黑马程序员——AWT鼠标键盘事件

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package gui.awt;import java.awt.Button;import java.awt.FlowLayout;import java.awt.Frame;import java.awt.TextField;import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.awt.event.KeyAdapter;import java.awt.event.KeyEvent;import java.awt.event.MouseAdapter;import java.awt.event.MouseEvent;import java.awt.event.WindowAdapter;import java.awt.event.WindowEvent;public class MouseListener_class {private Frame f;private Button b,bb;private TextField tf;public MouseListener_class(){init();}public void init(){f=new Frame("鼠标点击事件");b=new Button("点击鼠标");bb=new Button("键盘事件监听");tf=new TextField(20);f.add(b);f.add(tf);f.add(bb);f.setLayout(new FlowLayout());f.setBounds(200,200,400,300);f.setVisible(true);event();}public void event(){//对Frame面板添加WindowListener窗口监听f.addWindowListener(new WindowAdapter() {public void windowClosing(WindowEvent e){System.exit(0);}});//对按钮添加actionListener动作监听,添加动作监听后，选中控件后，可以按键盘空格继续对其操作，但如果该控件同时添加了鼠标监听，鼠标监听先运行b.addActionListener(new ActionListener() {public void actionPerformed(ActionEvent e) {System.out.println("动作监听");}});b.addMouseListener(new MouseAdapter() {public void mouseClicked(MouseEvent e){System.out.println("鼠标单击监听");}public void mousePressed(MouseEvent e){System.out.println("鼠标摁下");}public void mouseReleased(MouseEvent e){System.out.println("鼠标抬起");}});//键盘监听事件bb.addKeyListener(new KeyAdapter() {public void keyReleased(KeyEvent e){if(e.isControlDown() && (e.getKeyCode()==KeyEvent.VK_ENTER)){//判断摁下组合键，然后再对其操作System.out.println("运用组合键crtl+enter");}else if(e.getKeyCode()==KeyEvent.VK_ENTER){//判断摁下的是那个键，然后再对其针对性操作System.out.println("按下的键为:回车键");}else{System.out.println(e.getKeyText(e.getKeyCode())+",,,,"+e.getKeyChar()+",,,,,"+e.getKeyCode());//获取键盘所摁下的键的名称获取键的字符  获取键的ASCII码}}});tf.addKeyListener(new KeyAdapter() {public void keyPressed(KeyEvent e){if(!(e.getKeyCode()>=KeyEvent.VK_0&&e.getKeyCode()<=KeyEvent.VK_9)){System.out.println("数字yes:"+e.getKeyCode());e.consume();//屏蔽键，不会把非法值输入到textfield中}//System.out.println(e.getKeyChar());}});}public static void main(String[] args) {new MouseListener_class();}}

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