Question

import java.io.File;
import java.io.IOException;
import java.util.ArrayList;
import java.util.Scanner;
import javax.swing.JOptionPane;

public class Test {
    private static ArrayList<Countries> arr = new ArrayList<Countries>();
    private static ArrayList<Countries> d = new ArrayList<Countries>();
    static String country;
    static String capital;
    static String cities;
    static String cevap;
    static int score =0;


    public static void main(String args[]) throws IOException{
        Scanner keybord = new Scanner(System.in);
        arr = new ArrayList<Countries>();
        d = read("data.txt");

         for(int i = 0; i < d.size(); i++){
             System.out.print( d.get(i).toString());
             cevap = keybord.nextLine();
             if(cevap.equalsIgnoreCase(d.get(i).getCapital())){
                 System.out.println ("The answer is true!\nYou win 10 points");
             score += 10;
             }
             else{
                 System.out.println("The answer is not true" + " The answer is " + d.get(i).getCapital() + "\nYou loose 10 points");
                 score -= 10;
             }
             System.out.println("You're score is: " + score);
             System.out.println();
         }
    }



    public static ArrayList<Countries> read(String filename) throws IOException{
        Scanner scan = new Scanner(new File(filename));
        while(scan.hasNext()){
            country = scan.nextLine(); //System.out.println(country);
            String cities1 = scan.nextLine(); //System.out.println(cities1);
            String cities2 = scan.nextLine(); //System.out.println(cities2);
            String cities3 = scan.nextLine(); //System.out.println(cities3);
            String cities4 = scan.nextLine(); //System.out.println(cities4);
            String capital = scan.nextLine(); //System.out.println(capital);
            Countries c = new Countries(country, cities1, cities2, cities3, cities4, capital); 
            arr.add(c);
            scan.nextLine();
        }
        return arr;
    }



}

为了使这个程序的Gui我应该改变主要部分，因为它在下面。因为我认为从我读取的数据中读取和初始化变量会更方便。或者我应该为Gui创建另一个类吗？

public static void main(String args[]) throws IOException{
        Scanner keybord = new Scanner(System.in);
        arr = new ArrayList<Countries>();
        d = read("data.txt");

         for(int i = 0; i < d.size(); i++){
             lcountry = new JLabel(d.get(i).getCity1());
             label1 = new JLabel(d.get(i).getCity1());
             label2 = new JLabel(d.get(i).getCity2());
             label3 = new JLabel(d.get(i).getCity3());
             label4 = new JLabel(d.get(i).getCity4());

Answer 1

不，我建议将所有UI内容封装在一个单独的类中。如果你把它放在一个主方法中，它就不那么有用了。

事实上，这适用于所有课程。主方法应该非常小，并且只需创建执行实际工作的类的实例。如果主要是大的，你做错了。

无论您使用文字还是图形用户界面，您的问题都应该可以使用。当你可以将文本UI交换为图形UI并且一切仍然有效时，你可以告诉你已经很好地封装了东西。它被称为封装和分层。如果你不能轻易交换用户界面，那就错了。

我应该创建一个新类来制作代码的gui吗？

1 个答案: