java - 随机颜色游戏、数组和输入

Question

所以我遇到了一些麻烦。我似乎无法弄清楚分配随机颜色的问题(请参阅注释掉的部分)。还有关于在正确回答后如何从上一个问题中删除文本的任何建议？任何帮助将不胜感激。

游戏驱动类

public class MemoryGame {

public static void main(String[] args) {

   Questions q = new Questions();


   }
}

---

import javax.swing.*;
import java.awt.*;
import java.awt.event.*;
import java.util.Random;

public class Questions{

Random r = new Random();

private JFrame mainwindow;
private JLabel label1;
private JTextField txtQ1;
int num = 1;
String[] solution = new String[5];
String[] colors = {"red","green","blue","yellow","brown","black","purple","white","orange","grey"};

//for (int i = 0; i < solution.length; i++)
// {
//    solution[i] = colors[r.nextInt(10)];
//}


public Questions()
{
    JOptionPane.showMessageDialog(null,"How good is your memory?\nTry to memorize this color sequence:\n"+solution);

    createContents();

    mainwindow.setVisible(true);
}

private void createContents()
{
    mainwindow = new JFrame();
    mainwindow.setSize(600, 400);
    mainwindow.setTitle("Memory Game");
    mainwindow.setDefaultCloseOperation(mainwindow.EXIT_ON_CLOSE);
    mainwindow.setLayout(new FlowLayout());

    label1 = new JLabel();
    txtQ1 = new JTextField(15);
    label1.setText("Enter color number: "+num);

    //Add Action to text box
    txtQ1.addActionListener(new QuestionListener());

    mainwindow.add(label1);
    mainwindow.add(txtQ1);


}

public class QuestionListener implements ActionListener
{
    public void actionPerformed (ActionEvent e)
    {


        String guess = "";

        guess = txtQ1.getText();

        if (colors[num-1].equalsIgnoreCase(guess))
        {
            System.out.println("Congratulations continue to next question.");
            num++;

            label1.setText("Enter color number: "+num);
        }
        else
        {
            System.out.println("Sorry wrong color.");
        }

        if (num == 6)
        {
            label1.setText("Congratulations, Your memory is perfect");
            txtQ1.setVisible(false);
        }


    }
}

Answer 1

您需要将该循环放在方法或构造函数中。像这样的东西:

public Questions()
{
    for (int i = 0; i < solution.length; i++)
    {
        solution[i] = colors[r.nextInt(10)];
    }

    JOptionPane.showMessageDialog(null,"How good is your memory?\nTry to memorize this color sequence:\n"+solution);

    createContents();

    mainwindow.setVisible(true);
}

你可能还想使用

JOptionPane.showMessageDialog(null,"How good is your memory?\nTry to memorize this color sequence:\n" + Arrays.toString(solution));