鼠标动作监听类MouseListener

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<span style="font-size:14px;">import java.awt.event.ActionEvent ;import java.awt.event.ActionListener ;import java.awt.event.WindowListener ;import java.awt.event.WindowAdapter ;import java.awt.event.WindowEvent ;import java.awt.event.KeyEvent ;import java.awt.event.MouseEvent ;import java.awt.event.KeyAdapter ;import java.awt.event.KeyListener ;import java.awt.event.MouseListener ;import javax.swing.JTextArea ;import javax.swing.JFrame ;import javax.swing.JScrollPane ;import javax.swing.JPasswordField ;class MyMouse extends JFrame implements MouseListener{          JTextArea text = new JTextArea() ;        public MyMouse()        {            super.setTitle("鼠标精灵") ;            JScrollPane scr = new JScrollPane(text) ;            scr.setBounds(5,5,300,200) ;            super.add(scr) ;            text.addMouseListener(this) ;            super.addWindowListener(new WindowAdapter()           {             public void WindowClosing(WindowEvent e)            {               System.exit(1) ;            }           }) ;                     super.setSize(400,300) ;           super.setVisible(true) ;           }               public void mouseClicked(MouseEvent e)    //得到鼠标键值       {           int c = e.getButton() ;           String mouseinfo = null;           if(c==MouseEvent.BUTTON1)           {              mouseinfo = "左键\n" ;           }           if(c==MouseEvent.BUTTON2)           {              mouseinfo = "滚轮\n" ;           }           if(c==MouseEvent.BUTTON3)           {              mouseinfo = "右键\n" ;           }           text.append("被按下的是"+mouseinfo) ;       }               public void mouseEntered(MouseEvent e)   //鼠标进入组件        {           text.append("鼠标进入组件\n") ;        }               public void mouseExited(MouseEvent e)     //鼠标离开组件        {            text.append("鼠标离开组件\n") ;        }               public void mousePressed(MouseEvent e)   //鼠标被按下        {           text.append("鼠标被按下\n") ;        }               public void mouseReleased(MouseEvent e)   //鼠标被放开        {           text.append("鼠标被松开\n") ;        }         } ;class Tester{   public static void main(String args[])   {      MyMouse mhk = new MyMouse() ;   }} ;</span>
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