If statement not comparing JInputDialog value

Question

So I have an If Statement. It's set to compare a value taken fron user input using JOptionPane.showInputDialog. But if the values are the same, it doesn't do anything...

Example: The user has to enter the value 4. When the Input Dialog appears, the user types 4. Then, it's supposed to win, because if userInput = 4 {win}. But even if the userInput is 4, nothing will happen...

I thik I'm not explaining very well...

EDIT: Ok, I found the problem... I'm stupid... The problem was I declared another int for the num inside the method, so it wasn't reachable outside the method...

Pre-emptive [How do I compare strings in Java?](http://stackoverflow.com/questions/513832/how-do-i-compare-strings-in-java) — Sotirios Delimanolis, Aug 27 '13 at 14:35

score 0 · Answer 1 · answered Aug 27 '13 at 14:38

0

It's important to remember that the input dialog takes strings so the number that you enter will actually be stored in memory as a String object.

int intInput = Integer.parseInt(stringInput);

That will parse the user's input and store as an integer. It's probably best to check that it's possible to parse the input before actually parsing so that the program doesn't crash/bug out.

EDIT: You could also do this:

    if(userInput.equals("4")) { 
      JOptionPane.showMessageDialog(null, "win"); 
    }

answered Aug 27 '13 at 14:38

Ben Dale

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Yes, I have converted the String to an Integer, so that's not the problem... Also, the number it's not 4, that was for the example. The number is randomly generated between 0 and 9 – José María Aug 27 '13 at 15:05
Then you would need to generate the random number, store the number in memory and then check the user's input against that number. – Ben Dale Aug 27 '13 at 15:26

score 0 · Answer 2 · answered Aug 28 '13 at 13:33

0

Ok, I found the problem... I'm stupid... The problem was I declared another int for the num inside the method, so it wasn't reachable outside the method...

answered Aug 28 '13 at 13:33

José María

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If statement not comparing JInputDialog value

2 Answers2