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Gamer Jole

MapEditor_2 cant open.

Asked by Gamer Jole

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Gamer Jole    1

Gamer Jole
Posted

Hello,

I tried to make my own custom map but as I opened the MapEditor_2 Executable Jar File, it just wouldn't open or would make an error message (I linked the 2 also 1 is in German). I will list the following things I tried:

  • Deleting the file and copying one from the example folder
  • downloading jarfix (it just gets rid of the error message)
  • downloading JDK Development Kit 23.0.1 (it just gets rid of the error message)
  • trying to open it with javaw
  • updating java
  • deinstalling and reinstalling java
  • done lots of stuff with cdm command 
  • restarting my pc

I did eventually ask ChatGPT to help and it found out what was wrong, I will send what ChatGPT sent:

"Analysis:

  1. NullPointerException: This indicates that a null value is being accessed where an object is expected. Specifically:

    • The java.util.List.get(int) method is returning null.
    • The returned null is being used to call getWidth() on an Image object.

  2. Context in Code:

    • The issue occurs in the GamePanel class, specifically at line 395 in its constructor.
    • The problem propagates from the GamePanel initialization to the main class's init method at line 8 and its main method at line 13."

 

I also have the same layout of the folders like Lukasz in his video on custom maps (I also copied the example custom map folder). I can't fix this issue on my own so I'm asking for anyone to help me with this.

image.png

image.png

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Gamer Jole    1

Gamer Jole
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39 minutes ago, Łukasz Jakowski said:

You need to uninstall your current version of Java, then download the latest version and install it.

Hello Lukasz,

I tried uninstalling my current version of Java and downloading and installing the latest but it still isn't working, it still gives me the 2 error messages. Do you have any more tips?

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