Java Assignment

import java.util.*;

public class Employee {

	// Declare the variables
	protected String employeeName = " ";
	protected String employeeNumber = 0;
	protected String hireDate = " ";
	String message = " ";

	// Constructors
	public Employee(String employeeName, String employeeNumber, String hireDate) throws EmployeeNumberException{
		this.employeeName = employeeName;
		this.employeeNumber = employeeNumber;
		int parseNumber = Integer.parseInt(employeeNumber);
		this.hireDate = hireDate;
		if(parseNumber < 0 || parseNumber > 9999)
			throw new EmployeeNumberException(employeeNumber);
	}

	// Setters
	public void setemployeeName(String employeeName){

	}

	public String EmployeeNumberException(int parseNumber){
		boolean True ;
		int firstDigits = employeeNumber.indexOf(0,2);
		try{
			if(firstDigits > 0 && firstDigits < 9999){
				boolean False;
			}
		}catch(InputMismatchException e){
			message = "Sorry, but your employee number is invalid";
		}
		return message;
	}

	// Getters
	public String getemployeeName(){
		return employeeName;
	}

	public String getemployeeNumber(){
		return employeeNumber;
	}

	public String gethireDate(){
		return hireDate;
	}
}