Saturday, 2 December 2017

How to get Prime number using Java Programming

Learning Java Programming Made Easy


  1. public class PrimeExample{    
  2.  public static void main(String args[]){    
  3.   int i,m=0,flag=0;      
  4.   int n=3;//it is the number to be checked    
  5.   m=n/2;      
  6.   if(n==0||n==1){  
  7.    System.out.println(n+" is not prime number");      
  8.   }
  9. else{  
  10.    for(i=2;i<=m;i++){      
  11.     if(n%i==0){      
  12.      System.out.println(n+" is not prime number");      
  13.      flag=1;      
  14.      break;      
  15.     }      
  16.    }      
  17.    if(flag==0)  { System.out.println(n+" is prime number"); }  
  18.   }//end of else  
  19. }    
  20. }   

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