Java Tutorial/Swing/JFrame States

Deiconifies a frame; the maximized bits are not affected.

   <source lang="java">

import java.awt.Frame; public class Main {

 public static void main(String[] argv) throws Exception {
   Frame frame = new Frame();
   frame.setSize(300, 300);
   frame.setVisible(true);
   deiconify(frame);
 }
 public static void deiconify(Frame frame) {
   int state = frame.getExtendedState();
   // Clear the iconified bit
   state &= ~Frame.ICONIFIED;
   // Deiconify the frame
   frame.setExtendedState(state);
 }

}</source>

Determining When a Component Has Been Made Visible, Moved, or Resized

   <source lang="java">

import java.awt.ruponent; import java.awt.Dimension; import java.awt.Point; import java.awt.event.ruponentAdapter; import java.awt.event.ruponentEvent; import java.awt.event.ruponentListener; import javax.swing.JFrame; public class Main {

 public static void main() {
   ComponentListener listener = new ComponentAdapter() {
     public void componentShown(ComponentEvent evt) {
       Component c = (Component) evt.getSource();
       System.out.println("Component is now visible");
     }
     public void componentHidden(ComponentEvent evt) {
       Component c = (Component) evt.getSource();
       System.out.println("Component is now hidden");
     }
     public void componentMoved(ComponentEvent evt) {
       Component c = (Component) evt.getSource();
       Point newLoc = c.getLocation();
       System.out.println("Get new location");
     }
     public void componentResized(ComponentEvent evt) {
       Component c = (Component) evt.getSource();
       Dimension newSize = c.getSize();
       System.out.println("Get new size");
     }
   };
   JFrame frame = new JFrame();
   frame.setSize(300, 300);
   frame.addComponentListener(listener);
   frame.setVisible(true);
 }

}</source>

Determining When a Frame or Window Is Iconized or Maximized

   <source lang="java">

import java.awt.Frame; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import java.awt.event.WindowStateListener; public class Main {

 public static void main() {
   Frame frame = new Frame();
   WindowStateListener listener = new WindowAdapter() {
     public void windowStateChanged(WindowEvent evt) {
       int oldState = evt.getOldState();
       int newState = evt.getNewState();
       if ((oldState & Frame.ICONIFIED) == 0 && (newState & Frame.ICONIFIED) != 0) {
         System.out.println("Frame was iconized");
       } else if ((oldState & Frame.ICONIFIED) != 0 && (newState & Frame.ICONIFIED) == 0) {
         System.out.println("Frame was deiconized");
       }
       if ((oldState & Frame.MAXIMIZED_BOTH) == 0 && (newState & Frame.MAXIMIZED_BOTH) != 0) {
         System.out.println("Frame was maximized");
       } else if ((oldState & Frame.MAXIMIZED_BOTH) != 0 && (newState & Frame.MAXIMIZED_BOTH) == 0) {
         System.out.println("Frame was minimized");
       }
     }
   };
   frame.addWindowStateListener(listener);
   frame.setVisible(true);
 }

}</source>

Determining When a Frame or Window Is Opened or Closed

   <source lang="java">

import java.awt.Frame; import java.awt.event.WindowAdapter; import java.awt.event.WindowEvent; import java.awt.event.WindowListener; public class Main {

 public static void main() {
   Frame frame = new Frame();
   WindowListener listener = new WindowAdapter() {
     public void windowOpened(WindowEvent evt) {
       Frame frame = (Frame) evt.getSource();
       System.out.println(frame.getTitle());
     }
     public void windowClosing(WindowEvent evt) {
       Frame frame = (Frame) evt.getSource();
       System.out.println(frame.getTitle());
     }
     public void windowClosed(WindowEvent evt) {
       Frame frame = (Frame) evt.getSource();
       System.out.println(frame.getTitle());
     }
   };
   frame.addWindowListener(listener);
   frame.setVisible(true);
 }

}</source>

Iconifies a frame; the maximized bits are not affected.

   <source lang="java">

import java.awt.Frame; public class Main {

 public static void main() {
   Frame frame = new Frame();
   frame.setSize(300, 300);
   frame.setVisible(true);
   iconify(frame);
 }
 public static void iconify(Frame frame) {
   int state = frame.getExtendedState();
   // Set the iconified bit
   state |= Frame.ICONIFIED;
   // Iconify the frame
   frame.setExtendedState(state);
 }

}</source>

Maximizes a frame; the iconified bit is not affected

   <source lang="java">

import java.awt.Frame; public class Main {

 public static void main(String[] argv) throws Exception {
   Frame frame = new Frame();
   frame.setSize(300, 300);
   frame.setVisible(true);
   minimize(frame);
 }
 public static void minimize(Frame frame) {
   int state = frame.getExtendedState();
   // Clear the maximized bits
   state &= ~Frame.MAXIMIZED_BOTH;
   // Maximize the frame
   frame.setExtendedState(state);
 }

}</source>

Setting the Bounds for a Maximized Frame

   <source lang="java">

import java.awt.Frame; import java.awt.Rectangle; public class Main {

 public static void main() {
   Frame frame = new Frame();
   Rectangle bounds = new Rectangle(20, 20, 200, 200);
   frame.setMaximizedBounds(bounds);
   frame.setVisible(true);
 }

}</source>