问Java:无限循环中的扫描器输入

EN

import java.util.Scanner;
public class Main {


    public static Character req = '/'; 

    public static boolean datecheck(String d){
        String hold = d; 
        String[] a = new String[1];
        Character one = hold.charAt(2);
        Character two = hold.charAt(5); 

        //check to make sure the "/" are where they need to be
        if(one.equals(req)&&two.equals(req)){
        return true; 
        }
        else
            return false; 
    }



public static void main(String[] args) {
    // TODO Auto-generated method stub
    Scanner input = new Scanner(System.in);
    System.out.println("welcome to the BrightSide Scheduler "
            + "\nplease input the day you wish to schedule:");
    String date = input.next();
    input.close();
    try{
    datecheck(date);
    }catch (NullPointerException e){
        System.out.println("didnt work");
    }

    if (datecheck(date)==true){
        System.out.print("Success");
    }
    else{
        System.out.println("fail");
    }
}

}