Exception in thread "main" java.lang.NullPointerException: Cannot read the array length because "<local2>" is null

This error message indicates that you are trying to read the length of an array that has not been initialized or is null. The variable "<local2>" is the array that is causing the error.

To fix this error, you need to make sure that the array is properly initialized before trying to access its length. You can do this by using the new keyword to create a new instance of the array with a specific size, or by assigning an existing array to the variable.

For example, if you want to create a new array of integers with a length of 10, you can do the following:

int[] myArray = new int[10];

This will create a new array with 10 elements, which you can then access and modify as needed.

If you are still having trouble with this error, you may need to check your code to make sure that all variables are properly initialized and that there are no other issues that could be causing the problem.