About passing instances of objects to other classes

Asked Dec 18 '13 at 19:09

Active Dec 18 '13 at 19:09

Viewed 26 times

Let's say I have two classes. Class1 and Class2.

The constructor of Class2 looks like this:

public Class2{

Class1 c;

    public Class2(Class1 c){
        this.c = c;
    }

}

When creating an instance of Class2 inside the code of Class1, we pass the existing instance of Class1 to Class2. This is from Class1:

Class2 c2 = new Class2(this);

Inside Class2, I want to manipulate the variables inside the instance of Class1 that's been passed to Class2.

My question is:

If I make changes to the c (the instance of Class1 that's been passed to Class2), am I affecting the original instance of Class1, or just a copy?

asked Dec 18 '13 at 19:09

AvivC

2

`c` is a **reference**... – Oliver Charlesworth Dec 18 '13 at 19:10
2

You are affecting the original since objects are passed by reference. – Vincent Ramdhanie Dec 18 '13 at 19:12
1

http://stackoverflow.com/questions/40480/is-java-pass-by-reference – Anirban Nag 'tintinmj' Dec 18 '13 at 19:15

0 Answers0