Prime Number Program in Java | Using For Loop

prime number program in java:- we are going to start prime number program in java using for loop with example. So There is provided also composite numbers and prime numbers from 1 to 100.

After that in this section provide all example Prime number program

Simple Prime Number Program in Java

import java.util.*;
class PrimeNumber
   public static void main(String args[])
      int n, status = 1, num = 3, count, j;
      Scanner in = new Scanner(;
      System.out.println("Enter prime numbers you want");
      n = in.nextInt();
      if (n >= 1)
         System.out.println("First "+n+" prime numbers are:");
      for (count = 2; count <=n;)
         for (j = 2; j <= Math.sqrt(num); j++)
            if (num%j == 0)
               status = 0;
         if (status != 0)
         status = 1;

What are Prime Numbers

prime number program in java

And In this article, we are going to finding Prime numbers right all the prime numbers. So till a particularly given number, there is no need to take all the numbers.

After that, you just find the square root of the given number. And if that square root is decimal take the next number.

As a result, check the desirably of all available numbers from 1 till that square root of the number. Therefore using the same principle.

We are going to find the prime number between 1 and 100 and method. After that We are going to use is called Eratosthenes Sieve so let me first.


Prime Numbers from 1 to 100


How to Find Prime Numbers ( prime number program in java )

In this paragraph, This method will start with from the first row and will go from left to right.

And check the desirably of all the numbers still only 10 why because the square root of 100 is 10. So 10*10 give us 100 since 10*10=100 which is the biggest number on this grade.

But if you can check desirably of all the numbers till 10 and strike of all the numbers. Therefor Which are desirable by the numbers till 10 and then will have a set of numbers. And create a prime number program in java

Prime Number Composite Numbers ( Prime Number Program in Java )

As a result, Which is still meaning all of them will be prime numbers why because 10 get 10*10= 100 largest numbers in the grade. Also, learn advanced courses there are a lot of topic about Relational Algebra 

So, there is no need to check the desirability but 11 12 13 and so on why because of 10*11=110. So, which is a number bigger than 100, and 10*13 is bigger than 100 so in this particular case.

Even more, Actually useless the check desirably of all the numbers by another number. Also, which is bigger than 10. So Will be starting pro cigar and then you will understand.

Why I say this and now let’s start the pro cigar. First will start the first row and each row will be gone from left to right.

The first will take the first row then will take the second row and since 10 is the first row. We are actually not supposed to go to the second row but to the cross-check a logic.

you will take the element of the second row also will take number 1 by 1 and then we will cross all the multiple. We will start from 1 and 1 is actually a special number it is neither classified as a prime number nor as a composite number.

Simple Example to Find Prime Number

Prime Number Program in Java: Here, we are going to about 1 after this will go check from left to right and check for the still. There uncross how to number after this 2.

Therefore, 2 is a prime number and then what have to do I have the strike to all the numbers. Thus, the switch is the multiple numbers of 2 so all the numbers.

Therefore, which are numbers of 2 will be the even numbers on you can peacefully strike of alternate numbers.

Similarly, every second number of this number Therefor 2 is a prime number first number after 2. So, 3 and the second number after to 4 so 4 is multiple of 2 similar 6 is multiple numbers of 2.

Here, 8 is multiple numbers of 2 all the even numbers are multiples of 2. 12 is multiple numbers of 2,14,16,18 and 20 is multiple of 2.

After that, we can all these alternate columns then have even numbers. So, 3 is prime number All have to red color shade prime number. Thus All highlight number is prime numbers

HTML Syntax: first of all, we have to describe simple HTML tags with all information and also example create your simple page web learn to go to check.

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As a result, we guide all main topic relative prime number program in java. So, if any topic and queries to relative this topic you can ask in the comments section. Also, you learn the most popular topic find Python Pass  


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