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Java控制多线程执行顺序
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package net.jasonjiang.thread;
import java.io.IOException;
public class ThreadTestNew {
public static void main(String[] args) throws IOException {
final Test obj = new Test();
new Thread() {
public void run() {
obj.m1();
}
}.start();
new Thread() {
public void run() {
obj.m2();
}
}.start();
new Thread() {
public void run() {
obj.m3();
}
}.start();
}
}
class Test {
volatile int target = 1;
public synchronized void m1() {
for (int i = 0; i < 10; i++) {
while (target == 2 || target == 3) {
try {
wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
System.out.println("m1() =" + i);
target = 2;
notifyAll();
}
}
public synchronized void m2() {
for (int i = 0; i < 10; i++) {
while (target == 1 || target == 3) {
try {
wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
System.out.println("m2() =" + i);
target = 3;
notifyAll();
}
}
public synchronized void m3() {
for (int i = 0; i < 10; i++) {
while (target == 1 || target == 2) {
try {
wait();
} catch (InterruptedException e) {
e.printStackTrace();
}
}
System.out.println("m3() =" + i);
target = 1;
notifyAll();
}
}
}运行结果：
m1() =0
m2() =0
m3() =0
m1() =1
m2() =1
m3() =1
m1() =2
m2() =2
m3() =2
m1() =3
m2() =3
m3() =3
m1() =4
m2() =4
m3() =4
m1() =5
m2() =5
m3() =5
m1() =6
m2() =6
m3() =6
m1() =7
m2() =7
m3() =7
m1() =8
m2() =8
m3() =8
m1() =9
m2() =9
m3() =9
