Program to generate Prime numbers.

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package com.kota.java; import java.io.BufferedReader; import java.io.InputStreamReader; public class PrimeNumber { public static void main(String[] args) throws Exception{ int i; BufferedReader bf = new BufferedReader( new InputStreamReader(System.in)); System.out.println("Enter number:"); int num = Integer.parseInt(bf.readLine()); System.out.println("Prime number: "); for (i=1; i < num; i++ ){ int j; for (j=2; j<i; j++){ int n = i%j; if (n==0){ break; } } if(i == j){ System.out.print(" "+i); } } } } /* * 0utput : * -------- * Enter number:100 Prime number: 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 * */