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import java.lang.management.ManagementFactory;
import java.lang.management.ThreadMXBean;
import java.util.concurrent.Executors;
import java.util.concurrent.ScheduledExecutorService;
/**
* @author xjn
* @since 2020-03-04
*/
public class DeadLock {
private static Object A = new Object();
private static Object B = new Object();
private static ThreadMXBean mxBean = ManagementFactory.getThreadMXBean();
public static void main(String[] args) throws Exception {
Runnable a = () -> {
mxBean.findDeadlockedThreads();
synchronized (A) {
System.out.println("获取到A...尝试获取B");
synchronized (B) {
System.out.println("获取到AB");
try {
Thread.sleep(1000);
} catch (Exception e) {
}
}
}
};
Runnable b = () -> {
synchronized (B) {
System.out.println("获取到B...尝试获取A");
synchronized (A) {
System.out.println("获取到AB");
try {
Thread.sleep(1000);
} catch (Exception e) {
}
}
}
};
for (int i = 0; i < 10; i++) {
new Thread(a).start();
new Thread(b).start();
}
ScheduledExecutorService scheduledExecutorService = Executors.newScheduledThreadPool(1);
}
}