我们可以在Java中同步run()方法吗？
是的，我们可以run()在Java中同步一个方法，但这不是必需的，因为该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个好习惯，因为它同时被多个线程调用。
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();
}
}输出结果
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
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