eventhandleframe(3).java

递归子程序法：对应每个非终结符语法单元编一个独立的处理过程（或子程序）。语法分析从读入第一个单词开始

	package eventhandle;
	/** 
	 * Java语言实验参考程序
	 * Company 北京师范大学计算机系
 
	 * @author 孙一林
	 * @version 1.0
	 */
	import java.awt.*;
	import java.awt.event.*;
	public class EventHandleFrame extends Frame {
	  Button button = new Button();
	  public EventHandleFrame() {
	    try {
	      Init();
	    }
	    catch(Exception e) {
	      e.printStackTrace();
	    }
	  }
	  public static void main(String[] args) {
	    EventHandleFrame eventHandleFrame = new EventHandleFrame();
	    eventHandleFrame.setSize(400,300);
	    eventHandleFrame.show();
	  }
	  private void Init() throws Exception {
	    this.setTitle("事件监听器和适配器类实验");
	    this.setLayout(null);
	    this.add(button, null);
	    button.setLabel("单击按钮退出程序");
	    button.setBounds(new Rectangle(80, 120, 240, 30));
	    /* ================ 开始添加注册按钮事件监听器代码 ================ */
	    button.addActionListener(
				new EventHandleFrame_button_actionAdapter(this));
	    /* ================ 添加注册按钮事件监听器代码结束 ================ */
	  }
	  /* ================= 开始添加按钮事件处理方法代码 ================== */
	  void button_actionPerformed(ActionEvent e) {
	    dispose();
	    System.exit(1);
	  }
	  /* ================= 添加按钮事件处理方法代码结束 ================= */
	}
	/* ============== 开始添加按钮事件监听器和适配器类代码 ============== */
	class EventHandleFrame_button_actionAdapter		// 定义按钮事件适配器类
						implements java.awt.event.ActionListener {
	  EventHandleFrame adaptee;
	  EventHandleFrame_button_actionAdapter(EventHandleFrame adaptee) {
	    this.adaptee = adaptee;
	  }
	  public void actionPerformed(ActionEvent e) {
	    adaptee.button_actionPerformed(e);
	  }
	}
	/* ============== 添加按钮事件监听器和适配器类代码结束 ============== */