Java Multidimensional Arrays
Multidimensional Arrays are an Array of Arrays. Each elements of an M-D array is an array itself. Marks in the previous example was a 1-D array.
Multidimensional 2-D Array
A 2-D array can be created as follows:
int [][] flats = new int[2][3] //A 2-D array of 2 rows + 3 columnsWe can add elements to this array as follows
flats[0][0] = 100
flats[0][1] = 101
flats[0][2] = 102
// … & so on!This 2-D array can be visualized as follows:
Similarly, a 3-D array can be created as follows:
String[][][] arr = new String [2][3][4]Example
package com.company;
public class multi_dim_arrays {
public static void main(String[] args) {
int [] marks; // A 1-D Array
int [][] flats; // A 2-D Array
flats = new int [2][3];
flats[0][0] = 101;
flats[0][1] = 102;
flats[0][2] = 103;
flats[1][0] = 201;
flats[1][1] = 202;
flats[1][2] = 203;
// Displaying the 2-D Array (for loop)
System.out.println("Printing a 2-D array using for loop");
for(int i=0;i<flats.length;i++){
for(int j=0;j<flats[i].length;j++) {
System.out.print(flats[i][j]);
System.out.print(" ");
}
System.out.println("");
}
}
}
Output
Printing a 2-D array using for loop
101 102 103
201 202 203
101 102 103
201 202 203