AWT Window類

視窗（Window ）類是一個沒有邊框和選單欄的頂層視窗。它使用BorderLayout作為預設的布局管理器。

類的宣告

以下是宣告的java.awt.Window類：

public class Window
   extends Container
      implements Accessible

類別建構函式

類方法

繼承的方法

這個類繼承的方法從以下類：

• java.awt.Window

• java.awt.Container

• java.awt.Component

• java.lang.Object

Window 範例

選擇使用任何編輯器建立以下java程式 D:/ > AWT > com > yiibai > gui >

package com.yiibai.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 showWindowDemo(){
      headerLabel.setText("Container in action: Window");   
      final MessageWindow window = 
         new MessageWindow(mainFrame,
         "Welcome to TutorialsPoint AWT Tutorial.");

      Button okButton = new Button("Open a Window");
      okButton.addActionListener(new ActionListener() {
         public void actionPerformed(ActionEvent e) {
            window.setVisible(true);
            statusLabel.setText("A Window shown to the user.");                
         }
      });
      controlPanel.add(okButton);
      mainFrame.setVisible(true);  
   }

   class MessageWindow extends Window{
      private String message; 

      public MessageWindow(Frame parent, String message) { 
         super(parent);               
         this.message = message; 
         setSize(300, 300);       
         setLocationRelativeTo(parent);
         setBackground(Color.gray);
      }

      public void paint(Graphics g) { 
         super.paint(g);
         g.drawRect(0,0,getSize().width - 1,getSize().height - 1); 
         g.drawString(message,50,150); 
      } 
   }
}

編譯程式，使用命令提示字元。進入到D:/> AWT，然後鍵入以下命令。

D:AWT>javac comyiibaiguiAwtContainerDemo.java

如果沒有錯誤出現，這意味著編譯成功。使用下面的命令來執行程式。

D:AWT>java com.yiibai.gui.AwtContainerDemo

驗證下面的輸出