Swing MouseListener Interface

MouseEvent類處理的實現這個接口。類的對象必須註冊一個組件。使用addMouseListener()方法，該對象可以被註冊。

接口聲明

以下是聲明 java.awt.event.MouseListener接口：

public interface MouseListener extends EventListener

接口方法

S.N.

方法 & 描述

void mouseClicked(MouseEvent e)
Invoked when the mouse button has been clicked (pressed and released) on a component.

void mouseEntered(MouseEvent e)
Invoked when the mouse enters a component.

void mouseExited(MouseEvent e)
Invoked when the mouse exits a component.

void mousePressed(MouseEvent e)
Invoked when a mouse button has been pressed on a component.

void mouseReleased(MouseEvent e)
Invoked when a mouse button has been released on a component.

方法繼承

這個接口從以下接口繼承的方法：

java.awt.EventListener

MouseListener 例子

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

SwingListenerDemo.java

package com.yiibai.gui; import java.awt.*; import java.awt.event.*; import javax.swing.*; public class SwingListenerDemo { private JFrame mainFrame; private JLabel headerLabel; private JLabel statusLabel; private JPanel controlPanel; public SwingListenerDemo(){ prepareGUI(); } public static void main(String[] args){ SwingListenerDemo swingListenerDemo = new SwingListenerDemo(); swingListenerDemo.showMouseListenerDemo(); } 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 showMouseListenerDemo(){ headerLabel.setText("Listener in action: MouseListener"); JPanel panel = new JPanel(); panel.setBackground(Color.magenta); panel.setLayout(new FlowLayout()); panel.addMouseListener(new CustomMouseListener()); JLabel msglabel = new JLabel("Welcome to TutorialsPoint SWING Tutorial." ,JLabel.CENTER); panel.add(msglabel); msglabel.addMouseListener(new CustomMouseListener()); panel.add(msglabel); controlPanel.add(panel); mainFrame.setVisible(true); } class CustomMouseListener implements MouseListener{ public void mouseClicked(MouseEvent e) { statusLabel.setText("Mouse Clicked: ("+e.getX()+", "+e.getY() +")"); } public void mousePressed(MouseEvent e) { } public void mouseReleased(MouseEvent e) { } public void mouseEntered(MouseEvent e) { } public void mouseExited(MouseEvent e) { } } }

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 comyiibaiguiSwingListenerDemo.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.SwingListenerDemo

驗證下面的輸出

SWING