AWT Frame Class

Introduction

The class Frame is a top level window with border and title. It uses BorderLayout as default layout manager.

Class declaration

Following is the declaration for java.awt.Frame class:

public class Frame
   extends Window
      implements MenuContainer

Field

Following are the fields for java.awt.Frame class:

• static float BOTTOM_ALIGNMENT -- Ease-of-use constant for getAlignmentY.

• static int CROSSHAIR_CURSOR -- Deprecated. replaced by Cursor.CROSSHAIR_CURSOR.

• static int DEFAULT_CURSOR -- Deprecated. replaced by Cursor.DEFAULT_CURSOR.

• static int E_RESIZE_CURSOR -- Deprecated. replaced by Cursor.E_RESIZE_CURSOR.

• static int HAND_CURSOR -- Deprecated. replaced by Cursor.HAND_CURSOR.

• static int ICONIFIED -- This state bit indicates that frame is iconified.

• static int MAXIMIZED_BOTH -- This state bit mask indicates that frame is fully maximized (that is both horizontally and vertically).

• static int MAXIMIZED_HORIZ -- This state bit indicates that frame is maximized in the horizontal direction.

• static int MAXIMIZED_VERT -- This state bit indicates that frame is maximized in the vertical direction.

• static int MOVE_CURSOR -- Deprecated. replaced by Cursor.MOVE_CURSOR.

• static int N_RESIZE_CURSOR -- Deprecated. replaced by Cursor.N_RESIZE_CURSOR.

• static int NE_RESIZE_CURSOR -- Deprecated. replaced by Cursor.NE_RESIZE_CURSOR.

• static int NORMAL -- Frame is in the "normal" state.

• static int NW_RESIZE_CURSOR -- Deprecated. replaced by Cursor.NW_RESIZE_CURSOR.

• static int S_RESIZE_CURSOR -- Deprecated. replaced by Cursor.S_RESIZE_CURSOR.

• static int SE_RESIZE_CURSOR -- Deprecated. replaced by Cursor.SE_RESIZE_CURSOR.

• static int SW_RESIZE_CURSOR -- Deprecated. replaced by Cursor.SW_RESIZE_CURSOR.

• static int TEXT_CURSOR -- Deprecated. replaced by Cursor.TEXT_CURSOR.

• static int W_RESIZE_CURSOR -- Deprecated. replaced by Cursor.W_RESIZE_CURSOR.

• static int WAIT_CURSOR -- Deprecated. replaced by Cursor.WAIT_CURSOR.

Class constructors

Class methods

Methods inherited

This class inherits methods from the following classes:

• java.awt.Window

• java.awt.Container

• java.awt.Component

• java.lang.Object

Frame Example

Create the following java program using any editor of your choice in say D:/ > AWT > com > tutorialspoint > gui >

package com.tutorialspoint.gui;

import java.awt.*;
import java.awt.event.*;

public class AwtContainerDemo {
   private Frame mainFrame;
   private Label headerLabel;
   private Label statusLabel;
   private Panel controlPanel;
   private Label msglabel;

   public AwtContainerDemo(){
      prepareGUI();
   }

   public static void main(String[] args){
      AwtContainerDemo  awtContainerDemo = new AwtContainerDemo();          
      awtContainerDemo.showFrameDemo();
   }

   private void prepareGUI(){
      mainFrame = new Frame("Java AWT Examples");
      mainFrame.setSize(400,400);
      mainFrame.setLayout(new GridLayout(3, 1));
      mainFrame.addWindowListener(new WindowAdapter() {
         public void windowClosing(WindowEvent windowEvent){
            System.exit(0);
         }        
      });    
      headerLabel = new Label();
      headerLabel.setAlignment(Label.CENTER);
      statusLabel = new Label();        
      statusLabel.setAlignment(Label.CENTER);
      statusLabel.setSize(350,100);
   
      msglabel = new Label();
      msglabel.setAlignment(Label.CENTER);
      msglabel.setText("Welcome to TutorialsPoint AWT Tutorial.");

      controlPanel = new Panel();
      controlPanel.setLayout(new FlowLayout());

      mainFrame.add(headerLabel);
      mainFrame.add(controlPanel);
      mainFrame.add(statusLabel);
      mainFrame.setVisible(true);  
   }
   
   private void showFrameDemo(){
      headerLabel.setText("Container in action: Frame");   

      final Frame frame = new Frame();
      frame.setSize(300, 300);
      frame.setLayout(new FlowLayout());       
      frame.add(msglabel);
      frame.addWindowListener(new WindowAdapter() {
         public void windowClosing(WindowEvent windowEvent){
            frame.dispose();
         }        
      });    
      Button okButton = new Button("Open a Frame");

      okButton.addActionListener(new ActionListener() {
         public void actionPerformed(ActionEvent e) {
            statusLabel.setText("A Frame shown to the user.");
            frame.setVisible(true);
         }
      });
      controlPanel.add(okButton);

      mainFrame.setVisible(true);  
   }
}

Compile the program using command prompt. Go to D:/ > AWT and type the following command.

D:\AWT>javac com\tutorialspoint\gui\AwtContainerDemo.java

If no error comes that means compilation is successful. Run the program using following command.

D:\AWT>java com.tutorialspoint.gui.AwtContainerDemo

Verify the following output