mainPanel.removeAll();
mainPanel.add(new Login());
mainPanel.repaint();
} ```
wenn ich das so mache löscht er mir die componennten vom panel aber er zeichnet nicht das login panel.
```/*
* Login.java
*
* Created on 2. Juli 2008, 21:44
*/
package net.ligascript;
/**
*
* @author IreBen
*/
public class Login extends javax.swing.JPanel {
/** Creates new form Login */
public Login() {
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.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jButton1 = new javax.swing.JButton();
jTextField1 = new javax.swing.JTextField();
jPasswordField1 = new javax.swing.JPasswordField();
jLabel1.setText("Username");
jLabel2.setText("Passwort");
jButton1.setText("Login");
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
this.setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(60, 60, 60)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel1)
.addComponent(jLabel2))
.addGap(29, 29, 29)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jPasswordField1)
.addComponent(jButton1)
.addComponent(jTextField1, javax.swing.GroupLayout.DEFAULT_SIZE, 145, Short.MAX_VALUE))
.addContainerGap(118, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(65, 65, 65)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel1)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel2)
.addComponent(jPasswordField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(48, 48, 48)
.addComponent(jButton1)
.addContainerGap(106, Short.MAX_VALUE))
);
}// </editor-fold>
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JPasswordField jPasswordField1;
private javax.swing.JTextField jTextField1;
// End of variables declaration
}
nicht repaint(), sondern validate()
ich muss noch einen Fehler haben, da es so leider noch nicht funktioniert.
Ich arbeite mit Netbeans.
Ich habe einmal ein JFrame (Client) mit einem Menu und einem mainPanel.
* Client.java
*
* Created on 2. Juli 2008, 21:21
*/
package net.ligascript;
import javax.swing.JPanel;
/**
*
* @author IreBen
*/
public class Client extends javax.swing.JFrame {
/** Creates new form Client */
public Client() {
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.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
mainPanel = new javax.swing.JPanel();
jLabel1 = new javax.swing.JLabel();
mainMenu = new javax.swing.JMenuBar();
menuDatei = new javax.swing.JMenu();
menuItemLogin = new javax.swing.JMenuItem();
menuItemLogout = new javax.swing.JMenuItem();
menuItemEinstellungen = new javax.swing.JMenuItem();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jLabel1.setText("Dies ist der Ligascript Messenger 1.0");
javax.swing.GroupLayout mainPanelLayout = new javax.swing.GroupLayout(mainPanel);
mainPanel.setLayout(mainPanelLayout);
mainPanelLayout.setHorizontalGroup(
mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(mainPanelLayout.createSequentialGroup()
.addGap(109, 109, 109)
.addComponent(jLabel1)
.addContainerGap(116, Short.MAX_VALUE))
);
mainPanelLayout.setVerticalGroup(
mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(mainPanelLayout.createSequentialGroup()
.addGap(26, 26, 26)
.addComponent(jLabel1)
.addContainerGap(239, Short.MAX_VALUE))
);
menuDatei.setText("Datei");
menuDatei.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
menuDateiActionPerformed(evt);
}
});
menuItemLogin.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_L, java.awt.event.InputEvent.CTRL_MASK));
menuItemLogin.setText("Login");
menuItemLogin.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
menuItemLoginActionPerformed(evt);
}
});
menuDatei.add(menuItemLogin);
menuItemLogout.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_O, java.awt.event.InputEvent.CTRL_MASK));
menuItemLogout.setText("Logout");
menuDatei.add(menuItemLogout);
menuItemEinstellungen.setAccelerator(javax.swing.KeyStroke.getKeyStroke(java.awt.event.KeyEvent.VK_E, java.awt.event.InputEvent.CTRL_MASK));
menuItemEinstellungen.setText("Einstellungen");
menuDatei.add(menuItemEinstellungen);
mainMenu.add(menuDatei);
setJMenuBar(mainMenu);
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(mainPanel, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(mainPanel, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
);
pack();
}// </editor-fold>
private void menuDateiActionPerformed(java.awt.event.ActionEvent evt) {
}
private void menuItemLoginActionPerformed(java.awt.event.ActionEvent evt) {
mainPanel.removeAll();
mainPanel.add(new Login());
mainPanel.validate();
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new Client().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JLabel jLabel1;
private javax.swing.JMenuBar mainMenu;
private javax.swing.JPanel mainPanel;
private javax.swing.JMenu menuDatei;
private javax.swing.JMenuItem menuItemEinstellungen;
private javax.swing.JMenuItem menuItemLogin;
private javax.swing.JMenuItem menuItemLogout;
// End of variables declaration
}
und dann möchte ich für jedes Menu Item ein wechselndes Panel haben. Dementsprechend habe ich noch ein Panel:
* Login.java
*
* Created on 2. Juli 2008, 21:44
*/
package net.ligascript;
/**
*
* @author IreBen
*/
public class Login extends javax.swing.JPanel {
/** Creates new form Login */
public Login() {
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.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jButton1 = new javax.swing.JButton();
jTextField1 = new javax.swing.JTextField();
jPasswordField1 = new javax.swing.JPasswordField();
jLabel1.setText("Username");
jLabel2.setText("Passwort");
jButton1.setText("Login");
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
this.setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(60, 60, 60)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel1)
.addComponent(jLabel2))
.addGap(29, 29, 29)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(jPasswordField1)
.addComponent(jButton1)
.addComponent(jTextField1, javax.swing.GroupLayout.DEFAULT_SIZE, 145, Short.MAX_VALUE))
.addContainerGap(118, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(65, 65, 65)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel1)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(18, 18, 18)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel2)
.addComponent(jPasswordField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(48, 48, 48)
.addComponent(jButton1)
.addContainerGap(106, Short.MAX_VALUE))
);
}// </editor-fold>
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JPasswordField jPasswordField1;
private javax.swing.JTextField jTextField1;
// End of variables declaration
}
ok es lag daran das ich bei dme Login Panel keine Größe vergeben habe 