Array of Arrays Demo and Example

package com.sun.example;
 
/*
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 * This software is provided "AS IS," without a warranty of any kind. ALL
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public class ArrayOfArraysDemo2 {
    public static void main(String[] args) {
	int[][] aMatrix = new int[4][];
 
	// populate matrix
	for (int i = 0; i < aMatrix.length; i++) {
	    aMatrix[i] = new int[5]; // create sub-array
	    for (int j = 0; j < aMatrix[i].length; j++) {
		aMatrix[i][j] = i + j;
	    }
	}
 
	// print matrix
	for (int i = 0; i < aMatrix.length; i++) {
	    for (int j = 0; j < aMatrix[i].length; j++) {
		System.out.print(aMatrix[i][j] + " ");
	    }
	    System.out.println();
	}
    }
}