DeadlockDemo.java Source code

Introduction

Here is the source code for DeadlockDemo.java

Source

public class DeadlockDemo {
    public static void main(String[] args) throws Exception {
        UseShared s1 = new UseShared("x");
        UseShared s2 = new UseShared("y");

        s1.start();
        s2.start();

        s1.join();
        s2.join();
    }
}

class UseShared extends Thread {
    String s1 = "", s2 = "";

    UseShared(String name) {
        setName(name);
    }

    public void run() {
        for (int i = 0; i < 100; i++) {
            if (getName().equals("x"))
                method1();
            else
                method2();

            try {
                Thread.sleep(1000);
            } catch (Exception e) {
            }
        }
    }

    void method1() {
        synchronized (s1) {
            System.out.println("method1: s1");
            synchronized (s2) {
                System.out.println("method1: s2");
            }
        }
    }

    void method2() {
        synchronized (s2) {
            System.out.println("method2: s1");

            synchronized (s1) {
                System.out.println("method2: s2");
            }
        }
    }
}