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| import java.util.Random;
public class ThreadLocalDemo {
public static void main(String[] args) throws InterruptedException {
final Thread t1 = new Thread(new RandomCounter("线程1"));
final Thread t2 = new Thread(new RandomCounter("线程2"));
final Thread t3 = new Thread(new RandomCounter("线程3"));
t1.start();
t2.start();
t3.start();
t1.join();
t2.join();
t3.join();
}
private static class RandomCounter implements Runnable {
private final ThreadLocal<Integer> integerThreadLocal = new ThreadLocal<>();
private String name;
RandomCounter(String name) {
this.name = name;
Thread.currentThread().setName(name);
}
@Override
public void run() {
final Random random = new Random();
for (int i = 0; i < 3; i++) {
integerThreadLocal.set(random.nextInt(1000));
System.out.println(name + ": 当前local值为：" + integerThreadLocal.get());
integerThreadLocal.remove();
try {
Thread.sleep(1000);
} catch (InterruptedException e) {
e.printStackTrace();
}
}
}
}
}
|