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CheckPrime.java

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import java.util.*;

public class CheckPrime{

public static void main(String[] args) {

Scanner sc = new Scanner(System.in);

System.out.println("enter a number");

int n = sc.nextInt();

boolean isprime = true;

for(int i=2; i*i<=n;i++){

if(n%i==0){

isprime = false;

break;

}

}

if(n<2){

isprime = false;

}

if(isprime==false){

System.out.print(n+" is not a Prime Number");

}else{

System.out.print(n+" is a Prime Number");

}

}

}