Category Archives: Java Number Programs

Java Number Programs

Java program to break integer into digits

In this tutorial, we will learn to create a Java program to break integer into digits 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.
User Define functions.

Steps to break number into digit.

In our Java program to break integer into digits using a while loop.
first of all while loop will count the total digits in a number.
And the second while loop will iterate the Integer
and print each digit as an output.

Java program to break integer into digits.

In this program we would find digit value from a given integer whole number.first of all we take a value from user and then break whole number into digit.

// Java program to find digit of given  number
import java.util.Scanner;
public class Digitsin_no {
	private static Scanner sc;
	public static void main(String[] args) {
// Decalring variables and taking values fro user
		int number, rem, temp, count = 0;
		sc = new Scanner(System.in);		
		System.out.print("Enter Any Number = ");
		number = sc.nextInt();
		temp = number;
         // copy to temp original numebr
		while(temp > 0)
		{
			temp = temp / 10;
			count++;
		}
		while(number > 0)
		{
			rem = number % 10;
			System.out.println(" Digit at Position " + count +  " = " + rem);
			number = number / 10;
			count--;
		}
	}
}

// Java program to find digit of given number

import java.util.Scanner;

public class Digitsin_no {

private static Scanner sc;

public static void main(String[] args) {

// Decalring variables and taking values fro user

int number, rem, temp, count = 0;

sc = new Scanner(System.in);

System.out.print("Enter Any Number = ");

number = sc.nextInt();

temp = number;

// copy to temp original numebr

while(temp > 0)

{

temp = temp / 10;

count++;

}

while(number > 0)

{

rem = number % 10;

System.out.println(" Digit at Position " + count + " = " + rem);

number = number / 10;

count--;

}

Output

Number into Digit.

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

number= it will hold entered number.
rem= it will hold the result.
temp= it will hold temporary number.
count= it will count digit value.

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

Here first while loop will count the total number of digits in a given number.

And second while loop will iterate the Integer and print each digit as an output.

and Finally we will print the digit and place values as shown in image above.

Java Program to display prime numbers between 1 and 100 or 1 and n

In this tutorial, we will learn to create a Java Program to display prime numbers between 1 and 100 or 1 and n 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.
User Define functions

What is Prime Number?

A number is called a Prime number if a number is divisible by 1 or itself only.
For example 2, 3, 5, 7, 11, 13, 17..are some prime numbers.

Java Program to display prime numbers between 1 and 100 or 1 and n

In this program we would print the prime numbers between 1 and 100 .First of all we take the value of N form user and find prime number from 1 to N.Let have a look at the code.

// java program to find prime number from 1 to n
import java.util.Scanner;
class Prime_number
{
	public static void main(String arg[]){
	// Decalring variables and taling values from user..
	int i,count;
    System.out.print("Enter the value of N : ");
	Scanner sc=new Scanner(System.in);
	int number=sc.nextInt();
	// Printing the result...
    System.out.println("Prime numbers between 1 to "+number+" are ");
	for(int j=2;j<=number;j++)
	{
	count=0;
	for(i=1;i<=j;i++)
	{
	   if(j%i==0)
	   {
	        count++;        
	   }
	}
	if(count==2)
	       System.out.print(j+"  ");     
	}
	}
}

// java program to find prime number from 1 to n

import java.util.Scanner;

class Prime_number

{

public static void main(String arg[]){

// Decalring variables and taling values from user..

int i,count;

System.out.print("Enter the value of N : ");

Scanner sc=new Scanner(System.in);

int number=sc.nextInt();

// Printing the result...

System.out.println("Prime numbers between 1 to "+number+" are ");

for(int j=2;j<=number;j++)

{

count=0;

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

{

if(j%i==0)

{

count++;

}

if(count==2)

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

}

Output

Prime number From 1 – N.

Prime number From 1 – 50

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

number= it will hold entered number.
count= it will show number is prime or not
i and j = for iteration.

After declaring variables we take a value from user and print prime number from 1 – N.

Algorithm

1: START
2: declare variables count =0, number, i=1,j=1.
3: Take value of number from user
4: SET j= 1
5: SET count = 0
6: if i%j = = 0 then count ++
7: j = j + 1
8: if count= 2 then print the value of i.
9: number++.
10: i = i +1
11: END

Simply here we check each and every value form 1 to N and print only values those satisfied the logic of a prime number it means number which divisible by itself only are prime numbers..

and in that manner we print all prime number between 1 – n or 100.

Java Program to display first 100 prime numbers

In this tutorial, we will learn to create a Java Program to display first 100 prime 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.
User Define functions

What is Prime Number?

A number is called a Prime number if a number is divisible by 1 or itself only.
For example 2, 3, 5, 7, 11, 13, 17..are some prime numbers.

Java Program to display prime numbers between 1 and 100 or 1 and n

In this program we would print the prime numbers between 1 and 100 .First of all we declare variables and then find prime number from 1 to 100.Let have a look at the code.

// java program to find prime number from 1 to 100
import java.util.Scanner;
class Prime_number
{
	public static void main(String arg[]){
	// Decalring variables and taling values from user..
	int i,count;
	// Printing the result...
    System.out.println("Prime numbers between 1 to 100 are ");
	for(int j=2;j<=100;j++)
	{
	count=0;
	for(i=1;i<=j;i++)
	{
	   if(j%i==0)
	   {
	        count++;        
	   }
	}
	if(count==2)
	       System.out.print(j+"  ");     
	}
	}
}

// java program to find prime number from 1 to 100

import java.util.Scanner;

class Prime_number

{

public static void main(String arg[]){

// Decalring variables and taling values from user..

int i,count;

// Printing the result...

System.out.println("Prime numbers between 1 to 100 are ");

for(int j=2;j<=100;j++)

{

count=0;

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

{

if(j%i==0)

{

count++;

}

if(count==2)

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

}

Output

Prime number From 1 – 100.

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

count= it will show number is prime or not
i and j = for iteration.

After declaring variables we take a value from user and print prime number from 1 – N.

Algorithm

1: START
2: declare variables count =0, i=1,j=1.
3: SET j= 1
4: SET count = 0
5: if i%j = = 0 then count ++
6: j = j + 1
7: if count= 2 then print the value of i.
8: i = i +1
9: END

Simply here we check each and every value form 1 to 100 and print only values those satisfied the logic of a prime number it means number which divisible by itself only are prime numbers..

and in that manner we print all prime number lies between 1 -100 in our program.

Java Array Programs

Java Basic Programs

Java Number Programs

Java Pattern Programs

More Java Programs

Learn

ABOUT PAGES

Category Archives: Java Number Programs

Java program to break integer into digits

Prerequisites

Steps to break number into digit.

Java program to break integer into digits.

Output

Java Program to display prime numbers between 1 and 100 or 1 and n

Prerequisites

What is Prime Number?

Java Program to display prime numbers between 1 and 100 or 1 and n

Output

Algorithm

Java Program to display first 100 prime numbers

Prerequisites

What is Prime Number?

Java Program to display prime numbers between 1 and 100 or 1 and n

Output

Algorithm