Print all the String elements using DDA

Write a program to input and store String elements in a double dimensional array of size  3 x 4  and Print all the String elements.

import java.util.*;

class  DD

{

    public static void main(String arg[])

    {

        String[][]  nm = new String[3][4];

                 

        Scanner sk = new Scanner(System.in); 

    

        System.out.println("Enter the names  ");

        

        for(int i=0 ; i<3 ; i++)

        {

            for(int j=0 ; j<4 ; j++)

            {

                nm[i][j] = sk.nextLine();

            }

        }

        

        System.out.println("The output is : ") ; 

        

        for(int i=0 ; i<3 ; i++)

        {

            for(int j=0 ; j<4 ; j++)

            {

               System.out.print(nm[i][j] + "  ") ;  

            }

            System.out.println() ; 

        }          

    

    }

}

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Find the sum of diagonal elements in Java

Write a program to input and store integer elements in a double dimensional array of size  3 x 3  and find the sum of diagonal elements. 

import java.util.*;

class DDA

{

    public static void main(String arg[])

    {

        int[][] num = new int[3][3];

       

        int x = 0 ;

       

        Scanner sk = new Scanner(System.in);

   

        System.out.println("Enter all the values ");

       

        for(int i=0 ; i<3 ; i++)

        {

            for(int j=0 ; j<3 ; j++)

            {

                num[i][j] = sk.nextInt();

            }

        }

       

        x = num[0][0] + num[1][1] + num[2][2] + num[0][2] + num[2][0] ; 

       

        System.out.println("The sum of the diagonal elements is : " +x) ;

   

    }

}

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Find the sum of all the elements in DDA

Write a program to input and store integer elements in a double dimensional array of size  3 x 4  and find the sum of all the elements.

import java.util.*;

class DDA

{

    public static void main(String arg[])

    {

        int[][] num = new int[3][4];

       

        int x = 0 ;

       

        Scanner sk = new Scanner(System.in);

   

        System.out.println("Enter all the values ");

       

        for(int i=0 ; i<3 ; i++)

        {

            for(int j=0 ; j<4 ; j++)

            {

                num[i][j] = sk.nextInt();

            }

        }

       

        for(int i=0 ; i<3 ; i++)

        {

            for(int j=0 ; j<4 ; j++)

            {

                x = x + num[i][j] ;

            }

        }   

       

        System.out.println("The sum of all the elements is : " +x) ;

   

    }

}

Print all the integer elements in DDA

Write a program to input and store integer elements in a double dimensional array of size  3 x 4  and Print all the integer elements.

                                               // User Defined

import java.util.*;

class  DDA

{

    public static void main(String args[])

    {

        int[][] num = new int[3][4];

        Scanner sk=new Scanner(System.in) ;         

        System.out.println("Enter ur Value :") ;   

      

        // This loop is used to store the values in the array index 

        for(int i=0 ; i<3 ; i++)                     //Row

        {

            for(int j=0 ; j<4 ; j++)                // Column

            {

                num[i][j] = sk.nextInt();

            }         

        }     

 

         System.out.println(" The output is  :") ;        

        for(int i=0 ; i<3 ; i++)

        {

            for(int j=0 ; j<4 ; j++)

            {

                System.out.print(num[i][j] + "  ");      // Use print instead of println

            }                 //use double quotation for space between each number   

            System.out.println();             // This println() is use to change of row

        }           

    }

}

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Basic concept of Double Dimensional Array

Double Dimensional arrays is consists of two subscripts : one for the row and other for the column. 

The first subscript is always the row subscript and second is column subscript.   

class  Array2D

{

    public static void main(String args[])

    { 

        int[][] A = new int[2][3] ;

        A[0][1] = 11 ;

        A[0][1] = 22 ;

        A[0][2] = 33 ;

        A[1][0] = 44 ;

        A[1][1] = 55 ;

        A[1][2] = 66 ;           

        System.out.println(" The value is " + A[0][2]) ;

        System.out.println(" The value is " + A[1][1]) ;

    }

}                     

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// Two Dimensional arrays is consists of two subscripts : one for the row and other for the column. 

class  DDA

{

    public static void main(String args[])

    {

        int[][] A = {{10,20,30} , {40,50,60}};         

        System.out.println(" The value is " + A[0][2]) ;

        System.out.println(" The value is " + A[1][1]) ;

    }

} 

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