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POjava thread synchronization issue
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copied!<p>Would like to post some doubts regarding Thread synchronization. I understood the concepts of synchronization. But when I implemented a sample java program through multithreading, I could not achieve the result what I want. But finally I could achieve the result by changing one line of code.But I would like to know whats wrong with the below code.</p> <p>Here when I use synchronized block, synchnonized(SharedResource.class) I could achieve the result what I want. why it is not working for synchonized method and synchronized(this) block?</p> <pre><code>public class SharedResource { public synchronized void access(String name){ System.out.println(name+" :accessed shared resoure"); System.out.println(name+" doing his job: "); for(int i = 0; i < 5;i++){ try { System.out.println(name+": "+ i); Thread.sleep(500); } catch (InterruptedException e) { e.printStackTrace(); } } System.out.println(name+" :finished doing his job.."); } } public class SharedAccessThread implements Runnable { private String name ; public SharedAccessThread(String name) { this.name = name ; } @Override public void run() { SharedResource resource = new SharedResource(); resource.access(Thread.currentThread().getName()); } } public class MultiThreading { public static void main(String[] args) { SharedAccessThread thread = new SharedAccessThread(Thread.currentThread().getName()); Thread t1 = new Thread(thread); t1.setName("A"); Thread t2 = new Thread(thread); t2.setName("b"); Thread t3 = new Thread(thread); t3.setName("C"); t1.start(); t2.start(); t3.start(); } } The expected out put is below: A :accessed shared resoure A doing his job: A: 0 A: 1 A: 2 A: 3 A: 4 A :finished doing his job.. C :accessed shared resoure C doing his job: C: 0 C: 1 C: 2 C: 3 C: 4 C :finished doing his job.. b :accessed shared resoure b doing his job: b: 0 b: 1 b: 2 b: 3 b: 4 b :finished doing his job.. </code></pre> <p>But it gives in a shuffled manner. That means A accessed shared resource..B doing his job...,etc which I dont want.</p>

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