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Java Java Objects Creating the MVP Current Progress

Posted by Harrison Fabian
Harrison Fabian
692 Points

What does this mean I did wrong??

When i run my program it says:

Exception in thread "main" java.lang.NullPointerException at Game.getCurrentProgress(Game.java:24) and there are like 3 more things kind of like the above that are listed afterwards, I tried looking it up but it just says that the program cannot find the files even though they are loaded up simultaneously and this should not be happening

1 Answer

Katie Wood
Katie Wood
19,141 Points
Katie Wood
Katie Wood
19,141 Points

NullPointerException means there's something at that line in the code that it isn't able to find a reference for (returned null when it needs to not be null).

Here is some documentation for that: https://docs.oracle.com/javase/7/docs/api/java/lang/NullPointerException.html

Without your code, I can't really say exactly what it isn't finding, but that "(Game.java:24)" is your best clue - it's telling you which file and which line the error is happening on. I would start by seeing what it's trying to do on that line (and any other lines listed on your error messages), and then check to make sure variables are being spelled and assigned correctly, etc.

Good luck!