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Java - problem with IF Statement

Posted on 2012-04-05
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Last Modified: 2012-06-21
I am having issues with the below piece of code.  I am using eclipse.  output is equal to "" but it does evaluate to true thereby not setting the value accordingly.  Any idea?

if(output == "")
{
    output = "Invalid characters entered."; 
}

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Question by:CipherIS
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5 Comments
 
LVL 29

Expert Comment

by:QPR
ID: 37814905
trim your variable in case it isn't exactly an empy string e.g " "
If it's still not working then debug your code and step through to make sure you are actually reaching this step
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Author Comment

by:CipherIS
ID: 37814935
Nope didn't fix it.  Does not go in the If Statement.  I've attached a snapshot.
output.jpg
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LVL 29

Expert Comment

by:QPR
ID: 37814940
Well if it never reaches the if statement then there is something up with the logic. Can you step through the code and see why it doesn't get there?
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Author Comment

by:CipherIS
ID: 37814944
i resolved it.

Ans is output.length == 0
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Accepted Solution

by:
CPColin earned 2000 total points
ID: 37814953
In the future, be sure to use String.equals() to compare a string. Using == to compare strings will not work.
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