1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
class A implements Runnable {
public void run() {
synchronized (A.class) {
System.out.println("A has A.class and now wants B.class");
try {
Thread.sleep(500); // simulates some work being done
} catch (InterruptedException ex) {
System.out.println(ex);
}
synchronized (B.class) {
System.out.println("A got both locks and made progress");
}
}
}
}
class B implements Runnable {
public void run() {
synchronized (B.class) {
System.out.println("B has B.class and now wants A.class");
synchronized (A.class) {
System.out.println("B got both locks and made progress");
}
}
}
}
public class Main {
public static void main(String args[]) throws Exception {
new Thread(new A()).start();
new Thread(new B()).start();
Thread.sleep(1000); // ad-hoc wait till threads finish
}
}
Enter to Rename, Shift+Enter to Preview
