From 23c4ee5631ff7aff6b5435193d39fcd3467ed04c Mon Sep 17 00:00:00 2001 From: pooja2405 <39209073+pooja2405@users.noreply.github.com> Date: Thu, 1 Oct 2020 23:46:56 +0530 Subject: [PATCH] Create isPrime.java It is a program to check if the number is prime or not. --- isPrime.java | 30 ++++++++++++++++++++++++++++++ 1 file changed, 30 insertions(+) create mode 100644 isPrime.java diff --git a/isPrime.java b/isPrime.java new file mode 100644 index 0000000..876d80c --- /dev/null +++ b/isPrime.java @@ -0,0 +1,30 @@ +import java.io.BufferedReader; +import java.io.InputStreamReader; +import java.lang.*; + +class Prime{ + static boolean check(int i){ + if (i%2==0){ + return false; + } + else{ + for(int j=3;j<=Math.sqrt(i);j+=2) { + if(i%j==0) + return false; + } + return true; + } + } + + public static void main(String[] args) throws Exception{ + BufferedReader br = new BufferedReader(new InputStreamReader(System.in)); + System.out.println("Enter the number to check: "); + int n = Integer.parseInt(br.readLine()); + if(check(n)) + System.out.println(n+" is prime") ; + + else + System.out.println(n+" is NOT prime"); + + } +}