passing by value (CHANGE OF OBJECT REFERENCE)

[sarim raza]

I would like to see an example where a String object, st
String st = new String("wow")
loses its object reference, when a method modifyIt(st), that takes a string object, is able to change the contents of the object by supplying something like "oops".
This should get returned and displayed in the main method, when a call to println is made. "oops"

[Harpal Singh]

Dear sarim,
Strings are immutable....hence cannot be changed..but can be made to point to new object of there type...Hope the below code helps....
<pre>
class sarim
{
static String st = new String("wow");
public static void main(String[ ] args)
{

modifyIt(st);
System.out.println(" "+st);
}
static String modifyIt(String s)
{
s=new String("oops");
st=s;
return st;
}
}
</pre>
Thanks,
Harpal