Problem solution for the error message: java.long.NullPointerException
- In the case of the Java programming, the error "java appears to be particularly.long.NullPointerException" again and again in numerous variations.
- This is an error that the Compiler cannot detect, so that it occurs only when you Run.
- The Script tries to access an object that contains the value of Zero (0). In order to solve the Problem, you need to initialize the reference, either with a reference or with the new Operator.
To fix the error message
- Check whether your object is created. If this is not the case, you have to create it with the command-syntax "example: object name = new object(variable);".
- With the Debug mode, you can check line by line your code and intermediate results. Make sure that you overwrite your existing object, or a NULL value is stored. This leads to the fact that the object is available, and a further object commands that trigger the error.
- Tip: If you change your object often, get in the habit, on an If-query ("if (object != NULL) {...}") to check your object before and after fundamental changes.
More tips can be found on our Java themes page.
