更改文本字段和组合框后 JTable 不会更改

Question

你好，我正在做一个程序，首先打开设置菜单，如图所示 enter image description here

首先我 select 从打开的 jcombox 和 jdialog 中选择我想要的游戏 window 来设置名称。

这是它的代码：

public class SettingMenu extends JFrame   {

boolean is3players = false, is4players = false;

BufferedImage settingImage;

String[] playersChoises = { "2", "3", "4" };
String[] sizeChoises = { "30", "50", "100" };

JComboBox comboBoxPlayers;
JComboBox comboBoxSizes;

static JButton startGame, writeNames;

public SettingMenu() {


    JLabel howManyPlayersText = new JLabel("How many players ?");


    comboBoxPlayers = new JComboBox(playersChoises);

    if (comboBoxPlayers.getSelectedItem().equals("3")) {

        is3players = true;
    }

    if (comboBoxPlayers.getSelectedItem().equals("4")) {

        is3players = true;
        is4players = true;
    }

    JLabel writeNamesText = new JLabel("Set names of playes");

    writeNames = new JButton("set names");

    JLabel sizeOfBoredText = new JLabel("What the size of the bored ?");


    comboBoxSizes = new JComboBox(sizeChoises);

    startGame = new JButton("Click to start the game!");

    howManyPlayersText.setBounds(177, 200, 270, 100);
    comboBoxPlayers.setBounds(230, 270, 100, 30);
    writeNamesText.setBounds(230, 210, 380, 250);
    writeNames.setBounds(240, 350, 100, 36);
    sizeOfBoredText.setBounds(177, 376, 300, 100);
    comboBoxSizes.setBounds(230, 450, 100, 30);
    startGame.setBounds(200, 500, 200, 44);

    add(howManyPlayersText);
    add(comboBoxPlayers);
    add(writeNamesText);
    add(writeNames);
    add(sizeOfBoredText);
    add(comboBoxSizes);
    add(startGame);

    setVisible(true);
}



public static void main(String[] args) {
    // open this class
    new SettingMenu();

    // when i click on startgame bottun open the class of the game

    startGame.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent e) {
            new LeadersAndSnake_Project201();
        }
    });

// 当我点击 writeNames bottun 打开对话框 class 时

    writeNames.addActionListener(new ActionListener() {
        @Override
        public void actionPerformed(ActionEvent e) {
            new SetNames();
        }
    });

}

}

这是 Set Names class 打开 set names window enter image description here

class SetNames extends JDialog {

public JTextField setNamePlayer1, setNamePlayer2, setNamePlayer3, setNamePlayer4;

public SetNames() {
    this.setSize(280, 151);
    this.setLocationRelativeTo(null);

    JLabel name1 = new JLabel("Set Player's 1 name : ");
    setNamePlayer1 = new JTextField(7);
    setNamePlayer1.setText("Player 1");

    JLabel name2 = new JLabel("Set Player's 2 name : ");
    setNamePlayer2 = new JTextField(7);
    setNamePlayer2.setText("Player 2");

    JPanel panelOfDialog_1 = new JPanel();

    panelOfDialog_1.add(name1);
    panelOfDialog_1.add(setNamePlayer1);

    JPanel panelOfDialog_2 = new JPanel();

    panelOfDialog_2.add(name2);
    panelOfDialog_2.add(setNamePlayer2);

    JPanel panelOfDialog_3 = new JPanel();

    JButton okBotton = new JButton("OK");

    add(okBotton);

    okBotton.addActionListener(new ActionListener() {

        public void actionPerformed(ActionEvent e) {

            setNamePlayer1 = new JTextField(setNamePlayer1.getText());
            setNamePlayer2 = new JTextField(setNamePlayer2.getText());
            setVisible(false);

        }
    });

    panelOfDialog_3.add(okBotton);

    add(panelOfDialog_1, BorderLayout.NORTH);

    add(panelOfDialog_2, BorderLayout.CENTER);

    add(panelOfDialog_3, BorderLayout.AFTER_LAST_LINE);

    this.setVisible(true);

}

}

这是游戏的大 class 但我只是把重要的东西放在这里 :

class LeadersAndSnake_Project201 extends  JFrame implements ActionListener{

// Here I made an object of Setting Menu class for use the varible that it has
 SettingMenu obj1 = new SettingMenu();

// Here I made an object of Set Names  class to take the name inside the textfiled
 SetNames obj2 = new SetNames();


 public LeadersAndSnake_Project201() {

    // -----------------left panel------------------------------

        JPanel leftPanel = new JPanel();
        GroupLayout groupLayout = new GroupLayout(leftPanel);
        leftPanel.setLayout(groupLayout);


        //---------------------------panel 1 for information player 1 -------------------------------------

        JPanel panel1  = new JPanel();


        ImageIcon imageMan1 = new ImageIcon("man1.png");
        JLabel imageMan11 = new JLabel("", imageMan1, JLabel.CENTER);


        JLabel player1text = new JLabel(obj2.setNamePlayer1.getText());



        panel1.add(imageMan11);
        panel1.add(player1text);

        //---------------------------panel 2 for information player 2------------------------------------

        JPanel panel2 = new JPanel();


        ImageIcon imageMan2 = new ImageIcon("man2.png");
        JLabel imageMan22 = new JLabel("", imageMan2, JLabel.CENTER);
        JLabel player2text = new JLabel(obj2.setNamePlayer2.getText());

        panel2.add(imageMan22);
        panel2.add(player2text);

        //---------------------------panel 3 for information player 3-------------------------------------

        JPanel panel3 = new JPanel();

         if(obj.is3 == true){


             ImageIcon imageMan3 = new ImageIcon("man3.png");
        JLabel imageMan33 = new JLabel("", imageMan3, JLabel.CENTER);
        JLabel player3text = new JLabel("Player 3");
        player2text.setFont(fontText);
        panel3.add(imageMan33);
        panel3.add(player3text);


         }

 }

}

左面板是我的问题即使我尝试在文本文件中更改播放器 1 和播放器 2 的 jlable 也没有改变，第二个问题是即使我 select 选择“3”，播放器 3 的面板也没有出现来自组合框 .

enter image description here

Answer 1

尝试在更改元素后在框架上调用 .pack()。

编辑

您没有更改标签的代码。您需要的是将标签存储在一个变量中，就像您对其他组件所做的那样，并在 SetNames() 的 okButton 上的 ActionListener 中，而不是对那里的 TextFields 做任何事情（看起来不对），更新标签文字.

所以，例如

class SetNames extends JDialog {

[...]
public JButton okButton; // save okButton so others can add listeners

}


class LeadersAndSnake_Project201 extends  JFrame implements ActionListener{


// Here I made an object of Set Names  class to take the name inside the textfiled
 SetNames obj2 = new SetNames();


 public LeadersAndSnake_Project201() {
[...]
 obj2.okButton.addActionListener(new ActionListener(){/*update labels*/});

 }}

更改文本字段和组合框后 JTable 不会更改

JLable not change after change the TextFiled and also the combox

java

swing

jlabel

jcombobox