# Java program to display prime numbers from 1 to 100

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#### Java program to display prime numbers from 1 to 100

Here’s the prime numbers from 1 to 100,

Also read – java program to check prime number

`public class PrimeNumbersJava{   public static void main(String[] args)   {      int a = 0;      int number = 0;      String strPrimeNumber = "";      for(a = 1; a <= 100; a++)      {         int counter = 0;         for(number = a; number >= 1; number--)         {            if(a % number == 0)            {               counter = counter + 1;            }         }         if(counter == 2)         {            strPrimeNumber = strPrimeNumber + a + " ";         }      }      System.out.println("Prime numbers from 1 to 100 : ");      System.out.println(strPrimeNumber);   }}`

Output:

Prime numbers from 1 to 100 : 2 3 5 7 11 13 17 19 23 29 31 37 41 43 47 53 59 61 67 71 73 79 83 89 97

Similarly we can display from 1 to n,

```import java.util.Scanner;

{
public static void main(String[] args)
{
Scanner sc = new Scanner(System.in);
int a = 0;
int number = 0;
System.out.println("Please enter the value of n : ");
int n = sc.nextInt();
for(a = 1; a <= n; a++)
{
int count = 0;
for(number = a; number >= 1; number--)
{
if(a % number == 0)
{
count = count + 1;
}
}
if(count == 2)
{
}
}
System.out.println("Prime numbers from 1 to n : ");