Question

How to create a two dimensional (2D) array in Java

Answer 1

public class MyClass {
    public static void main(String args[]) {
        int rows = 3;
        int cols = 4;
        int[][] array = new int[rows][cols];
  
        for(int i = 0; i < rows; i++) {
            for(int j = 0;j < cols; j++) {
                System.out.print(array[i][j] + " ");
            }
            System.out.println();
        }
    }
}
 
 
 
 
/*
run:
 
0 0 0 0 
0 0 0 0 
0 0 0 0 
 
*/

 

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Answer 2

public class MyClass {
    public static void main(String args[]) {
        int[][] array = {{1, 2, 3, 18}, {4, 5, 6, 27}, {7, 8, 9, 99}};
        
        int rows = array.length;
        int cols = array[0].length;
  
        for(int i = 0; i < rows; i++) {
            for(int j = 0;j < cols; j++) {
                System.out.print(array[i][j] + " ");
            }
            System.out.println();
        }
    }
}
 
 
 
 
/*
run:
 
1 2 3 18 
4 5 6 27 
7 8 9 99 
 
*/

 

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