Validator.java

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package gruppeinnlevering;

import java.time.DateTimeException;
import java.time.LocalDate;
import java.util.Scanner;

/**
 *
 * @author norby
 */
public class Validator {

    public Validator() {

    }

    //            }
    /**
     * creates a new Scanner reades next input as String
     *
     * @return input String typed by user
     */
    public String stringScanner() {

        Scanner reader = new Scanner(System.in);
        String input = reader.nextLine();

        return input;
    }

    /**
     * creates a new scanner Reades next input as int
     *
     * @return int input returns the number written by user.
     */
    public int intScanner() {

        Scanner reader = new Scanner(System.in);
        int input = reader.nextInt();

        return input;
    }

    /**
     * Check if String is not null or empty
     *
     * @return booelan true/false
     */
    public String checkString() {

        String stringToCheck = "error";

        boolean stringValid = false;

        while (!stringValid) {
            stringToCheck = stringScanner();

            if (stringToCheck == null || stringToCheck.isEmpty()) {
                System.out.println("String is empty, PLease try again");
            } else {
                stringValid = true;
            }
        }

        return stringToCheck;
    }

    /**
     *
     * Check if value is inside av given range
     *
     * @param value
     *
     * @param min
     * @param max
     * @return boolean true/false
     */
    public int checkInt(int min, int max) {

        int valueToCheck = 0;

        boolean check = false;
        while (!check) {
            valueToCheck = intScanner();

            if (valueToCheck >= min && valueToCheck <= max) {
                check = true;
            } else {
                System.out.println("Invalid Input" + "\nMin: " + " " + min + "\nMax: " + " " + max);
            }
        }

        return valueToCheck;
    }

    public boolean testDate(int year, int month, int dayOfMonth) {

        boolean valid = true;
        try {
            LocalDate date = LocalDate.of(year, month, dayOfMonth);
        } catch (DateTimeException e) {
            valid = false;
            System.out.println("Exception thrown  :" + e);
        
        
    }
       return valid; 
    }
    

}