following code, Main().jButton1's ActionPerformed does not
result in a visable SubForm. What am I doing wrong?

/*
* Main.java
*
* Created on December 14, 2006, 6:02 PM
*/

package Test;

/**
*
* @author Administrator
*/
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 ">

private void initComponents() {
jButton1 = new javax.swing.JButton();


setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jButton1.setText("jButton1");
jButton1.addActionListener(new java.awt.event.ActionListener()
{
public void actionPerformed(java.awt.event.ActionEvent evt)
{
jButton1ActionPerformed(evt);
}
});

org.jdesktop.layout.GroupLayout layout = new
org.jdesktop.layout.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(

layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(0, 400, Short.MAX_VALUE)
.add(jButton1)
);
layout.setVerticalGroup(

layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(0, 300, Short.MAX_VALUE)
.add(jButton1)
);
pack();
}// </editor-fold>

private void jButton1ActionPerformed(java.awt.event.ActionEvent
evt) {
new SubForm().setVisible(true);
}

/**
* @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
private javax.swing.JButton jButton1;
// End of variables declaration

}


/*
* SubForm.java
*
* Created on December 14, 2006, 6:02 PM
*/

package Test;

/**
*
* @author Administrator
*/
public class SubForm extends javax.swing.JPanel {

/** Creates new form SubForm */
public SubForm() {
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 ">

private void initComponents() {
jLabel1 = new javax.swing.JLabel();

jLabel1.setText("SubForm Showing");

org.jdesktop.layout.GroupLayout layout = new
org.jdesktop.layout.GroupLayout(this);
this.setLayout(layout);
layout.setHorizontalGroup(

layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.add(182, 182, 182)
.add(jLabel1)
.addContainerGap(133, Short.MAX_VALUE))
);
layout.setVerticalGroup(

layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.add(84, 84, 84)
.add(jLabel1)
.addContainerGap(202, Short.MAX_VALUE))
);
}// </editor-fold>


// Variables declaration - do not modify
private javax.swing.JLabel jLabel1;
// End of variables declaration

}

Your code is a mess. You will get much better help if you post a simple
compilable example.

As to your problem, SubForm is not a top level window and setting
visible on it will do nothing. If you to see it, add it to a JFrame or
JWindow and show the window.

knute...
 

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