继之前的线程循环加到窗口中运行

编程技术  /  houtizong 发布于 3年前   100

之前写了有关java线程的循环执行和结束，因为想制作成exe文件，想把执行的效果加到窗口上，所以就结合了JFrame和JPanel写了这个程序，这里直接贴出代码，在窗口上运行的效果下面有附图。

package thread;import java.awt.Graphics;import java.text.SimpleDateFormat;import java.util.Random;import javax.swing.JFrame;import javax.swing.JPanel;/** * 线程没完没了的循环 * * @author FuJianyong * 2015-6-16下午09:22:11 */public class EndlessLoop {//是否结束线程的旗标volatile boolean flag = true;//控制是否输出数字volatile boolean numIncrement = false;class Endless extends Thread{    public void run(){      long startTime = System.currentTimeMillis();      writeString("线程开始正在生成随机数...");      Random random = new Random();      //随机数开关      int power = 0;      //计数      int i = 0;      while(flag){      power = random.nextInt(50);      writeString("while循环产生的随机数：   " + power);      if(power == 19){      //结束线程      flag = false;      break;      }      for(;;){      power = random.nextInt(888);      if(power % 2 == 0 || power > 200){      //偶数则计数器增加      numIncrement = true;      }else{      //奇数则计数器停止增加      numIncrement = false;      }      if(numIncrement){      writeString("for循环产生的随机数是：  " + power + "   计数器增加： " + ++i + "    " + new SimpleDateFormat("yyyy-MM-dd HH:mm:ss").format(System.currentTimeMillis()));      try {Thread.sleep(power * 2);  } catch (InterruptedException e) {// TODO Auto-generated catch blocke.printStackTrace();  }      }else{      writeString("for循环产生的随机数是：  " + power + "    计数器停止...");      break;      }      }      }      long endTime = System.currentTimeMillis();      writeString("线程结束等待垃圾回收...");      writeString("=====线程执行开始时间为：        " + new SimpleDateFormat("yyyy 年 MM 月 dd 日 HH 时 mm 分 ss 秒").format(startTime));      writeString("=====线程执行结束时间为：        " + new SimpleDateFormat("yyyy 年 MM 月 dd 日 HH 时 mm 分 ss 秒").format(endTime));   }}public void start(){   new Endless().start();}public static void main(String[] args) {new EndlessLoop().start();}//重写构造方法public EndlessLoop(){JFrame frame = new JFrame("test");frame.setLocation(500, 200);frame.setSize(500, 400);frame.setVisible(true);frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);frame.add(draw);}Draw draw = new Draw();String temp0 = "";String temp1 = "";String temp2 = "";String temp3 = "";String temp4 = "";String temp5 = "";String temp6 = "";String temp7 = "";String temp8 = "";String temp9 = "";String temp10 = "";class Draw extends JPanel{public void paint(Graphics g){super.paintComponent(g);g.drawString(temp0, 20, 20);g.drawString(temp1, 20, 50);g.drawString(temp2, 20, 80);g.drawString(temp3, 20, 110);g.drawString(temp4, 20, 140);g.drawString(temp5, 20, 170);g.drawString(temp6, 20, 200);g.drawString(temp7, 20, 230);g.drawString(temp8, 20, 260);g.drawString(temp9, 20, 290);g.drawString(temp10, 20, 320);g.dispose();}}int i = 0;public void writeString(String str){switch(i){  case 0:  temp0 = str;  break;  case 1:   temp1 = str;  break;  case 2:   temp2 = str;  break;  case 3:   temp3 = str;  break;  case 4:   temp4 = str;  break;  case 5:   temp5 = str;  break;  case 6:   temp6 = str;  break;  case 7:   temp7 = str;  break;  case 8:   temp8 = str;  break;  case 9:   temp9 = str;  break;  case 10:   temp10 = str;  break;}if(i>10){temp1 = temp2;temp2 = temp3;temp3 = temp4;temp4 = temp5;temp5 = temp6;temp6 = temp7;temp7 = temp8;temp8 = temp9;temp9 = temp10;temp10 = str;}i++;draw.repaint();}}