Multi Dimensional Arrays in Java
Multi Dimensional arrays in Java can be termed as arrays of arrays. We can create two-dimensional, three-dimensional, four-dimensional or n-dimensional arrays in Java. Its quite simple to create arrays in Java, yet more the dimensions more the confusion. Let us see a quick tutorial. In this tutorial I’m going to take three-dimensional array as example.
Tutorial
package com.javaindetail.multidimensional;
public class MultiDimensionalArray {
public static void main(String[] args) {
// One Dimensional Arrays
int[] one = { 1, 2, 3 };
int[] two = { 4, 5, 6 };
int[] three = { 7, 8, 9 };
int[] four = { 1, 1, 1 };
int[] five = { 1, 4, 5 };
int[] six = { 6, 7, 8 };
int[] seven = { 9, 2, 1 };
int[] eight = { 2, 2, 4 };
int[] nine = { 2, 2, 7 };
// Multi Dimensional Arrays in Java
// Two Dimensional Arrays
int[][] twoDimenOne = { one, two, three };
int[][] twoDimenTwo = { four, five, six };
int[][] twoDImenThree = { seven, eight, nine };
// Three Dimensional Array
int[][][] threeDimen = { twoDimenOne, twoDimenTwo, twoDImenThree };
// printing one dimensional array
System.out.println("One Dimensional Array");
System.out.print("[");
for (int i = 0; i < one.length; i++) {
System.out.print(one[i] + " ");
}
System.out.println("]");
// printing two dimensional array
System.out.println("Two Dimensional Array");
for (int i = 0; i < twoDimenOne.length; i++) {
System.out.print("[");
for (int j = 0; j < twoDimenOne[i].length; j++) {
System.out.print(twoDimenOne[i][j] + " ");
}
System.out.print("]");
System.out.println();
}
// printing three dimensional array
System.out.println("Three Dimensional Array");
for (int i = 0; i < threeDimen.length; i++) {
System.out.print("[");
for (int j = 0; j < threeDimen[i].length; j++) {
System.out.print("[");
for (int k = 0; k < threeDimen[i][j].length; k++) {
System.out.print(threeDimen[i][j][k] + " ");
}
System.out.print("]");
}
System.out.print("]");
System.out.println();
}
}
}
Output
One Dimensional Array
[1 2 3 ]
Two Dimensional Array
[1 2 3 ]
[4 5 6 ]
[7 8 9 ]
Three Dimensional Array
[[1 2 3 ][4 5 6 ][7 8 9 ]]
[[1 1 1 ][1 4 5 ][6 7 8 ]]
[[9 2 1 ][2 2 4 ][2 2 7 ]]
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