import java.io.*;
import java.lang.*;
class Prime
{
	public static void main(String args[]) throws IOException
	{
		BufferedReader br=new BufferedReader(new InputStreamReader(System.in));
		System.out.println("Enter the value: ");
		int n=Integer.parseInt(br.readLine());
		System.out.println("Prime numbers are: ");
		for(int i=1;i<=n;i++)
        {
            int p=0;
            for(int j=1;j<=i;j++)
            {
                if(i%j==0)
                    p++;
            }
            if(p==2)
                    System.out.print(" "+i);

        }
	}
}

 

OUTPUT:

Compilation: javac Prime.java
 
Run:   java Prime
 
Enter the value:
50
Prime numbers are:
 2 3 5 7 11 13 17 19 23 29 31 37 41 43 47

  

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