CJ-22 : Check user name and password

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 string 

{

    public static void main(String args[])

    {

        String pass,user;

        try

        {

            DataInputStream x=new DataInputStream(System.in);

            System.out.println("Enter user name :");

            user=x.readLine();

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

            pass=x.readLine();

            if(user.equalsIgnoreCase("Priyada")&&pass.equals("java"))

                    {

                        System.out.println("LOGIN");

                    }

                    else

                       {

                              System.out.println("Invalid user name or password"); 

                       }     

        }

     catch(Exception e)

     {

     }

  }

}

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

Output : 

Here, I am giving the user name as "Priyada" and password as "java"    .

In this program , only password is case sensitive.

In the output , if we give the correct user name and password, a message will appear as "LOGIN".

Otherwise , "Invalid user name or password"will be displayed.

run:

Enter user name :

priyada

Enter password :

java

LOGIN

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

Note : 

We can give LOGIN table as shown below : 

The program to draw table like this , will follow soon.....

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 

CJ-19:Sorting array numbers in ascending order

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 ascending 

{

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

    {

        DataInputStream din=new DataInputStream(System.in);

        int t,i,j;

        int n=0;

        int result=0;

        int a[]=new int[10];

        System.out.println("Enter the limit :");

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

        System.out.println("Enter the numbers :");

        for(i=0;i<n;i++)

        {

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

        }

        for(i=0;i<n;i++)

        {

            for(j=0;j<n;j++)

            {

                if(a[i]<a[j])

                {

                    t=a[i];

                    a[i]=a[j];

                    a[j]=t;

                }

            }

        }

        System.out.println("The numbers in ascending orer is :");

        for(i=0;i<n;i++)

            System.out.println(a[i]);   

    }   

}

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

Enter the limit :

3

Enter the numbers :

5

7

2

The numbers in ascending order is :

2

5

7

CJ-18 : Store n numbers into an Array and print it

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 array 

{

   public static void main(String args[]) 

    {

        int a[]=new int[20];

        int i,n;

        try

        {

            DataInputStream x=new DataInputStream(System.in);

            System.out.println("Enter limit value for array");

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

            System.out.println("Enter array elements :");

            for(i=0;i<n;i++)

            {

                a[i]=Integer.parseInt(x.readLine());

            }

            System.out.println("array elements are :");

            for(i=0;i<n;i++)

            {

                System.out.println(a[i]);

            }

        }

        catch(Exception e)

        {

        }

    }      

}    

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

Enter limit value for array

5

Enter array elements :

1

2

3

4

5

array elements are :

1

2

3

4

5

CJ-17: Program to print a pattern

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.

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

Program to print a pattern as shown below :

*

* *

* * *

* * * * 

* * * * * 

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

import java.io.*;

public class nestedloop 

{

    public static void main(String args[])

    {

        int i,j;

        for(i=0;i<5;i++)

        {

            for(j=0;j<i;j++)

            {

                System.out.print("*");

                System.out.print("  ");

            }

            System.out.println("");

        }

    }  

}

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

*

* *

* * *

* * * * 

* * * * * 

CJ-16 : Numbers divisible by 7, and its sum(2)

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 div1
{
    public static void main(String args[])
    {
        int sum=0,ct=0,n,i;
        try
        {
            DataInputStream s= new DataInputStream(System.in);
            System.out.println("Enter the limit :");
            n=Integer.parseInt(s.readLine());
            System.out.println("Numbers divisible by 7 are :");
            for(i=0;i<n;i++)
            {
                if(i%7==0)
                {
                    System.out.println(i);
                    ct++;
                    sum=sum+i;
                }
            }
            System.out.println("Sum= "+sum);
            System.out.println("Total Numbers divisible by 7 is :"+ct);
        }
        catch(Exception e)
        {
        }
    }
}
=========================================================================
Output :

Enter the limit :

50

Numbers divisible by 7 are :

0
7
14
21
28
35
42
49
Sum= 196
Total Numbers divisible by 7 is :8

CJ-15:Numbers divisible by 7, and its sum(1)

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.*;
class div
{
public static void main(String args[])
{
   int sum=0,ct=0,n,i=0;
   try
   {
DataInputStream s=new DataInputStream(System.in);
System.out.println("Enter Limit :");
n=Integer.parseInt(s.readLine());
System.out.println("Numbers divisible by 7 are :");
do
{
   if(i%7==0)
   {
System.out.println(i);
ct++;
sum=sum+i;
   }
   i++;
}
while(i<=n);
System.out.println("Sum = "+sum);
System.out.println("Total Numbers divisible by 7 is : "+ct);
    }
    catch(Exception e)
    {
    }
}
}   

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

Output :

Enter Limit:

50

Numbers divisible by 7 are :

0

7

14

21

28

35

42

49
Sum = 196

Total Numbers divisible by 7 is : 8