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Swing WindowAdapter類

WindowAdapter類接收窗口事件是一個抽象類(適配器)。這個類的所有方法都是空的。這個類是方便的類創建監聽器對象。

類聲明

以下是聲明 java.awt.event.WindowAdapter類:

public abstract class WindowAdapter extends Object implements WindowListener, WindowStateListener, WindowFocusListener

類構造函數

S.N.

構造函數 & 描述

1

WindowAdapter()

類方法

S.N.

方法 & 描述

1

void windowActivated(WindowEvent e)
Invoked when a window is activated.

2

void windowClosed(WindowEvent e)
Invoked when a window has been closed.

3

void windowClosing(WindowEvent e)
Invoked when a window is in the process of being closed.

4

void windowDeactivated(WindowEvent e)
Invoked when a window is de-activated.

5

void windowDeiconified(WindowEvent e)
Invoked when a window is de-iconified.

6

void windowGainedFocus(WindowEvent e)
Invoked when the Window is set to be the focused Window, which means that the Window, or one of its subcomponents, will receive keyboard events.

7

void windowIconified(WindowEvent e)
Invoked when a window is iconified.

8

void windowLostFocus(WindowEvent e)
Invoked when the Window is no longer the focused Window, which means that keyboard events will no longer be delivered to the Window or any of its subcomponents.

9

void windowOpened(WindowEvent e)
Invoked when a window has been opened.

10

void windowStateChanged(WindowEvent e)
Invoked when a window state is changed.

方法繼承

這個類從以下類繼承的方法:

  • java.lang.Object

WindowAdapter 例子

選擇使用任何編輯器創建以下java程序在 D:/ > SWING > com > yiibai > gui >

SwingAdapterDemo.java

package com.yiibai.gui; import java.awt.*; import java.awt.event.*; public class SwingAdapterDemo { private JFrame mainFrame; private JLabel headerLabel; private JLabel statusLabel; private JPanel controlPanel; public SwingAdapterDemo(){ prepareGUI(); } public static void main(String[] args){ SwingAdapterDemo swingAdapterDemo = new SwingAdapterDemo(); swingAdapterDemo.showWindowAdapterDemo(); } private void prepareGUI(){ mainFrame = new JFrame("Java SWING Examples"); mainFrame.setSize(400,400); mainFrame.setLayout(new GridLayout(3, 1)); headerLabel = new JLabel("",JLabel.CENTER ); statusLabel = new JLabel("",JLabel.CENTER); statusLabel.setSize(350,100); mainFrame.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent windowEvent){ System.exit(0); } }); controlPanel = new JPanel(); controlPanel.setLayout(new FlowLayout()); mainFrame.add(headerLabel); mainFrame.add(controlPanel); mainFrame.add(statusLabel); mainFrame.setVisible(true); } private void showWindowAdapterDemo(){ headerLabel.setText("Listener in action: WindowAdapter"); JButton okButton = new JButton("OK"); final JFrame aboutFrame = new JFrame(); aboutFrame.setSize(300,200);; aboutFrame.setTitle("WindowAdapter Demo"); aboutFrame.addWindowListener(new WindowAdapter() { public void windowClosing(WindowEvent windowEvent){ aboutFrame.dispose(); } }); JLabel msglabel = new JLabel("Welcome to TutorialsPoint SWING Tutorial." ,JLabel.CENTER); aboutFrame.add(msgLabel); aboutFrame.setVisible(true); } }

編譯程序,使用命令提示符。到 D:/ > SWING 然後輸出以下命令。

D:SWING>javac comyiibaiguiSwingAdapterDemo.java

如果沒有錯誤出現,這意味着編譯成功。使用下面的命令來運行程序。

D:SWING>java com.yiibai.gui.SwingAdapterDemo

驗證下面的輸出

SWING