您如何从 Jtextfield 中的用户获取 2 个输入？

问题描述

我希望用户输入玩家 1 的名称并按 Enter，然后让文本字段再次为空，以便用户可以输入玩家 2 的名称。到目前为止，我只能获取玩家的姓名作为输入但不是玩家二。由于某种原因，我的代码不起作用。任何帮助将不胜感激。提前致谢。

import java.lang.*;
import java.util.*;
import java.util.List;
import java.io.*;
import java.awt.*;
import java.awt.event.*;
import java.awt.geom.*;
import javax.swing.*;

public class mainClass extends JPanel implements ActionListener {
    
    //constant variables to use

    static String playerOneName;
    static String playerTwoName;
    static boolean playerOneNameSet;
    static boolean playerTwoNameSet;
    
    
    private static final long serialVersionUID = 1L;
    
    public mainClass() {
        
    }
    
    public void paintComponent(Graphics g) {
        
        //set background color to white
        g.setColor(Color.white);
        g.fillRect(0,getWidth(),getHeight());
        
      }

    public static void initializeBoard() {
    }
    public static void main(String[] args) {
        // title of frame
        JFrame frame = new JFrame("Risk");

            JTextField textField = new JTextField(20);
            frame.add(textField,BorderLayout.SOUTH);
            
            JLabel welcome = new JLabel("");
            welcome.setText("Please Enter name for Player 1 in the text box at the bottom");
            frame.add(welcome,BorderLayout.NORTH);
            
            //action listener listens for enter key
            textField.addActionListener(new java.awt.event.ActionListener() {
                public void actionPerformed(java.awt.event.ActionEvent evt) {
                    playerOneName= textField.getText();
                    System.out.println(playerOneName);
                    playerOneNameSet = true;
                    System.out.println(playerOneNameSet);
                }
            });
            if(playerOneNameSet == true) {
            JTextField textField2 = new JTextField(20);
            frame.add(textField2,BorderLayout.SOUTH);
            
            JLabel welcome2 = new JLabel("");
            welcome2.setText("Please Enter name for Player 2 in the text box at the bottom");
            frame.add(welcome2,BorderLayout.NORTH);
            
            //action listener listens for enter key
            textField2.addActionListener(new java.awt.event.ActionListener() {
                public void actionPerformed(java.awt.event.ActionEvent evt) {
                    playerTwoName= textField2.getText();
                    System.out.println(playerTwoName);
                    playerTwoNameSet = true;
                    System.out.println(playerTwoNameSet);
                }
            });
            }
            
        
        
        // make sure it closes correctly
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        
        //frame size in pixels
        final int FRAME_WIDTH = 1000;    
        final int FRAME_HEIGHT = 700;
        frame.setSize(FRAME_WIDTH,FRAME_HEIGHT);
        
        // makes sure the frame is visible
        frame.setVisible(true);
        mainClass main = new mainClass();
        frame.add(main);
        
        
    }
    @Override
    public void actionPerformed(ActionEvent e) {
        
    }
}

解决方法

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