Sushil,
First, this question is way off topic.
All Objecs in Java are passed by reference. Objects include Strings and
Arrays, but not the primitive types: (ints, chars, longs, floats, etc.).
So, for instance, in the following excerpt:
public void test()
{
String s = "This is a string";
myMethod(s);
myMethod(s.clone());
myMethod2(5);
}
public void myMethod(String s)
{
System.out.println(s);
}
public void myMethod2(int i)
{
System.out.println(i);
}
The first call to myMethod() is passing the variable "s" by reference; the
second call is passing a _copy_ by reference, which is the closest you can
get to passing an Object by value. The call to myMethod2() will _always_
pass the variable by value, since the parameter is a primitive type and not
an Object. You can't pass primitive types by reference, but you can use one
of the wrapper Objects (Integer, Float, etc.) and pass those by reference.
Kito D. Mann
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Wednesday December 15, 1999 09:27 AM
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cc: (bcc: Kito Mann/PSG/Prudential)
Subject: Parameters passed by reference
Hi,
I would like to know that how can we pass a variable by REFERENCE to a
method within the same class.
I have read that in order to pass by reference, we have to pass the object
itself. But in my case I have to pass a variable say string to a method
inside the same class.
Thanks,
Sushil
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