i was trying to solve prime generator problem and below is my code.
i tried several test cases but didnt get any wrong output. please tell where am i getting wrong
import java.io.*;
class A{
boolean checkForPrime(int n){
if( n == 0 || n == 1){
return false;
}
else if( n == 2){
return true;
}
else if( n == 3){
return true;
}
else {
int sqrt = (int)Math.sqrt(n);
for(int i = 2;i<= sqrt;i++){
if( n % i != 0){
continue;
}else{
return false;
}
}
return true;
}
}
}
class Main{
public static void main(String args[])throws Exception{
A ab = new A();
int a,b , input;
BufferedReader br = new BufferedReader(new InputStreamReader(System.in));
String e =br.readLine();
try{
input = Integer.parseInt(e);
for(int i=0;i<input;i++){
try{
String c = br.readLine();
String d =br.readLine();
a = Integer.parseInt(c);
b = Integer.parseInt(d);
for(int j = a; j<= b ;j++){
if(ab.checkForPrime(j)){
System.out.println(j);
}else{
continue;
}
}
}
catch (NumberFormatException nfe) {
}
}
}catch (NumberFormatException nfe) {
}
}
}
