我输入n之后没办法再继续输入了 不知道该怎么改
import java.util.Scanner;
public class Loop {
public static void main(String[]args){
System.out.println("Please enter y or n");
Scanner in =new Scanner(System.in);
String response = in.nextLine();
while (response.equals("n")){
System.out.println("Please enter y or n");
return;
}
while((!response.equals("n"))&&(!response.equals("y"))){
System.out.println("Invalid input");
System.out.println("Please enter y or n");
return;
}
if(response.equals("y")){
System.out.println("Great! Let's get started!");
}
}
}