CJ-21 : Program to enter Student Details

Type the programs in NOTEPAD or DOS prompt itself, for Consol Application.
Type in NETBEANS or ECLIPSE for Window Application.
Here after , I am just typing the programs only..to know more about it , refer

Introduction to JAVA 

before doing any JAVA Programs.

***********************************************************************************************
Refer Enter student details using 2 functions also.
***********************************************************************************************

import java.io.*;

public class student 

{

    public static void main(String args[])

    {

        int rno;

        String name,branch;

        try

        {

            DataInputStream x=new DataInputStream(System.in);

            System.out.println("Enter Roll Number :");

            rno=Integer.parseInt(x.readLine());

            System.out.println("Enter Student Name :");

            name=x.readLine();

            System.out.println("Enter Branch :");

            branch=x.readLine();

            System.out.println("==========================");

            System.out.println("Roll Number ="+rno);

            System.out.println("Name ="+name);

            System.out.println("Branch ="+branch);

        }

        catch(Exception e)

        {

        }

        }

 }

=========================================================================
Output : 

Enter Roll Number :

1

Enter Student Name :

Priyada

Enter Branch :

Computer Science

==========================

Roll Number =1

Name =Priyada

Branch =Computer Science

CJ-20 : Matrix addition

Type the programs in NOTEPAD or DOS prompt itself, for Consol Application.
Type in NETBEANS or ECLIPSE for Window Application.
Here after , I am just typing the programs only..to know more about it , refer

Introduction to JAVA 

before doing any JAVA Programs.

***********************************************************************************************

import java.io.*;

public class matrixsum 

{

    public static void main(String args[])throws Exception

    {

        DataInputStream din=new DataInputStream(System.in);

        int twod[][]=new int[10][10];

        int twod1[][]=new int[10][10];

        int sum[][]=new int[10][10];

        int i,j,r,c;

        System.out.println("Enter the number of rows and column of the matrix");

        r=Integer.parseInt(din.readLine());

        c=Integer.parseInt(din.readLine());

        System.out.println("Enter the number of first matrix");

        for(i=0;i<r;i++)

        {

            for(j=0;j<c;j++)

            {

                twod[i][j]=Integer.parseInt(din.readLine());

            }

        }

        System.out.println("The first matrix are :");

        for(i=0;i<r;i++)

        {

            for(j=0;j<c;j++)

            {

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

            }

            System.out.println(); 

        }

        System.out.println("Enter the number of second matrix");

        for(i=0;i<r;i++)

        {

            for(j=0;j<c;j++)

            {

                twod1[i][j]=Integer.parseInt(din.readLine());

            }

        }

        System.out.println("The second matrix are :");

        for(i=0;i<r;i++)

        {

            for(j=0;j<c;j++)

            {

                System.out.print(twod1[i][j]+" ");

            }

            System.out.println(); 

        }

        System.out.println("The sum of the matrix are :");

        for(i=0;i<r;i++)

        {

            for(j=0;j<c;j++)

            {

                sum[i][j]=twod[i][j]+twod1[i][j];

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

            }

            System.out.println();

        }

    }

}

=========================================================================
Output : 

Enter the number of rows and column of the matrix

2

2

Enter the number of first matrix

2

3

4

5

The first matrix are :

2 3 

4 5 

Enter the number of second matrix

5

4

1

2

The second matrix are :

5 4 

1 2 

The sum of the matrix are :

7 7 

5 7