似乎无法获得在Jtextfield中输入的文本并在按下"Submit“按钮时使用该文本替换JLabels
似乎无法获得在Jtextfield中输入的文本并在按下"Submit“按钮时使用该文本替换JLabels
提问于 2016-04-22 21:34:45
首先，对于糟糕的格式，我很抱歉，我还是个Java新手。但问题来了。我正在尝试用java做一个危险的游戏，而我才刚刚开始。我不知道如何从JTextfield中检索信息，它要求用户输入他们的姓名(在按下“开始”按钮之后)，并在用户按下“提交”按钮时用该文本替换JLabels中的"Player 1:“& "Player 2:”。答案似乎相当简单，但我却想不通，这非常令人沮丧。感谢您的帮助，谢谢！
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
class JeopardyCulminating implements ActionListener
{
JLabel mConversion, ints, fAndR, variableExp, algebra;
JLabel playerScore, one, two;
JLabel jeopardyTitle;
JTextField player1, player2;
JButton h11, h21, h31, h41, h51;
JButton h12, h22, h32, h42, h52;
JButton h13, h23, h33, h43, h53;
JButton h14, h24, h34, h44, h54;
JButton h15, h25, h35, h45, h55;
JButton startButton;
JFrame frame;
String zero = "0", zero1 = "0";
int playerCount = 2;
int scoreCounter = 0;
int score[][] = new int[playerCount][scoreCounter];
String jokes[][] = new String[100][100];
JeopardyCulminating()
{
// Setting the frame layout and setting the exit button
frame = new JFrame("GUI Jeopardy");
frame.setLayout(new FlowLayout());
frame.setSize(390,750);
frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
// Title label
jeopardyTitle = new JLabel("Welcome to The Game of Jeopardy! 8th-9th Grade Math Edition!");
jeopardyTitle.setFont(new Font("Serif", Font.PLAIN, 14));
// Creating the category labels
mConversion = new JLabel("<html>Measurement<br>Conversion</html>");
ints = new JLabel("Integers");
fAndR = new JLabel("<html>Fractions<br>& Rationals</html>");
variableExp = new JLabel("<html>Variable<br>Expressions</html>");
algebra = new JLabel("Algebra");
// JTextField keeping track of score
player1 = new JTextField(7);
player2 = new JTextField(7);
player1.addActionListener(this);
player1.setEditable(false);
player1.setText(zero);
player2.addActionListener(this);
player2.setEditable(false);
player2.setText(zero1);
// Score Labels
playerScore = new JLabel("Score:");
one = new JLabel("Player 1:");
two = new JLabel("Player 2:");
// Start Menu
startButton = new JButton("Start");
startButton.addActionListener(this);
// First column buttons
h11 = new JButton("$100a");
h11.addActionListener(this);
h11.setEnabled(false);
h21 = new JButton("$200a");
h21.addActionListener(this);
h21.setEnabled(false);
h31 = new JButton("$300a");
h31.addActionListener(this);
h31.setEnabled(false);
h41 = new JButton("$400a");
h41.addActionListener(this);
h41.setEnabled(false);
h51 = new JButton("$500a");
h51.addActionListener(this);
h51.setEnabled(false);
// Second column buttons
h12 = new JButton("$100b");
h12.addActionListener(this);
h12.setEnabled(false);
h22 = new JButton("$200b");
h22.addActionListener(this);
h22.setEnabled(false);
h32 = new JButton("$300b");
h32.addActionListener(this);
h32.setEnabled(false);
h42 = new JButton("$400b");
h42.addActionListener(this);
h42.setEnabled(false);
h52 = new JButton("$500b");
h52.addActionListener(this);
h52.setEnabled(false);
// Third column buttons
h13 = new JButton("$100c");
h13.addActionListener(this);
h13.setEnabled(false);
h23 = new JButton("$200c");
h23.addActionListener(this);
h23.setEnabled(false);
h33 = new JButton("$300c");
h33.addActionListener(this);
h33.setEnabled(false);
h43 = new JButton("$400c");
h43.addActionListener(this);
h43.setEnabled(false);
h53 = new JButton("$500c");
h53.addActionListener(this);
h53.setEnabled(false);
// Fourth column buttons
h14 = new JButton("$100d");
h14.addActionListener(this);
h14.setEnabled(false);
h24 = new JButton("$200d");
h24.addActionListener(this);
h24.setEnabled(false);
h34 = new JButton("$300d");
h34.addActionListener(this);
h34.setEnabled(false);
h44= new JButton("$400d");
h44.addActionListener(this);
h44.setEnabled(false);
h54 = new JButton("$500d");
h54.addActionListener(this);
h54.setEnabled(false);
// Fifth column buttons
h15 = new JButton("$100e");
h15.addActionListener(this);
h15.setEnabled(false);
h25 = new JButton("$200e");
h25.addActionListener(this);
h25.setEnabled(false);
h35 = new JButton("$300e");
h35.addActionListener(this);
h35.setEnabled(false);
h45 = new JButton("$400e");
h45.addActionListener(this);
h45.setEnabled(false);
h55 = new JButton("$500e");
h55.addActionListener(this);
h55.setEnabled(false);
frame.add(jeopardyTitle);
frame.add(mConversion);
frame.add(ints);
frame.add(fAndR);
frame.add(variableExp);
frame.add(algebra);
frame.add(h11);
frame.add(h12);
frame.add(h13);
frame.add(h14);
frame.add(h15);
frame.add(h21);
frame.add(h22);
frame.add(h23);
frame.add(h24);
frame.add(h25);
frame.add(h31);
frame.add(h32);
frame.add(h33);
frame.add(h34);
frame.add(h35);
frame.add(h41);
frame.add(h42);
frame.add(h43);
frame.add(h44);
frame.add(h45);
frame.add(h51);
frame.add(h52);
frame.add(h53);
frame.add(h54);
frame.add(h55);
frame.add(playerScore);
frame.add(one);
frame.add(player1);
frame.add(two);
frame.add(player2);
frame.add(startButton);
frame.setVisible(true);
}
// the problem is here:
public void actionPerformed(ActionEvent ae)
{
if(ae.getActionCommand().equals("Start"))
{
startButton.setVisible(false);
JLabel rules = new JLabel("Rules & How to Play:");
JLabel rules1 = new JLabel("*rules here*");
JLabel names = new JLabel("Enter player names: ");
JLabel player1 = new JLabel("Enter player 1's name:");
JLabel player2 = new JLabel("Enter player 2's name:");
JTextField playerName1 = new JTextField(15);
JTextField playerName2 = new JTextField(15);
playerName1.addActionListener(this);
playerName2.addActionListener(this);
JButton submitName = new JButton("Submit");
submitName.addActionListener(this);
frame.add(rules);
frame.add(rules1);
frame.add(names);
frame.add(player1);
frame.add(playerName1);
frame.add(player2);
frame.add(playerName2);
frame.add(submitName);
}
if(ae.getActionCommand().equals("Submit"))
{
h11.setEnabled(true);
h21.setEnabled(true);
h31.setEnabled(true);
h41.setEnabled(true);
h51.setEnabled(true);
h12.setEnabled(true);
h22.setEnabled(true);
h32.setEnabled(true);
h42.setEnabled(true);
h52.setEnabled(true);
h13.setEnabled(true);
h23.setEnabled(true);
h33.setEnabled(true);
h43.setEnabled(true);
h53.setEnabled(true);
h14.setEnabled(true);
h24.setEnabled(true);
h34.setEnabled(true);
h44.setEnabled(true);
h54.setEnabled(true);
h15.setEnabled(true);
h25.setEnabled(true);
h35.setEnabled(true);
h45.setEnabled(true);
h55.setEnabled(true);
jokes[0][0] = playerName1.getText();
jokes[0][1] = playerName2.getText();
one.setText(playerName1.getText());
two.setText(playerName2.getText());
}
}
public static void main(String args[])
{
SwingUtilities.invokeLater(new Runnable(){
public void run(){
new JeopardyCulminating();
}
});
}
}Stack Overflow用户
发布于 2016-04-22 21:52:37
您可以这样做：
submitName.addActionListener(new ActionListener() {
public void actionPerformed(ActionEvent e)
{
//Execute when button is pressed
one.setText(playerName1.getText());
two.setText(playerName2.getText());
}
}); 当按下submitName按钮时，将更容易和更清楚地了解发生了什么。
此外，最好将所有的列和行按钮放在一个列表中，然后迭代，如果你想在它们上创建操作，比如添加到框架或启用它们，它看起来更好，也更容易阅读。
祝你好运
页面原文内容由Stack Overflow提供。腾讯云小微IT领域专用引擎提供翻译支持
原文链接：
https://stackoverflow.com/questions/36795339
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