Java Basic Program


1.  Addition Of  Two Number

 import java.util.*;

public class Addition

{

public static void main(String[] args)

{

int a,b,sum;

Scanner s1=new Scanner(System.in);

System.out.println("Enter value of a:- ");

a=s1.nextInt();

System.out.println("Enter value of b:- ");

b=s1.nextInt();

sum=a+b;

System.out.println("Addition of two number is :- "+sum);

}

}


2. Even Or Odd Program

import java.util.*;

public class evenodd

{

public static void main(String[] args)

{

int no;

Scanner s1=new Scanner(System.in);

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

no=s1.nextInt();

if(no%2==0)

{

System.out.println("Number is even");

}

else

{

System.out.println("Number is odd");

}

}

}


3. Multiplication Of Two Number

import java.util.*;

public class multiply

{

public static void main(String[] args)

{

int a,b,sum;

Scanner s1=new Scanner(System.in);

System.out.println("Enter value of a:- ");

a=s1.nextInt();

System.out.println("Enter value of b:- ");

b=s1.nextInt();

sum=a*b;

System.out.println("Multiplication of " +a + " and " + b + " is:-"  +sum);

}

}

4. Simple Interest Program

import java.util.*;

public class interest

{

public static void main(String[] args)

{

int p ,n;

float r,inte;

Scanner s1=new Scanner(System.in);

System.out.println("Enter the principal:- ");

p=s1.nextInt();

System.out.println("Enter the Rate of Interest:- ");

r=s1.nextFloat();

System.out.println("Enter the Time Period:- ");

n=s1.nextInt();

//Interest formula :- Interest=PRN/100

inte=(p * r * n)/100;

System.out.println("Simple Interest is: "+inte);

}

}

5. Leap Year Program

import java.util.*;

public class leapyear

{

public static void main(String[] args)

{

int year;

Scanner s1= new Scanner(System.in);

System.out.println("Enter year:- ");

year=s1.nextInt();

boolean leapyear=false;

if(year%4==0)

{

/* if (year%100==0)

{

if (year%400==0)

{

leapyear=true;

}

else

{

leapyear=false;

}

leapyear=true;

}

else

{

leapyear=false;

}

leapyear=true;*/

}

else

{

leapyear=false;

}

if(leapyear==true)

{

System.out.println(year +" is a leap year");

}

else

{

System.out.println(year +" is not a leap year");

}

}

}

6. Power Program

import java.util.*;

public class power

{

public static void main(String[] args)

{

int no,pow,i;

int result=1;

Scanner s1=new Scanner(System.in);

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

no=s1.nextInt();

System.out.println("Enter Power of Number:- ");

pow=s1.nextInt();

for(i=1;i<=pow;i++)

{

result=result*no;

}

System.out.println(no+"^"+pow+"="+result);

}

}

7. Complex Number Program

import java.util.*;

public class complexnumber

{

double rear , img;

complexnumber(double r,double i)

{

this.rear=r;

this.img=i;

}

public static complexnumber sum(complexnumber c1,complexnumber c2)

{

complexnumber temp=new complexnumber(0,0);

temp.rear=c1.rear+c2.rear;

temp.img=c1.img+c2.img;

return temp;

}

public static void main(String[]  args)

{

complexnumber c1=new complexnumber(2.2,4);

complexnumber c2=new complexnumber(4.5,6.2);

complexnumber temp=sum(c1,c2);

System.out.println(temp.rear + "+" +temp.img+"i");

}

}

8. Constant and Vowel Program

import java.util.*;

public class volveconstant

{

public static void main(String[] args)

{

char ch;

boolean vowel=false;

Scanner s1=new Scanner(System.in);

System.out.println("Enter Character :- ");

ch=s1.next().charAt(0);

switch(ch)

{

case 'a':

vowel=true;

break;

case 'e':

vowel=true;

break;

case 'i':

vowel=true;

break;

case 'o':

vowel=true;

break;

case 'u':

vowel=true;

break;

default:

vowel=false;

break;

}

if(vowel==true)

{

System.out.println(ch + "  is a vowel");

}

else

{

System.out.println(ch+ "  is a consonant");

}

}

}

                                             The End

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Aarsh Prajapati

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