Category Archives: Java Number Programs

Java Number Programs

Program to check Harshad Number In Java

In this tutorial, we will learn to create a Java Program to check Harshad Numbers in Java using Java programming.

Prerequisites

Before starting with this tutorial we assume that you are best aware of the following Java programming topics:

Java Operators.
Basic Input and Output function in Java.
Class and Object in Java.
Basic Java programming.
If-else statements in Java.
For loop in Java.

Harshad number

Harshad number is a number that if it is divisible by the sum of its digit.

For example:=> 40, Sum of digit is (4 +0 = 4). So 40 is divisible by 4. So, 40 is a Harshad number.

Program to check Harshad Number in Java

In this program we would find given number is a Harshad number or not .first of we would take a value from user and find the Harshad number.let’s have a look at the code.

// java program to find Harsh number.
import java.util.Scanner;
public class Harshad  
{  
    public static void main(String[] args) 
    {  
// declaring avriables and taking value form user..
      Scanner sc = new Scanner(System.in);
      System.out.print("Enter any number  ");
      int number = sc.nextInt();
      int remainder = 0, sum = 0, no;  

        no = number;  
          
        //Calculatings sum of digits  
        while(number > 0)
        {  
            remainder = number%10;  
            sum = sum + remainder;  
            number = number/10;  
        }  
          
        //Checking number is divisible by sum of digits or not
        if(no%sum == 0)  
            System.out.println(no + " is a harshad number");  
        else  
            System.out.println(no + " is not a harshad number");  
    }  
}

// java program to find Harsh number.

import java.util.Scanner;

public class Harshad

{

public static void main(String[] args)

{

// declaring avriables and taking value form user..

Scanner sc = new Scanner(System.in);

System.out.print("Enter any number ");

int number = sc.nextInt();

int remainder = 0, sum = 0, no;

no = number;

//Calculatings sum of digits

while(number > 0)

{

remainder = number%10;

sum = sum + remainder;

number = number/10;

}

//Checking number is divisible by sum of digits or not

if(no%sum == 0)

System.out.println(no + " is a harshad number");

else

System.out.println(no + " is not a harshad number");

}

Output

Harshad Number.

Not a Harshad Number.

In the above program, we have first declared and initialized a set variables required in the program.

no and number= it will hold entered number.
remainder = it will hold remainder of values.
sum = it will hold sum of digit

After that we take a number from user and find given number is a Harshad number or not

Algorithm

First of all we take and initialize variable number.
Duplicate the number in variable no.
check Condition while number is greater than 0, then find remainder of number by dividing number with 10.

Add remainder to a variable sum=>(sum = sum + remainder).
Divide number by 10.
Repeat the steps 3 to 5,

If no divide sum completely, then number is a Harshad number. Else, given number is not a Harshad number.

Program to check Pronic Number in Java

In this tutorial, we will learn to create a Java Program to check Pronic Numbers in Java using Java programming.

Prerequisites

Before starting with this tutorial we assume that you are best aware of the following Java programming topics:

Java Operators.
Basic Input and Output function in Java.
Class and Object in Java.
Basic Java programming.
If-else statements in Java.
For loop in Java.

What is Pronic or Heteromecic number?

A number is called a Pronic or Heterimecic if product or two consecutive number giver the number itself.

Example :

1) 42 => 6 * 7 => gives 42 6 and 7 are consecutive number.

2) 50 => 10 * 5 =: gives 50 but 5 and 10 are not consecutive number.

Program to check Pronic Number in Java

In this our program we will find given number is a Pronic number or not in using java programming. We would first declared and initialized the required variables. Next, we would prompt user to input the a number.Later we find number is Pronic number or not let’s have a look at the code.

// Java program to find Pronic number
import java.util.Scanner;

public class Pronic {

    public static void main(String args[])
       {
        // Declaring and taking values orm user..
        Scanner sc = new Scanner(System.in);
        System.out.print("please enter a number : ");
        int number = sc.nextInt();
        int result = 0;
       // calculating pronic number
        for(int i=0; i<number; i++)
        {
            if(i*(i+1) == number)
            {
                result = 1;
                break;
            }
        }
        // If condition became ture the number is a pronic number 
        if(result == 1)
            System.out.println("Number is a Pronic Number."+number);
        else
            System.out.println("Number is Not a Pronic Number."+number);      
    }
}

// Java program to find Pronic number

import java.util.Scanner;

public class Pronic {

public static void main(String args[])

{

// Declaring and taking values orm user..

Scanner sc = new Scanner(System.in);

System.out.print("please enter a number : ");

int number = sc.nextInt();

int result = 0;

// calculating pronic number

for(int i=0; i<number; i++)

{

if(i*(i+1) == number)

{

result = 1;

break;

}

// If condition became ture the number is a pronic number

if(result == 1)

System.out.println("Number is a Pronic Number."+number);

else

System.out.println("Number is Not a Pronic Number."+number);

}

Output

Pronic Number.

Not a Pronic Number.

In the above program, we have first declared and initialized a set variables required in the program.

number= it will hold entered number.
result= it will hold result.
i= i for iteration .

After declaring variables in the next statement user will be prompted to enter a value and which will be assigned to variable ‘number’.

And after that we calculate the product of two consecutive number with in the number gives the number itself then the number is a pronic.

So the given number called Pronic if “sum of its two consecutive number gives the number” Called Pronic

If not then the number is not a Pronic.

Program to check Disarium Number In Java

In this tutorial, we will learn to create a Java Program to check Disarium Numbers in Java using Java programming.

Prerequisites

Before starting with this tutorial we assume that you are best aware of the following Java programming topics:

Java Operators.
Basic Input and Output function in Java.
Class and Object in Java.
Basic Java programming.
If-else statements in Java.
For loop in Java.
Inbuilt functions.

What is In Disarium Numbers?

A number is called Disarium number if sum of its power at the positions from left to right is equal to the number.

Example:
1¹ + 3² + 5³ = 1 + 9 + 125 = 135

Program to check Disarium Number In Java

In this program we will find given number is a Disurium number or not in using java programming. We would first declared and initialized the required variables. Next, we would prompt user to input the a number.Later we find number is Sisarium number or not let’s have a look at the code.

//Java program to find Disarium Number..
import java.util.Scanner;

public class Disarium{ 

    public static void main(String args[])
        {
            //Declaring variable and taking value from user...
            Scanner sc = new Scanner(System.in);
            System.out.print("Please enter a number : ");
            int number = sc.nextInt();
            int temp = number, a = 0, sum = 0;
            String s = Integer.toString(number);  
            int l = s.length();  
            // checking condition for Disauram number 
            while(temp>0)
            {
                a = temp % 10;  
                sum = sum + (int)Math.pow(a,l);
                l--;
                temp = temp / 10;
            }
            // if they are equal number Disauram number.. 
            if(sum == number)
                System.out.println("Disarium Number.");
            else
                System.out.println("Not a Disarium Number.");
        }
    }

//Java program to find Disarium Number..

import java.util.Scanner;

public class Disarium{

public static void main(String args[])

{

//Declaring variable and taking value from user...

Scanner sc = new Scanner(System.in);

System.out.print("Please enter a number : ");

int number = sc.nextInt();

int temp = number, a = 0, sum = 0;

String s = Integer.toString(number);

int l = s.length();

// checking condition for Disauram number

while(temp>0)

{

a = temp % 10;

sum = sum + (int)Math.pow(a,l);

l--;

temp = temp / 10;

}

// if they are equal number Disauram number..

if(sum == number)

System.out.println("Disarium Number.");

else

System.out.println("Not a Disarium Number.");

}

Output

Disarium Number

Not a Disarium Number

In the above program, we have first declared and initialized a set variables required in the program.

number= it will hold entered number
temp= it will hold temporary origianal number
sum= it will hold sum of values
l= it will hold length of a number

After declaring variables in the next statement user will be prompted to enter a value and which will be assigned to variable ‘number’.

And after that we calculate the value Sum of its digits powered with their respective position is equal to the original number or not using Math.pow(a,l). inbuilt function

So the given number called Disarium if “sum of its digits powered with their respective position are equal” with the number.

Number is Disarium if condition True.

If not it is not a Disarium Number.

Program to check Strong Number In Java

In this tutorial, we will learn to create a Java Program to check Strong Numbers in Java using Java programming.

Prerequisites

Before starting with this tutorial we assume that you are best aware of the following Java programming topics:

Java Operators.
Basic Input and Output function in Java.
Class and Object in Java.
Basic Java programming.
If-else statements in Java.
For loop in Java.

Strong Number

A strong number is a number which sum of the factorial of the digits is equal to the number itself.
Example:-
145 = 1! + 4! + 5! = 1 + 24 + 120 = 145
So we can say that the 145 is a strong number.

Program to check Strong Number In Java

In our program we will find given number is a strong number or not in java programming. We would first declared and initialized the required variables. Next, we would prompt user to input the age value .Later we calculate the age is valid for vote or not let’s have a look at the code.

// Java progra to find Strong number..
import java.util.Scanner;

public class Strong_Num {
    
   public static boolean Strong(int number)
   {

      // declaring variables
      int sum = 0, last = 0;
      int temp = number;

      // traversing through all  the digits
      while(temp != 0) {
          last= temp % 10;
          sum += facto(last);
          temp /= 10;
      }
      // comparing sum and number
      if(sum == number)
          return true; 
      return false; 
   }

   // calculate factorial of given number..
   public static long facto(int n) {
      long fact = 1;
      for(int i=1; i<=n; i++) {
          fact *= i;
      }
      return fact;
   }

   public static void main(String[] args) {
      // declaring variables...
      int number = 0;
      boolean result = false;
      // Taking values from user...
      Scanner scan = new Scanner(System.in);
      System.out.print("Enter any number:: ");
      number = scan.nextInt();
      // checking number is strong number or not
      result = Strong(number);
      if(result)
          System.out.println(number +
                  " is a strong number.");
      else
          System.out.println(number +
                 " is not a strong number");
      scan.close();
   }
}

// Java progra to find Strong number..

import java.util.Scanner;

public class Strong_Num {

public static boolean Strong(int number)

{

// declaring variables

int sum = 0, last = 0;

int temp = number;

// traversing through all the digits

while(temp != 0) {

last= temp % 10;

sum += facto(last);

temp /= 10;

}

// comparing sum and number

if(sum == number)

return true;

return false;

}

// calculate factorial of given number..

public static long facto(int n) {

long fact = 1;

for(int i=1; i<=n; i++) {

fact *= i;

}

return fact;

}

public static void main(String[] args) {

// declaring variables...

int number = 0;

boolean result = false;

// Taking values from user...

Scanner scan = new Scanner(System.in);

System.out.print("Enter any number:: ");

number = scan.nextInt();

// checking number is strong number or not

result = Strong(number);

if(result)

System.out.println(number +

" is a strong number.");

else

System.out.println(number +

" is not a strong number");

scan.close();

}

Output

Strong number.

Not a strong number.

In the above program, we have first declared and initialized a set variables required in the program.

number= it will hold entered number
shrt= it will hold value person short by how much.

After declaring variables in the next statement user will be prompted to enter a value and which will be assigned to variable ‘number’.

And after that we calculate the value given number is strong or not by passing the number to user define function Strong(number) .

within the function here first of all we are going to find factors of given number and also the factorial of each factor of a number.

after that we going add the values and check if given number and sum of factor of given area same as shown in image

If both are same number is strong

If not Not a strong number

Program to check Perfect Number In Java

In this tutorial, we will learn to create a Java Program to check Perfect Numbers in Java using Java programming.

Prerequisites

Before starting with this tutorial we assume that you are best aware of the following Java programming topics:

Java Operators.
Basic Input and Output function in Java.
Class and Object in Java.
Basic Java programming.
If-else statements in Java.
For loop in Java.

What is Perfect Number.

A number is called Perfect number if Sum of factors (not include the number itself) is equal to the number is called a perfect number.

For example:=>
Number = 6.
Divisors of 6 are 1, 2 and 3.
Sum = 1+2+3 = 6 = 6
⇒ So 6 is a perfect number.

Program to check Perfect Number in Java

In this program we would find given number is a Perfect number or not .first of we would take a value from user and find the Perfect number.let have a look at the code.

// Java program to check given number is perfect or not
import java.util.Scanner;  
class Perfect_number {

	// declaring a function to find perfect number
	static boolean Perfect(int number)
	{
			if (number == 1)
			return false;
		int sum = 1;
		for (int i = 2; i < number; i++) {
			
			if (number % i == 0) {
				sum += i;
			}
			
		}
		// If sum of divisors is equal to then it is Perfect nuumber
		if (sum == number)
			return true;

		return false;
	}
	public static void main(String[] args)
	{
 // declaring variable and taking value form user..
	    int number;
	 Scanner sc=new Scanner(System.in);         
    System.out.print("Enter any number: ");  
    number=sc.nextInt(); 
		// check if the number is perfect or not.
		if (Perfect(number))
			System.out.println(number+ " is a perfect number");
		else
			System.out.println(number + " is not a perfect number");
	}
}

// Java program to check given number is perfect or not

import java.util.Scanner;

class Perfect_number {

// declaring a function to find perfect number

static boolean Perfect(int number)

{

if (number == 1)

return false;

int sum = 1;

for (int i = 2; i < number; i++) {

if (number % i == 0) {

sum += i;

}

// If sum of divisors is equal to then it is Perfect nuumber

if (sum == number)

return true;

return false;

}

public static void main(String[] args)

{

// declaring variable and taking value form user..

int number;

Scanner sc=new Scanner(System.in);

System.out.print("Enter any number: ");

number=sc.nextInt();

// check if the number is perfect or not.

if (Perfect(number))

System.out.println(number+ " is a perfect number");

else

System.out.println(number + " is not a perfect number");

}

Output

Perfect Number.

In the above program, we have first declared and initialized a set variables required in the program.

number= it will hold entered number.
sum= it will hold sum of factors.

After that we take a number from user and find given number is a Perfect number or not

after taking value from user check condition for number is perfect or not.

where we first check that number must be grater than one,after that we find the factor of a number and add them and check if sum of factor equals to number then it is a perfect number.

if not not a perfect number.

Program to check Palindrome Number In Java

In this tutorial, we will learn to create a Java Program to Check Palindrome Number In Java using Java programming.

Prerequisites

Before starting with this tutorial we assume that you are best aware of the following Java programming topics:

Java Operators.
Basic Input and Output function in Java.
Class and Object in Java.
Basic Java programming.
If-else statements in Java.
For loop in Java.

What is Palindrome Number.

A number is called a Palindrome Number if number is same after reverse the number it self.

121 <=> 121

323 <=> 323

656 <=>656.

Algorithm to find Palindrome Number

Get the number from user to check condition for palindrome
pass the number in temporary variable.
Reverse the number.
Check Temporary number with reversed number.
If both numbers are same number is “Palindrome number”.
Else not palindrome.

Program to check Palindrome Number In Java

In this program we would find given number is a Palindrome number or not .first of we would take a value from user and find the Palindrome number.let have a look at the code.

// java preogram to find given number is a palindrome or not
import java.util.*;
class Palindrome
{  
 public static void main(String args[])
 {  
 // declaring variables  and takin values from user
  int r,sum=0,temp;    
  int number;
 Scanner sc = new Scanner(System.in);  
 System.out.println("Enter any number ");  
 number = sc.nextInt(); 
// copying original to temp variables.. 
 temp=number;    
//  loop run till value of number greater than  0
  while(number>0)
{    
   r=number%10;  
   sum=(sum*10)+r;    // reversing number 
   number=number/10;    
  }    
 // compare if original number equals to reverse number or not..
  if(temp==sum)    
   System.out.println("palindrome number "+ temp);    
  else    
   System.out.println("not palindrome" + temp);    
}  
}

// java preogram to find given number is a palindrome or not

import java.util.*;

class Palindrome

{

public static void main(String args[])

{

// declaring variables and takin values from user

int r,sum=0,temp;

int number;

Scanner sc = new Scanner(System.in);

System.out.println("Enter any number ");

number = sc.nextInt();

// copying original to temp variables..

temp=number;

// loop run till value of number greater than 0

while(number>0)

{

r=number%10;

sum=(sum*10)+r; // reversing number

number=number/10;

}

// compare if original number equals to reverse number or not..

if(temp==sum)

System.out.println("palindrome number "+ temp);

else

System.out.println("not palindrome" + temp);

}

Output

Palindrome number

Not a palindrome Number.

In the above program, we have first declared and initialized a set variables required in the program.

number= it will hold entered number.
sum= it will hold sum of factors.

After that we take a number from user and find given number is a Palindrome number or not.

Now we will run the loop until (number>0)

Here we used a while loop to reverse number and store the reversed number in sum.
Then we will check entered number is equal to the reverse number.

If Number is equal to reverse number (number==sum) then number is palindrome.

If not number is not a Palindrome.

Program to check Magic Number In Java

In this tutorial, we will learn to create a Java Program to check Magic Numbers in Java using Java programming.

Prerequisites

Before starting with this tutorial we assume that you are best aware of the following Java programming topics:

Java Operators.
Basic Input and Output function in Java.
Class and Object in Java.
Basic Java programming.
If-else statements in Java.
For loop in Java.

What is Magic Number.

A number is called a Magic number if sum of its digits repeated calculated till a single digit , If single digit end at 1 then the number is a magic number.

For example:-> 199 is a magic number because 1+9+9 = 19 = 1+9 = 10 = 1+0 = 1.

Program to check Magic Number In Java

In this program we would find given number is a Magic number or not .first of we would take a value from user and find the Magic number.let have a look at the code

// java program to check given number is a Magic number or not
import java.util.Scanner;
class MagicNumber
{
    public static void main(String args[])
    {
       //Declaring variables and taking values from user.
        Scanner in = new Scanner(System.in);
        System.out.println("Enter any number");
        int number = in.nextInt();
        int no=number;
        // looping to get last recursively  number.
        int sum = 0; 
        while(no>0 || sum>9)
        { 
            if (no==0)
            {
                no = sum; 
                sum = 0;
            } 
            sum += no%10; 
            no /= 10;
        }
        // Condition for Magic number..
        if(sum==1)
            System.out.println(number + " is a Magic Number");
        else
            System.out.println(number + " is not a Magic Number");
    }
}

// java program to check given number is a Magic number or not

import java.util.Scanner;

class MagicNumber

{

public static void main(String args[])

{

//Declaring variables and taking values from user.

Scanner in = new Scanner(System.in);

System.out.println("Enter any number");

int number = in.nextInt();

int no=number;

// looping to get last recursively number.

int sum = 0;

while(no>0 || sum>9)

{

if (no==0)

{

no = sum;

sum = 0;

}

sum += no%10;

no /= 10;

}

// Condition for Magic number..

if(sum==1)

System.out.println(number + " is a Magic Number");

else

System.out.println(number + " is not a Magic Number");

}

Output

Magic Number.

Not a Magic Number.

In the above program, we have first declared and initialized a set variables required in the program.

no,number= it will hold entered number.
Sum= it will hold result of calculation.

After that we take a number from user and find given number is a Magic number or not.

Now we will run the loop until(no>0 || sum>9)

Here we will loop till a single digit is obtained by recursively adding the sum of its digits.

Then we will check last digit of their sum is equals to one (sum==1) if it is one number is a Magic number.

if not it is not a Magic Number.

Program to check Twin prime In Java

In this tutorial, we will learn to create a Java Program to check Twin prime In Java using Java programming.

Prerequisites

Before starting with this tutorial we assume that you are best aware of the following Java programming topics:

Java Operators.
Basic Input and Output function in Java.
Class and Object in Java.
Basic Java programming.
If-else statements in Java.
For loop in Java.

What is Twin Prime Number.

A Number is called a Prime if it is Divisible by itself and Twin Prime number having a prime gap of two(2) is referred to as a twin prime number.

For Example:->

29 and 31 are Twin Prime Number.(31-29=2).
3 and 5 are Twin Prime Number.(5-3 =2).
71 and 73 are Twin Prime Number.(73-71 =2).

Program to check Twin prime In Java

In this program we would find given numbers are Twin prime number or not .first of we would take a value from user and find the Twin prime .let have a look at the code

// JAVA Program for Twin prime number..
import java.util.*;
import java.util.Scanner;

class Twin {
	static boolean Prime(int number)
	{
		if (number <= 1) return false;
		if (number <= 3) return true;

		// This is checked so that we can skip
		// middle five numbers in below loop
		if (number % 2 == 0 || number % 3 == 0)
			return false;

		for (int i = 5; i * i <= number; i = i + 6)
			if (number % i == 0 || number % (i + 2) == 0)
				return false;

		return true;
	}

	// Returns true if num and num1 are twin primes
	static boolean Twin_Prime(int num, int num1)
	{
		return (Prime(num) && Prime(num1) &&
					Math.abs(num - num1) == 2);
	}

	public static void main(String[] args)
	{
		Scanner in = new Scanner(System.in); 
		System.out.println("Enter first Prime number"); 
		int no1 = in.nextInt();
		Scanner in1 = new Scanner(System.in); 
		System.out.println("Enter Second Prime number"); 
		int no2 = in1.nextInt();

		if (Twin_Prime(no1, no2))
			System.out.println("Twin Prime");
		else
			System.out.println("Not Twin Prime");
	}
}

// JAVA Program for Twin prime number..

import java.util.*;

import java.util.Scanner;

class Twin {

static boolean Prime(int number)

{

if (number <= 1) return false;

if (number <= 3) return true;

// This is checked so that we can skip

// middle five numbers in below loop

if (number % 2 == 0 || number % 3 == 0)

return false;

for (int i = 5; i * i <= number; i = i + 6)

if (number % i == 0 || number % (i + 2) == 0)

return false;

return true;

}

// Returns true if num and num1 are twin primes

static boolean Twin_Prime(int num, int num1)

{

return (Prime(num) && Prime(num1) &&

Math.abs(num - num1) == 2);

}

public static void main(String[] args)

{

Scanner in = new Scanner(System.in);

System.out.println("Enter first Prime number");

int no1 = in.nextInt();

Scanner in1 = new Scanner(System.in);

System.out.println("Enter Second Prime number");

int no2 = in1.nextInt();

if (Twin_Prime(no1, no2))

System.out.println("Twin Prime");

else

System.out.println("Not Twin Prime");

}

Output

Twin Prime number

Not a Twin Prime number.

In the above program, we have first declared and initialized a set variables required in the program.

number = it will hold entered numbers
num,num1,no1 and no2= it will hold entered numbers.

After that we take a number from user and find given number is a Twin Prime number or not.

After taking two prime number we pas this number to Prime() function where we calculate is there difference or prime number is 2 if yes.

Function returns true

else return False.

Java Program to Find HCF and LCM of Two Numbers

In this tutorial, we will learn to create a Java Program to Find HCF and LCM of Two Numbers using Java programming.

Prerequisites

Before starting with this tutorial we assume that you are best aware of the following Java programming topics:

Java Operators.
Basic Input and Output function in Java.
Class and Object in Java.
Basic Java programming.
If-else statements in Java.
For loop in Java.

What is LCM Number.

LCM is a method to finding the smallest possible multiplication of two or more numbers. LCM of a numbers is divisible by both or more numbers. For example, LCM of 5 ,4 and 20 is 20.

What is HCF Number.

GCD(Greatest Common Divisor) or HCF (Highest Common Factor) . When we finding the factor of two numbers, Highest Common Factor of numbers is the Largest factor that divides these two numbers. The greatest factor found from the common factors is called the HCF. It is also called the Greatest common factor.

Java Program to Find HCF and LCM of Two Numbers.

In this program we would find HCF and LCM of given numbers .first of we would take a value sfrom user and find then we will find HCF and LCM of given numbers.

// java program to find HCF and LCM of given numbers.
import java.util.Scanner;

public class Hcd_Lcm
{
   public static void main(String args[])
   {
     // Decalring avriables and taking values from user.
     int t1, t2, no1, no2, temp, hcf, lcm;
      Scanner scanner = new Scanner(System.in);
      System.out.print("Enter First Number ");
      no1 = scanner.nextInt();
      System.out.print("Enter Second Number ");
      no2 = scanner.nextInt();
      scanner.close();
// pass number to temp variables..
      t1 = no1;
      t2 = no2;
// checking condtrion for lc and Hcf..
      while(t2 != 0){
         temp = t2;
         t2 = t1%t2;
         t1 = temp;
      }
      hcf = t1;
      lcm = (no1*no2)/hcf;
// Printing the result..
      System.out.println("HCF of input numbers: "+hcf);
      System.out.println("LCM of input numbers: "+lcm);
   }
}

// java program to find HCF and LCM of given numbers.

import java.util.Scanner;

public class Hcd_Lcm

{

public static void main(String args[])

{

// Decalring avriables and taking values from user.

int t1, t2, no1, no2, temp, hcf, lcm;

Scanner scanner = new Scanner(System.in);

System.out.print("Enter First Number ");

no1 = scanner.nextInt();

System.out.print("Enter Second Number ");

no2 = scanner.nextInt();

scanner.close();

// pass number to temp variables..

t1 = no1;

t2 = no2;

// checking condtrion for lc and Hcf..

while(t2 != 0){

temp = t2;

t2 = t1%t2;

t1 = temp;

}

hcf = t1;

lcm = (no1*no2)/hcf;

// Printing the result..

System.out.println("HCF of input numbers: "+hcf);

System.out.println("LCM of input numbers: "+lcm);

}

Output

Hcf and Lcm

In the above program, we have first declared and initialized a set variables required in the program.

no1,no2= it will hold entered numbers.
t1and t2= it will hold temp values.
lcm = it will hold result of lcm
Hcf = it will hold result of hcf.

After that we take a numbers from user and find HCF and LCM of given numbers.

after that we calculate hcf and lcm of given number as shown in image below

And finally we will print both hcd and lcm of given numbers.

Java Program to Find average of 3 numbers

In this tutorial, we will learn to create a Java Program to Find average of 3 numbers using Java programming.

Prerequisites

Before starting with this tutorial we assume that you are best aware of the following Java programming topics:

Java Operators.
Basic Input and Output function in Java.
Class and Object in Java.
Basic Java programming.
If-else statements in Java.
For loop in Java.

What is average of numbers.

Average of numbers is by adding up all the numbers and dividing by size of numbers are in the set.

Java Program to Find average of 3 numbers

In this program we would find average of given number.first of we would take a values from user and find the average of numbers.let have a look at the code.

// java program to find average of three numbers..
import java.util.Scanner;
public class Average 
{
 public static void main(String[] args)
    {
        // Decalring varaiables and taking values from user..
        Scanner scan = new Scanner(System.in);
        System.out.print("Enter the first number: ");
        double number = scan.nextDouble();
        System.out.print("Enter the second number: ");
        double number1 = scan.nextDouble();
        System.out.print("Enter the third number: ");
        double number2 = scan.nextDouble();
        scan.close();
        // Passing value to fun avg()..
        System.out.print("The average of entered numbers is:" + avg(number, number1, number2) );
    }
    // Calculating average of numvbers...
  public static double avg(double n1, double n2, double n3)
    {
        return (n1 + n2 + n3) / 3;
    }
}

// java program to find average of three numbers..

import java.util.Scanner;

public class Average

{

public static void main(String[] args)

{

// Decalring varaiables and taking values from user..

Scanner scan = new Scanner(System.in);

System.out.print("Enter the first number: ");

double number = scan.nextDouble();

System.out.print("Enter the second number: ");

double number1 = scan.nextDouble();

System.out.print("Enter the third number: ");

double number2 = scan.nextDouble();

scan.close();

// Passing value to fun avg()..

System.out.print("The average of entered numbers is:" + avg(number, number1, number2) );

}

// Calculating average of numvbers...

public static double avg(double n1, double n2, double n3)

{

return (n1 + n2 + n3) / 3;

}

Output

Average of Three Numbers.

In the above program, we have first declared and initialized a set variables required in the program.

number,number1 and number2 = it will hold entered numbers.

After that we take a numbers from user and find average of numbers.

after getting values from users we pass the number to function avg().

In this Function we take three parameter as a arguments and add all three values and divide the sum by 3 to get the desire output and return the average to main function and where we will print the result of program.

Above image is the output of above program.

Java Program to display odd numbers from 1 to n or 1 to 100

In this tutorial, we will learn to create a Java Program to display odd numbers from 1 to n or 1 to 100 using Java programming.

Prerequisites

Before starting with this tutorial we assume that you are best aware of the following Java programming topics:

Java Operators.
Basic Input and Output function in Java.
Class and Object in Java.
Basic Java programming.
If-else statements in Java.
For loop in Java.

What is Odd Number.

A number is called odd that number cannot be divided exactly into pairs or we can say odd numbers, when divided by 2, gives remainder 1. (5%2==1).

Java Program to display odd numbers from 1 to n or 1 to 100

In this program we would print all odd number between “1 to n or 1 to 100” .first of we would take a value from user and find the Odd number between given numbers .let have a look at the code.

// java program to find odd number between 1 to N
import java.util.Scanner;
class Odd_numbers 
{
   public static void main(String args[]) 
   {
	  //Declaring variables and taking values from user.
        Scanner in = new Scanner(System.in);
        System.out.println("Enter value of n");
        int number = in.nextInt();
 // Printing odd number from 1 to n....
	System.out.print("Odd Numbers from 1 to "+number+" are: ");
	for (int i = 1; i <= number; i++) {
	   if (i % 2 != 0) {
		System.out.print(i + " ");
	   }
	}
   }
}

// java program to find odd number between 1 to N

import java.util.Scanner;

class Odd_numbers

{

public static void main(String args[])

{

//Declaring variables and taking values from user.

Scanner in = new Scanner(System.in);

System.out.println("Enter value of n");

int number = in.nextInt();

// Printing odd number from 1 to n....

System.out.print("Odd Numbers from 1 to "+number+" are: ");

for (int i = 1; i <= number; i++) {

if (i % 2 != 0) {

System.out.print(i + " ");

}

Output

Odd number between 1-100.

Odd number between 1-N. Value of n is 50.

In the above program, we have first declared and initialized a set variables required in the program.

number= it will hold entered number.
i= i for iteration.

After that we take a number from user and find odd number between the given number.

Here we can use for loops to display odd numbers:

Using for Loop
Using if-else Statement.

In order to check odd number, we divided the number from 1 to N by 2 if it leaves a remainder of 1,then the number is odd

and the print the values.. As shown in image above.

Java Program to display even numbers from 1 to n or 1 to 100

In this tutorial, we will learn to create a Java Program to display even numbers from 1 to n or 1 to 100 using Java programming.

Prerequisites

Before starting with this tutorial we assume that you are best aware of the following Java programming topics:

Java Operators.
Basic Input and Output function in Java.
Class and Object in Java.
Basic Java programming.
If-else statements in Java.
For loop in Java.

What is even Number.

A number is called a even that completely divided into pairs or we can say even numbers, when divided by 2, gives remainder (0)Zero. . (4%2==0).

Java Program to display even numbers from 1 to n or 1 to 100

In this program we would print all even number between “1 to n or 1 to 100” .first of we would take a value from user and find the even number between given numbers .let have a look at the code.

// java program to find even number between 1 to N
import java.util.Scanner;
class Even_numbers 
{
   public static void main(String args[]) 
   {
	  //Declaring variables and taking values from user.
        Scanner in = new Scanner(System.in);
        System.out.println("Enter value of n");
        int number = in.nextInt();
 // Printing even number from 1 to n....
	System.out.print("even Numbers from 1 to "+number+" are: ");
	for (int i = 1; i <= number; i++) {
	   if (i % 2 == 0) {
		System.out.print(i + " ");
	   }
	}
   }
}

// java program to find even number between 1 to N

import java.util.Scanner;

class Even_numbers

{

public static void main(String args[])

{

//Declaring variables and taking values from user.

Scanner in = new Scanner(System.in);

System.out.println("Enter value of n");

int number = in.nextInt();

// Printing even number from 1 to n....

System.out.print("even Numbers from 1 to "+number+" are: ");

for (int i = 1; i <= number; i++) {

if (i % 2 == 0) {

System.out.print(i + " ");

}

Output

even number between 1-100.

even number between 1-N. Value of n is 50.

In the above program, we have first declared and initialized a set variables required in the program.

number= it will hold entered number.
i= i for iteration.

After that we take a number from user and find even number between the given number.

Here we can use for loops to display even numbers:

Using for Loop
Using if-else Statement.

In order to check even number, we divided the number from 1 to N by 2 if it leaves a remainder of 0 zero,then the number is even.

and the print the values.. As shown in image above.