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Adding InputHandler to game throws a java.lang.nullPointerException  RSS feed

 
Adam Miszczak
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Hi!

I have a game, and I just added a InputHandler class. The problem is that whenever I run my game, I get a java.lang.nullPointerException in my Player class where the if statement for checking if the key is pressed.

Game



InputHandler



Player



I have tried lots of things but I just cannot figure this out. It's probably something that I just overlooked and can't find. Help is appreciated. Thanks!

This is the error message:

 
fred rosenberger
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I don't see where you ever create an InputHandler.
 
Adam Miszczak
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I'm not really sure what you mean by creating it? I have an InputHandler class.
 
fred rosenberger
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Yes, you have the class defined...but that's like saying "I drafted the blueprint..what do you mean I don't have a house?". Unless you create an InputHandler object, you don't have one. You need to call it's constructor.

Put it another way...what do you think your variable 'input' holds? You declare it:

you pass it to your player class:

you assign it to a another variable named input:

and you try to use it:

Where do you assign it a value?
 
Adam Miszczak
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Ok I understand now. Thanks!
 
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