I had been trying out different behavior of multi-threading in java. If i am using both synchronized static and non static method in a class. What i had understood is,
-> if the thread enters into a synchronize method the thread acquire the lock of an object until the execution of method.
-> if the thread enters into a static synchronize method the thread acquire the lock of a class instead of an object.
The Real confusion part is the output ??.
package com.threadImplementaion.examples; class MyRunable implements Runnable { public void run() { iterationMethod() ; staticIteration(); } public synchronized void iterationMethod() { //int count = 0 ; for(int i = 0 ; i < 5; i++ ) { System.out.println( Thread.currentThread().getName() + " : " + i); } } public static synchronized void staticIteration() { for(int i = 0 ; i < 10 ; i++ ) { System.out.println(Thread.currentThread().getName() + " static " + i); } } } public class MyRunnable { public static void main(String[] args) { Runnable runnable = new MyRunable() ; Thread thread1 = new Thread(runnable); thread1.start(); thread1.setName("Thread1"); Thread thread2 = new Thread(runnable) ; thread2.start(); thread2.setName("Thread2") ; Thread thread3 = new Thread(runnable); thread3.start(); thread3.setName("Thread3"); } } Output : Thread1 : 0 Thread1 : 1 Thread1 : 2 Thread1 : 3 Thread1 : 4 Thread1 static 0 Thread1 static 1 Thread1 static 2 Thread1 static 3 Thread1 static 4 Thread1 static 5 **Thread1 static 6** Thread3 : 0 Thread3 : 1 Thread3 : 2 Thread3 : 3 Thread3 : 4 Thread2 : 0 Thread2 : 1 Thread1 static 7 Thread2 : 2 Thread1 static 8 Thread2 : 3 Thread1 static 9 Thread2 : 4 Thread2 static 0 Thread2 static 1 Thread2 static 2 Thread2 static 3 Thread2 static 4 Thread2 static 5 Thread2 static 6 Thread2 static 7 Thread2 static 8 Thread2 static 9 Thread3 static 0 Thread3 static 1 Thread3 static 2 Thread3 static 3 Thread3 static 4 Thread3 static 5 Thread3 static 6 Thread3 static 7 Thread3 static 8 Thread3 static 9 
