Why pass By reference is not working with String Object

[Ravi Kiran Va]

Hi
Can you please tell me
Why this pass By reference is not working .

I am sending an String Object into a Method as Parameter and changing its value inside the method .But its not changing its value .

Please help.

public class PBR 
{

	public static void main(String args[])
	{
		
	String str = new String("Ravi");
	
	PBR pb = new PBR();
	pb.testme(str);
	
	System.out.println("The value of the str is  "+str);
	}
	
	public void testme(String  methodparam)
	{
		
		methodparam = "Kiran";
		
		
	}
}

But to my surprise the Output is Ravi Only .

Thank you .

[Patricia Samuel]

Because the very first Rule about the String is - It is immutable.

[Ravi Kiran Va]

oh i forgot .

Thank you very much.

[Rob Spoor]

There is no such thing as pass by reference in Java: http://faq.javaranch.com/java/CallByReferenceVsCallByValue

[sanjit nayak]

There is no such thing as pass by reference in Java: In java it supports call by value