Runnable 구현하기

 

 

Ex12_5.java

 

package ex12_5; public class Ex12_5 {     public static void main(String[] args) {         GooGoo g2 = new GooGoo(2);         Thread t2 = new Thread(g2);         Thread t3 = new Thread(new GooGoo(3));         Thread t4 = new Thread(new GooGoo(4));         Thread t5 = new Thread(new GooGoo(5));         Thread t6 = new Thread(new GooGoo(6));         Thread t7 = new Thread(new GooGoo(7));         Thread t8 = new Thread(new GooGoo(8));         Thread t9 = new Thread(new GooGoo(9));         t2.start();         t3.start();         t4.start();         t5.start();         t6.start();         t7.start();         t8.start();         t9.start();         System.out.println("main 종료");     } }

 

 

GooGoo.java

package ex12_5; import java.io.IOException; public class GooGoo implements Runnable  {     private int dan;     public GooGoo(int dan){     this.dan = dan;     }     public void run() {         long sleepTime = (long)(Math.random() * 500);         System.out.println(dan+"단이"+sleepTime+"만큼 sleep..");         try{             Thread.sleep(sleepTime);         }catch(Exception e){e.printStackTrace();}                 for(int i = 1; i <= 9; i++){             System.out.print(dan+"단 : "+dan+"*"+i+"="+dan*i);         }     } }

 

결과

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