My code keeps giving me NullPointerException error

[linx2001]

closed, gotta find new method.

[KevinWorkman]

What line is throwing the NPE? What values are you dereferencing on that line? Which one is null? You can use a debugger or some print statements to figure out what's going on.

[eRaaaa]

But I'm using the primitive data type boolean 2D array and it should be automatically initialized to false.

Not 100%
You are using the syntax : new boolean[max][];
2D arrays in java are arrays of arrays! With new boolean[max][] the "unterlaying" arrays are not initialized (nobody knows how big should the array be - no size?!)

[linx2001]

Not 100%
You are using the syntax : new boolean[max][];
2D arrays in java are arrays of arrays! With new boolean[max][] the "unterlaying" arrays are not initialized (nobody knows how big should the array be - no size?!)

The problem is if I initialize the second part, then it will return heap memory space error since the number of inputs from the file I have to read in is extremely large. So I have to dynamically work at it. P.S. thanks for the response, that helped me understand better.

[quad64bit]

closed, gotta find new method.

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