/* * To change this template, choose Tools | Templates * and open the template in the editor. */package ui;import java.util.Scanner;import java.util.StringTokenizer;import logical.AgendaService;import exception.BadCommandException;/** * 這個方法是注冊命令的類，實現命令的解析和執行，另外輸出結果字符串 * @author zouhao */public class RegisterCommand extends UserCommand{    /**     * 命令的構造函數     */    RegisterCommand()    {        agenda = AgendaService.getInstance();        success=false;    }    /**     * 解析命令方法，如果命令不符合語法規則，拋出異常     * @param input 用于解析的命令輸入字符串     */    public void parse(String input){        scanner = new Scanner(input);        StringTokenizer tmp = new StringTokenizer(input);        try{            if(tmp.countTokens()!=3){throw new BadCommandException();}            if(!scanner.next().equals("register")){throw new BadCommandException();}                success = true;        }catch(BadCommandException e){}    }    /**     * 執行命令的方法，如果命令執行不成功，拋出異常     * @return 返回成功與否     */    public boolean Execute(){                if(success)        {            username = scanner.next();            password = scanner.next();            if(!agenda.Register(username, password))success=false;          }        return success;    }    /**     * 打印方法     * @return 結果字符串     */    public String ToString()    {        return agenda.ToString("User");    }}