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Strings in Java

Posted on 2004-09-16
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Last Modified: 2010-03-31
I have read that if I use the == operator to compare two string objects,it compares the addresses while the "equals" operator would compare only the contents.
Is it true?

To the following code:

class n
{
public static void main(String art[])
{
String s1="HAARHUIS";
String s2="HAARHUIS";
if(s1==s2)
System.out.println("They are the same");
if(s1.equals(s2))
System.out.println("They are still the same");
}
}

I get:
They are the same
They are still the same
0
Comment
Question by:perfect_tranquility
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5 Comments
 
LVL 86

Expert Comment

by:CEHJ
ID: 12079967
>>Is it true?

Yes ;-)
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LVL 86

Accepted Solution

by:
CEHJ earned 750 total points
ID: 12079978
You get that output because the reference happens to be the same. Try this instead:

String s1="HAARHUIS";
String s2= new String("HAARHUIS");
0
 

Author Comment

by:perfect_tranquility
ID: 12080011
CEHJ,

Bingo!

the new operator forces a new reference string to be created instead of using the old one.
0
 
LVL 86

Expert Comment

by:CEHJ
ID: 12080026
>>the new operator forces a new reference string to be created instead of using the old one.

Spot on ;-)
0
 

Author Comment

by:perfect_tranquility
ID: 12080029
I am happy I am getting the answers.I will be even happier if the answers come with a little bit of more explanation.
Thanks for the support
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