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| /*第一题： 多线程题， 打印
T1:1
T2:2
T3:3
T1:4
T2:5
T3:6
….
*/
// MultiThreadDemo.java
import java.util.concurrent.locks.Lock;
import java.util.concurrent.locks.ReentrantLock;
public class MultiThreadDemo extends Thread {
int val;
private Lock lock;
public MultiThreadDemo(int i) {
val = i;
lock = new ReentrantLock();
}
public void run() {
lock.lock();
while (val < 100) {
int name = val % 3 == 0 ? 3 : val % 3;
System.out.println("T" + name + " : " + val++);
}
lock.unlock();
}
}
// MultiThreadDemoTest.java
public class MultiThreadDemoTest {
public static void main(String[] args) throws InterruptedException {
// TODO Auto-generated method stub
int val = 1;
MultiThreadDemo t1 = new MultiThreadDemo(val);
val++;
MultiThreadDemo t2 = new MultiThreadDemo(val);
val++;
MultiThreadDemo t3 = new MultiThreadDemo(val);
val++;
t1.start();
t1.join();
t2.start();
t2.join();
t3.start();
t3.join();
}
}
|