How to Declare and Initialize two dimensional Array in Java

In this tutorial, we are going to see how to declare and Initialize two dimensional Array in Java.
 

Example 1: Program to Declare and Initialize two dimensional Array of integers in Java

public class Main {

    public static void main(String[] args) {

        int[][] arr2D = {
                {1, 2, 3},
                {4, 5, 6},
                {7, 8, 9}
        };
		
        int j, i = 0;

        for (int[] arr1D : arr2D) {
            j = 0;
            for (int val : arr1D) {
                System.out.println("[" + i + "][" + j + "] = " + val);
                j++;
            }
            i++;
        }
    }
}

Output:

[0][0] = 1
[0][1] = 2
[0][2] = 3
[1][0] = 4
[1][1] = 5
[1][2] = 6
[2][0] = 7
[2][1] = 8
[2][2] = 9

 

Example 2: Program to Declare and Initialize two dimensional Array of String in Java

public class Main {
	
 public static void main(String args[]) {
	 
  // Declare and initialize a 2D array
  String[][] names = { 
	     {"Alex", "Bob", "Thomas"}, 
	     {"Emily", "Jean", "James"}, 
	     {"Ali", "Yohan", "Camilia"} 
  };

  // Display the 2D array
  for (String[] arr: names) {
     for (String s: arr) {
         System.out.print(s + "\t");
     }
     System.out.println("\n");
  }
 }
}

Output:

Alex	Bob	Thomas	

Emily	Jean	James	

Ali	Yohan	Camilia

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