appletlifecycle.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 appletlifecycle;
	/** 
	 * 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.*;
import java.applet.*;

public class AppletLifeCycle extends Applet {

  int i_Init_Count;
  int i_Start_Count;
  int i_Stop_Count;
  int i_Destroy_Count;
  int i_Paint_Count;

  public AppletLifeCycle() {
    System.out.println("执行构造方法");
    i_Init_Count = 0;
    i_Start_Count = 0;
    i_Stop_Count = 0;
    i_Destroy_Count = 0;
    i_Paint_Count = 0;
  }
  public void init() {
    System.out.println("执行初始化Applet");
    i_Init_Count++;
    System.out.println("执行init()计数值 = " + i_Init_Count);
  }
  public void start() {
    System.out.println("Applet开始运行");
    i_Start_Count++;
    System.out.println("执行start()计数值 = " + i_Start_Count);
  }
  public void stop() {
    System.out.println("Applet停止运行");
    i_Stop_Count++;
    System.out.println("执行stop()计数值 = " + i_Stop_Count);
  }
  public void destroy() {
    System.out.println("退出（终止）程序");
    i_Destroy_Count++;
    System.out.println("执行destroy()计数值 = " + i_Destroy_Count);
  }
  public void paint(Graphics g) {
    System.out.println("输出显示内容");
    i_Paint_Count++;
    System.out.println("执行paint()计数值 = " + i_Paint_Count);
    g.drawString("你好！",30,30);
  }
}