How to find prime numbers in java

public class PrimeExample2{    

  static void checkPrime(int n){  
    int i,m=0,flag=0;      
    m=n/2;      
    if(n==0||n==1){  
     System.out.println(n+" is not prime number");      
    }else{  
       for(i=2;i<=m;i++){      
        if(n%i==0){      
         System.out.println(n+" is not prime number");      
         flag=1;      
         break;      
      }      
     }      
     if(flag==0)  { System.out.println(n+" is prime number"); }  
    }//end of else  
  }  
 public static void main(String args[]){    
  checkPrime(1);  
  checkPrime(3);  
  checkPrime(17);  
  checkPrime(20);  
}    
}

Similar codes

0 vote229 views1 answer
Press enter in robot java
Java
0 vote249 views1 answer
How to use int
Java
1 vote240 views2 answers
Dockerfile for spring boot app
Java
14 votes226 views2 answers
Java what is static
Java
2 votes222 views1 answer
Bucket sort java
Java
0 vote226 views1 answer
Stack overflow recyclerview
Java
4 votes224 views1 answer
Find difference in days between two dates java
Java
2 votes225 views2 answers
Get month from int java
Java
19 votes232 views5 answers
String vs stringbuffer
Java
-2 votes221 views1 answer
Java random number between 2 numbers
Java