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copy subject

2 replies on 1 page. Most recent reply: Jan 22, 2004 12:22 PM by Jonathon Brozny

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black

Posts: 2
Nickname: blackscorp
Registered: Jan, 2004

copy subject

Posted: Jan 22, 2004 11:50 AM

class something {
.
.
void methode1{
Object object=new Object();
.
.
.
callmeth(object);
.
.
}//end of methode1

void callmeth(Object object) {
Object copyObject=new Object();

copyObject=object;
.
.
.
copyObject.variable=12;
.
.
System.out.print(copyObject==object);
}//end of callmeth
}//end of class

why callmethode(...) prints true.I mean why copyObject is the same with object eventhought i changed copyObject.How do i fix this.Sorry for bad grammar...

Jonathon Brozny

Posts: 24
Nickname: jonathon
Registered: Oct, 2003

Re: copy subject

Posted: Jan 22, 2004 12:21 PM

You did make a new object, but then you discarded the new object references and referenced the first object again when you went.

Object copyObject=new Object();

now you just have 2 references to the same object.

Jonathon Brozny

Posts: 24
Nickname: jonathon
Registered: Oct, 2003

Re: copy subject

Posted: Jan 22, 2004 12:22 PM

Right, that was good. that line should have been

copyObject=object;

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