OutOfMemory Error java heap space

Question

I'm using this statement

//some code
int a[][]=new int[5000000][5000000];
//some code

and running it with command

java -mx512m Test

It is giving OutOFMemoryError: Java Heap space indicating the line number of the mentioned statement in the stacktrace

How do i solve this problem

Edit: I'm trying to solve a practice problem on codechef

Answer 1

You may need to consider an approach to your problem which requires less memory.

From Google Calculator (assuming a 64bit integer size):

(5 000 000^2) * 64 bits = 186 264.515 gigabytes