package concurrency;

/**

* RUN:

* javac concurrency/SyncObject.java && java concurrency.SyncObject

*

* OUTPUT:

* g()

* f()

* f()

* f()

* f()

* f()

* g()

* g()

* g()

* 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();

}

}

class DualSynch {

private Object syncObject = new Object();

public synchronized void f() {

for (int i = 0; i < 5; i++) {

System.out.println("f()");

Thread.yield();

}

}

public void g() {

synchronized(syncObject) {

for (int i = 0; i < 5; i++) {

System.out.println("g()");

Thread.yield();

}

}

}

}