class Array2D {
    public static void main(String[] args){
      
        // Declaring 2-D array with 2 rows
        int arr[][] = new int[2][];

        // Making the above array Jagged
        arr[0] = new int[3];
        arr[1] = new int[2];

        // Initializing array
        int count = 0;
        for (int i = 0; i < arr.length; i++)
            for (int j = 0; j < arr[i].length; j++)
                arr[i][j] = count++;

      	// Printing the Array Elements
        for (int i = 0; i < arr.length; i++) {
            for (int j = 0; j < arr[i].length; j++)
                System.out.print(arr[i][j] + " ");
            System.out.println();
        }
    }
}

// Method 1
int arr_name[][] = new int[][]  { 
                                  new int[] {10, 20, 30 ,40},
                                   new int[] {50, 60, 70, 80, 90, 100},
                                   new int[] {110, 120}
                              }; 

                                       

// Method 2                                                                    
int[][] arr_name = { 
                                new int[] {10, 20, 30 ,40},
                                 new int[] {50, 60, 70, 80, 90, 100},
                                 new int[] {110, 120}
                             };     

                           

// Method 3                              
int[][] arr_name = {
                                  {10, 20, 30 ,40},
                                  {50, 60, 70, 80, 90, 100},
                                  {110, 120}
                              };