BlueJ Program On Nearest Prime Number Of Any Entered Number

In this BlueJ program user will enter any number and the nearest prime number of the entered value will be displayed.

import java.io.*;

class Prime

{

 BufferedReader br=new BufferedReader(new InputStreamReader(System.in));

 int n;

 public void takeNumber() throws Exception

 {

  System.out.println("Enter the number:");

  n=Integer.parseInt(br.readLine());

   System.out.print("Nearest Prime Number of "+n + "=");

  while(true)

  {

     if(prime(n))

     {

      System.out.print(n);

      break;

      }

      n--;

  }

  }

  private boolean prime(int x)

  {

   int j;

   for(j=2;j< x;i++)
  {

    if(x%j==0)

    break;

    }

    if(j==x)

    return true;

    else

    return false;

    }

    public static void main(String args[]) throws Exception

    {

    Prime ob=new Prime();

    ob.takeNumber();

    }

    }

Related Post: BlueJ Programs on Number

Sample input and output of the program

Sample Input: 25

Sample Output: Nearest Prime number is 23