Java Programming

Hi all,

* In a Java based web application, if we check the value of an instance variable, each Thread (Request to the Server) has different values.
* This means each thread has newly created object of a Java class.
* But when we talk about thread safe Java methods, it's recommended that you use "Synchronized" to protect particular steps in a method for thread safety.

So my question is, if each thread create a brand new object, how come different threads invoke the same method? All instance & local variable will be completely new from thread to thread.

Please help to understand this.

Thanks
Uditha

************************************************************************************************
Reference:
Java class that will be invoked by URL
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public class HelloObjectWorld
{
private double testVariable;
private static int testConstant;


public HelloObjectWorld()
{
testVariable=Math.random();
System.out.println("############################ I AM AN INSTANCE VARIABLE" + testVariable); // Different for each Thread(Request)
testConstant=121;
System.out.println("############################ I AM A CLASS VARIABLE" + testConstant); // Same for every Thread
}