スレッド同期面接問題
3883 ワード
package com.wsy.model;
/**
* 10 , 5 , 10
*
* @author wsy
*
*/
public class TraditionalThreadCommunication {
static Bussiness bussiness = new Bussiness();
public static void main(String[] args) {
new Thread(new Runnable() {
@Override
public void run() {
for (int i = 1; i <= 10; i++) {
bussiness.sub(i);
}
}
}).start();
for (int i = 1; i <= 10; i++) {
bussiness.main(i);
}
}
}
class Bussiness {
static boolean isThreadSub = true;
public synchronized void sub(int i) {
while (!isThreadSub) {
try {
this.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
for (int j = 1; j <= 10; j++) {
System.out.println("sub: " + j + " of loop " + i);
}
isThreadSub = false;
this.notify();
}
public synchronized void main(int i) {
while (isThreadSub) {
try {
this.wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
for (int j = 1; j <= 5; j++) {
System.out.println("main: " + j + " of loop " + i);
}
isThreadSub = true;
this.notify();
}
}
出力結果:sub: 1 of loop 1 sub: 2 of loop 1 sub: 3 of loop 1 sub: 4 of loop 1 sub: 5 of loop 1 sub: 6 of loop 1 sub: 7 of loop 1 sub: 8 of loop 1 sub: 9 of loop 1 sub: 10 of loop 1 main: 1 of loop 1 main: 2 of loop 1 main: 3 of loop 1 main: 4 of loop 1 main: 5 of loop 1 sub: 1 of loop 2 sub: 2 of loop 2 sub: 3 of loop 2 sub: 4 of loop 2 sub: 5 of loop 2 sub: 6 of loop 2 sub: 7 of loop 2 sub: 8 of loop 2 sub: 9 of loop 2 sub: 10 of loop 2 main: 1 of loop 2 main: 2 of loop 2 main: 3 of loop 2 main: 4 of loop 2 main: 5 of loop 2 sub: 1 of loop 3 sub: 2 of loop 3 sub: 3 of loop 3 sub: 4 of loop 3 sub: 5 of loop 3 sub: 6 of loop 3 sub: 7 of loop 3 sub: 8 of loop 3 sub: 9 of loop 3 sub: 10 of loop 3 main: 1 of loop 3 main: 2 of loop 3 main: 3 of loop 3 main: 4 of loop 3 main: 5 of loop 3 sub: 1 of loop 4 sub: 2 of loop 4 sub: 3 of loop 4 sub: 4 of loop 4 sub: 5 of loop 4 sub: 6 of loop 4 sub: 7 of loop 4 sub: 8 of loop 4 sub: 9 of loop 4 sub: 10 of loop 4 main: 1 of loop 4 main: 2 of loop 4 main: 3 of loop 4 main: 4 of loop 4 main: 5 of loop 4 sub: 1 of loop 5 sub: 2 of loop 5 sub: 3 of loop 5 sub: 4 of loop 5 sub: 5 of loop 5 sub: 6 of loop 5 sub: 7 of loop 5 sub: 8 of loop 5 sub: 9 of loop 5 sub: 10 of loop 5 main: 1 of loop 5 main: 2 of loop 5 main: 3 of loop 5 main: 4 of loop 5 main: 5 of loop 5 sub: 1 of loop 6 sub: 2 of loop 6 sub: 3 of loop 6 sub: 4 of loop 6 sub: 5 of loop 6 sub: 6 of loop 6 sub: 7 of loop 6 sub: 8 of loop 6 sub: 9 of loop 6 sub: 10 of loop 6 main: 1 of loop 6 main: 2 of loop 6 main: 3 of loop 6 main: 4 of loop 6 main: 5 of loop 6 sub: 1 of loop 7 sub: 2 of loop 7 sub: 3 of loop 7 sub: 4 of loop 7 sub: 5 of loop 7 sub: 6 of loop 7 sub: 7 of loop 7 sub: 8 of loop 7 sub: 9 of loop 7 sub: 10 of loop 7 main: 1 of loop 7 main: 2 of loop 7 main: 3 of loop 7 main: 4 of loop 7 main: 5 of loop 7 sub: 1 of loop 8 sub: 2 of loop 8 sub: 3 of loop 8 sub: 4 of loop 8 sub: 5 of loop 8 sub: 6 of loop 8 sub: 7 of loop 8 sub: 8 of loop 8 sub: 9 of loop 8 sub: 10 of loop 8 main: 1 of loop 8 main: 2 of loop 8 main: 3 of loop 8 main: 4 of loop 8 main: 5 of loop 8 sub: 1 of loop 9 sub: 2 of loop 9 sub: 3 of loop 9 sub: 4 of loop 9 sub: 5 of loop 9 sub: 6 of loop 9 sub: 7 of loop 9 sub: 8 of loop 9 sub: 9 of loop 9 sub: 10 of loop 9 main: 1 of loop 9 main: 2 of loop 9 main: 3 of loop 9 main: 4 of loop 9 main: 5 of loop 9 sub: 1 of loop 10 sub: 2 of loop 10 sub: 3 of loop 10 sub: 4 of loop 10 sub: 5 of loop 10 sub: 6 of loop 10 sub: 7 of loop 10 sub: 8 of loop 10 sub: 9 of loop 10 sub: 10 of loop 10 main: 1 of loop 10 main: 2 of loop 10 main: 3 of loop 10 main: 4 of loop 10 main: 5 of loop 10