如何从其他面板从 JTextField 获取输入

Question

我是使用 JTextFields 的新手，对如何从 3 个不同的面板获取输入感到好奇。小组将从输入中获取数字并对分数进行平均。为此，我想访问所有 3 个面板来进行数学计算。我有一个面板，用于计算我想要平均的三个不同人的分数。因此，我想获取 mattsTotalScore 并将其与 timsTotalScore 和 BensTotalScore 相加，并使平均值出现在第四个面板上的按钮之后。

import javax.swing.*;
import java.awt.*;

public class MattPanel extends JPanel {

    public MattPanel(){
        Dimension size = getPreferredSize();
        size.width = 250;
        setPreferredSize(size);
        setBorder(BorderFactory.createTitledBorder("Matt's Scores"));

        JLabel memMatt = new JLabel("MEMORABILITY :");
        JTextField textMemMattPane = new JTextField(10);

        JLabel comMatt = new JLabel("COMPOSITION :");
        JTextField textComMattPane = new JTextField(10);

        JLabel mixMatt = new JLabel("MIX/MASTER :");
        JTextField textMixMattPane = new JTextField(10);

        JLabel soundMatt = new JLabel("SOUND DESIGN :");
        JTextField textSoundMattPane = new JTextField(10);

        JLabel enjoyMatt = new JLabel("ENJOYMENT :");
        JTextField textEnjoyMattPane = new JTextField(10);

        setLayout(new GridBagLayout());

        GridBagConstraints gc = new GridBagConstraints();

        ///First Column ///////////////////////
        gc.anchor = GridBagConstraints.LINE_END;
        gc.weightx = 0.5; gc.weighty = 0.5;
        gc.gridx = 0; gc.gridy = 0;
        add(memMatt, gc);

        gc.gridx = 0; gc.gridy = 1;
        add(comMatt, gc);

        gc.gridx = 0; gc.gridy = 2;
        add(mixMatt, gc);

        gc.gridx = 0; gc.gridy = 3;
        add(soundMatt, gc);

        gc.gridx = 0; gc.gridy = 4;
        add(enjoyMatt, gc);

        //Second Column //////////////////////
        gc.anchor = GridBagConstraints.LINE_START;
        gc.gridx = 1; gc.gridy = 0;
        add(textMemMattPane,gc);

        gc.gridx = 1; gc.gridy = 1;
        add(textComMattPane,gc);

        gc.gridx = 1; gc.gridy = 2;
        add(textMixMattPane,gc);

        gc.gridx = 1; gc.gridy = 3;
        add(textSoundMattPane,gc);

        gc.gridx = 1; gc.gridy = 4;
        add(textEnjoyMattPane,gc);
    }
}

Answer 1

您可以尝试使用 JPanel 中的 getComponents() 方法来获取所有组件，尽管您必须以某种方式识别 TextField，例如：

MattPanel panel = new MattPanel();
int sum = 0;
int nr = 0;
for(Component comp : panel.getComponents()){
    if(comp instanceof JTextField){ 
        String text = ((JTextField)comp).getText();
        sum += Integer.parseInt(text);
        nr ++;
    }
}
double avg = sum/nr;