Java 自学AWT入门教程实例源码学习5 。

下面是一个关于使用鼠标适配器的例子。http://blog.163.com/yijun_087/blog/static/41425092009102884959734/

   import java.awt.*;

   import java.awt.event.*;

   public class MouseClickHandler extends MouseAdaper{

   public void mouseClicked(MouseEvent e) //只实现所需要的方法

     { ……

     }  

     ……//不需要实现其他方法

}

java.awt.event包中定义的事件适配器类包括以下7个：

—   ComponentAdapter（组件适配器）；

—   ContainerAdapter（容器适配器）；

—   FocusAdapter（焦点适配器）；

—   KeyAdapter（键盘适配器）；

—   MouseAdapter（鼠标适配器）；

—   MouseMotionAdapter（鼠标运动适配器）；

—   WindowAdapter（窗口适配器）。

最后，作为总结，我们看一个综合实例，它是关于个人简历的一个界面程序。

/**

* Resume.java

*

*/

package sample;

import java.awt.*;

import java.awt.event.*;

public class Resume extends Frame implements ItemListener {

     public static void main (String[] args) {

         final Resume res = new Resume();

         res.addWindowListener(new WindowAdapter(){

             public void windowClosing(WindowEvent evt) {

                 res.setVisible(false);

                 res.dispose();

                 System.exit(0);

             }

         });

         res.setLayoutManager();

         res.initComponents ();

         res.pack();

         res.setVisible(true);

     }

    

     public void setLayoutManager() {

         setLayout(new FlowLayout());

     }

     /**

      *界面初始化

      */

     private void initComponents() {//GEN-BEGIN:initComponents

         choice2 = new java.awt.Choice();

         choice2.add(“Objective”);

         choice2.add(“Qualification”);

         choice2.add(“Experience”);

         choice2.add(“Skillset”);

         choice2.add(“Education”);

         choice2.add(“Training”);

         choice2.addItemListener(this);

         choice2.select(0);

         panel1 = new java.awt.Panel();

         panel2 = new java.awt.Panel();

         textArea2 = new java.awt.TextArea();

         panel3 = new java.awt.Panel();

         textArea1 = new java.awt.TextArea();

         panel4 = new java.awt.Panel();

         textArea3 = new java.awt.TextArea();

         panel5 = new java.awt.Panel();

         textArea4 = new java.awt.TextArea();

         panel6 = new java.awt.Panel();

         textArea5 = new java.awt.TextArea();

         panel7 = new java.awt.Panel();

         textArea6 = new java.awt.TextArea();

        

         choice2.setFont(new java.awt.Font (“Dialog”, 0, 11));

         choice2.setName(“choice2″);

         choice2.setBackground(java.awt.Color.white);

         choice2.setForeground(java.awt.Color.black);

        

         add(choice2);

        

        

         panel1.setLayout(new java.awt.CardLayout());

         panel1.setFont(new java.awt.Font (“Dialog”, 0, 11));

         panel1.setName(“panel20″);

         panel1.setBackground(new java.awt.Color (204, 204, 204));

         panel1.setForeground(java.awt.Color.black);

        

         panel2.setFont(new java.awt.Font (“Dialog”, 0, 11));

         panel2.setName(“panel21″);

         panel2.setBackground(new java.awt.Color (153, 153, 153));

         panel2.setForeground(java.awt.Color.black);

          

         textArea2.setBackground(new java.awt.Color (216, 208, 200));

         textArea2.setName(“text4″);

         textArea2.setEditable(false);

         textArea2.setFont(new java.awt.Font (“Courier New”, 0, 12));

         textArea2.setColumns(80);

         textArea2.setForeground(new java.awt.Color (0, 0, 204));

         textArea2.setText(“Seeking a challenging position as a JAVA Programmer. \n”);

         textArea2.setRows(20);

         panel2.add(textArea2);

            

         panel1.add(panel2, “Objective”);

         

          

         panel3.setFont(new java.awt.Font (“Dialog”, 0, 11));

         panel3.setName(“panel22″);

         panel3.setBackground(new java.awt.Color (153, 153, 153));

         panel3.setForeground(java.awt.Color.black);

        

         textArea1.setBackground(new java.awt.Color (216, 208, 200));

         textArea1.setName(“text3″);

         textArea1.setEditable(false);

         textArea1.setFont(new java.awt.Font (“Courier New”, 1, 12));

         textArea1.setColumns(80);

         textArea1.setForeground(java.awt.Color.black);

         textArea1.setText(“* 7 years C/C++ experience, UNIX/Windows\n* 7 years

experience in RDBMS, including Oracle, Informix and Sybase\n* 3

years programming experience in JAVA on UNIX/WINDOWS\n* 2 years

experience in designing and developing in J2EE\n “);

         textArea1.setRows(20);

         panel3.add(textArea1);

            

         panel1.add(panel3, “Qualification”);

                

         panel4.setFont(new java.awt.Font (“Dialog”, 0, 11));

         panel4.setName(“panel23″);

         panel4.setBackground(new java.awt.Color (153, 153, 153));

         panel4.setForeground(java.awt.Color.black);

          

         textArea3.setBackground(new java.awt.Color (216, 208, 200));

         textArea3.setName(“text5″);

         textArea3.setEditable(false);

         textArea3.setFont(new java.awt.Font (“Courier New”, 0, 12));

         textArea3.setColumns(80);

         textArea3.setForeground(java.awt.Color.blue);

         textArea3.setText(“Technical Support / Systems Engineer\nSun Microsystems

               Inc. China Ltd.   PRC \n”);

         textArea3.setRows(20);

         panel4.add(textArea3);

           

         panel1.add(panel4, “Experience”);

         

         panel5.setFont(new java.awt.Font (“Dialog”, 0, 11));

         panel5.setName(“panel24″);

         panel5.setBackground(new java.awt.Color (153, 153, 153));

         panel5.setForeground(java.awt.Color.black);

         

         textArea4.setBackground(new java.awt.Color (216, 208, 200));

         textArea4.setName(“text6″);

         textArea4.setEditable(false);

         textArea4.setFont(new java.awt.Font (“Courier New”, 0, 12));

         textArea4.setColumns(80);

         textArea4.setForeground(java.awt.Color.blue);

         textArea4.setText(“Programming: C++, JAVA, XML \n”);

         textArea4.setRows(20);

         panel5.add(textArea4);

         

         panel1.add(panel5, “Skillset”);

        

         panel6.setFont(new java.awt.Font (“Dialog”, 0, 11));

         panel6.setName(“panel25″);

         panel6.setBackground(new java.awt.Color (153, 153, 153));

         panel6.setForeground(java.awt.Color.black);

        

         textArea5.setBackground(new java.awt.Color (216, 208, 200));

         textArea5.setName(“text7″);

         textArea5.setEditable(false);

         textArea5.setFont(new java.awt.Font (“Courier New”, 0, 12));

         textArea5.setColumns(80);

         textArea5.setForeground(java.awt.Color.blue);

         textArea5.setText(“University of Science and Technology of China”);

         textArea5.setRows(20);

         panel6.add(textArea5);

            

         panel1.add(panel6, “Education”);

          

         panel7.setFont(new java.awt.Font (“Dialog”, 0, 11));

         panel7.setName(“panel26″);

         panel7.setBackground(new java.awt.Color (153, 153, 153));

         panel7.setForeground(java.awt.Color.black);

        

         textArea6.setBackground(new java.awt.Color (216, 208, 200));

         textArea6.setName(“text8″);

         textArea6.setEditable(false);

         textArea6.setFont(new java.awt.Font (“Courier New”, 0, 12));

         textArea6.setColumns(80);

         textArea6.setForeground(java.awt.Color.blue);

         textArea6.setText(“Sun Microsystems Inc.1998-2001\nAttended training

              course \n”);

         textArea6.setRows(20);

         panel7.add(textArea6);

            

         panel1.add(panel7, “Training”);

          

         add(panel1);

        

     }

     public void itemStateChanged(ItemEvent evt) {

         CardLayout card = (CardLayout)panel1.getLayout();

         card.show(panel1, (String)evt.getItem());

     }

    

     private java.awt.Choice choice2;

     private java.awt.Panel panel1;

     private java.awt.Panel panel2;

     private java.awt.TextArea textArea2;

     private java.awt.Panel panel3;

     private java.awt.TextArea textArea1;

     private java.awt.Panel panel4;

     private java.awt.TextArea textArea3;

     private java.awt.Panel panel5;

     private java.awt.TextArea textArea4;

     private java.awt.Panel panel6;

     private java.awt.TextArea textArea5;

     private java.awt.Panel panel7;

     private java.awt.TextArea textArea6;

}

程序的运行结果见图10-12。

 

图10-12   程序运行结果