DualSynch.java Source code

Introduction

Here is the source code for DualSynch.java

Source

// : c13:SyncObject.java
// Synchronizing on another object
// From 'Thinking in Java, 3rd ed.' (c) Bruce Eckel 2002
// www.BruceEckel.com. See copyright notice in CopyRight.txt.

class DualSynch {
    private Object syncObject = new Object();

    public synchronized void f() {
        System.out.println("Inside f()");
        // Doesn't release lock:
        try {
            Thread.sleep(500);
        } catch (InterruptedException e) {
            throw new RuntimeException(e);
        }
        System.out.println("Leaving f()");
    }

    public void g() {
        synchronized (syncObject) {
            System.out.println("Inside g()");
            try {
                Thread.sleep(500);
            } catch (InterruptedException e) {
                throw new RuntimeException(e);
            }
            System.out.println("Leaving g()");
        }
    }
}

public class SyncObject {

    public static void main(String[] args) {
        final DualSynch ds = new DualSynch();
        new Thread() {
            public void run() {
                ds.f();
            }
        }.start();
        ds.g();
    }
} ///:~