Thread类

 1 public class PrintChar implements Runnable {

 2     private char charToPrint;

 3     private int times;

 4

 5     public PrintChar(char c, int t) {

 6         charToPrint = c;

 7         times = t;

 8     }

 9

10     public void run() {

11         try {

12             for (int i = 0; i < times; i++) {

13                 System.out.print(charToPrint);

14                 Thread.sleep(1); // 休眠

15                 Thread.yield(); // 让出线程

16             }

17         } catch (InterruptedException e) {

18

19             e.printStackTrace();

20         }

21     }

22 }

 1 public class PrintNum implements Runnable{

 2

 3     private int lastNum;

 4     public PrintNum(int n){

 5         lastNum = n;

 6     }

 7     public void run() {

 8         for(int i = 1; i <= lastNum; i++){

 9             System.out.print(i);

10         }

11     }

12 }

 1 public class Ch2Sample1 {

 2

 3     public static void main(String[] args) {

 4         Runnable printA = new PrintChar(‘a‘, 100);

 5         Runnable printB = new PrintChar(‘b‘, 100);

 6         Runnable printn = new PrintNum(100);

 7

 8         Thread t1 = new Thread(printA);

 9         Thread t2 = new Thread(printB);

10         Thread t3 = new Thread(printn);

11

12         t1.start();

13         t2.start();

14         t3.start();

15      }

16 }

Thread类