GitHub

java.lang.NullPointerException: Cannot invoke "forge.game.mana.Mana.toString()" because "this.mana" is null

"C:\Program Files\Java\jdk-24\bin\java.exe" -Xmx4096m -Dio.netty.tryReflectionSetAccessible=true -Dfile.encoding=UTF-8 -jar forge-gui-desktop-2.0.06-SNAPSHOT-jar-with-dependencies.jar Not sure what ...
GitHub

java.lang.NullPointerException: Cannot invoke "io.swagger.v3.oas.models.media.Schema.get$ref()" because "schema" is null

I have pushed a fix for the null pointer exception due to missing header de-referencing in #22613 to address issues I am having with the 7.18.0 upgrade. The oneOf string (format: date) | string ...
InfoWorld

Effective Java NullPointerException Handling

It doesn’t take much Java development experience to learn firsthand what the NullPointerException is about. In fact, one person has highlighted dealing with this as the number one mistake Java ...