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Message:

string thingeys

Posted by alex on October 31, 2001 at 11:36 PM

dear hiran.

hope this will answer ur ques. :)

case 1 : String s = new String();
u're creating a string which is empty but not null.

case 2 : String s = "";
it's the same as case 1. The string is empty but it's not null.

case 3 : String s = null;
in this case the string is initialized as null.

so for u, since u wanna check whether the returned string is null or not,
u better initialized it as the third case "String s = null". if u initialize the string using the first two ways, the checking part would be pointless.

or, u can use the first two ways. but check for the 'length'
instead.

this kinda initialization thingeys is analoous to set theory.
where an empty set is not the same as a null set.