toUpperCase()

[Trinity]

Hi,
Consider the following code:
String s = "HELLO";
System.out.println(s == s.toUpperCase());
I thought toUpperCase() will return a NEW object and so the output will be false. But the output is true !!
Can someone please explain !!

[Anonymous]

hi,
toUppercase(), toLowerCase() will return the same object if the result not change.
Mick

Originally posted by Trinity:
Hi,
Consider the following code:
String s = "HELLO";
System.out.println(s == s.toUpperCase());
I thought toUpperCase() will return a NEW object and so the output will be false. But the output is true !!
Can someone please explain !!

[Anonymous]

Hi trinity.Well you see,the methods of String class which look like modifying the string object(eg. toUpperCase(),trim() etc.) will do so ONLY IF CERTAIN CONDITIONS ARE MET.For example , toUppeCase() will return a new string object only if there is actually a lowercase char in the string.In your case there is not,so A REFERENCE TO THE ORIGINAL STRING OBJECT is returned.

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[Trinity]

Thanx guys ! I now understand !
I should've looked up the API !