How to Multiply Two Matrices in Java

I first learned about matrix in class 12th and I first wrote the program to multiply two matrices on my first semester of engineering, so, when I thought about this program, It brings a lot of memories from the past. It's actually a beginner exercise to develop coding logic, much like Fibonacci, prime, and palindrome check, but what make this program interesting is the use of the two-dimensional array to represent a matrix in Java.  Since matrix has both rows and columns, two-dimensional array just naturally fits into the requirement. Another important thing to solve this problem is to remember the rule of matrix multiplication in mathematics. If you don't remember the rule, just forget about how to solve this problem, unless you have access to Google. So, first, we'll refresh the rules of multiplication and then we'll look into coding aspect.

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