我们可以在 Java 中同步 run() 方法吗?
javaobject oriented programmingprogramming更新于 2024/5/9 17:39:00
是的，我们可以在 Java 中同步 run() 方法，但这不是必需的，因为此方法仅由单个线程执行。因此 run() 方法不需要同步。同步其他类的非静态方法是一种很好的做法，因为它同时由多个线程调用。
示例
public class SynchronizeRunMethodTest implements Runnable {
public synchronized void run() {
System.out.println(Thread.currentThread().getName() + " is starting");
for(int i=0; i < 5; i++) {
try {
Thread.sleep(1000);
System.out.println(Thread.currentThread().getName() + " is running");
} catch(InterruptedException ie) {
ie.printStackTrace();
}
}
System.out.println(Thread.currentThread().getName() + " is finished");
}
public static void main(String[] args) {
SynchronizeRunMethodTest test = new SynchronizeRunMethodTest();
Thread t1 = new Thread(test);
Thread t2 = new Thread(test);
t1.start();
t2.start();
}
}
输出
Thread-0 is starting Thread-0 is running Thread-0 is running Thread-0 is running Thread-0 is running Thread-0 is running Thread-0 is finished Thread-1 is starting Thread-1 is running Thread-1 is running Thread-1 is running Thread-1 is running Thread-1 is running Thread-1 is finished
