Question

我需要读取配置文件并将数据（它由键值对组成）放入一些我必须在JFrame中动态创建的textField中。之后我想修改textFields并再次将更改保存到文件中。

到目前为止我所拥有的：

        FileConfiguration fileConfig = new PropertiesConfiguration(new File("xesfile.properties"));

        Iterator<String> keys = fileConfig.getKeys();
        while (keys.hasNext()) {
            String singleKey = keys.next();

            //for the case that a key has multiple values
            if (fileConfig.getProperty(singleKey).getClass().equals(ArrayList.class)) {
                ArrayList<String> blaArray = (ArrayList<String>) fileConfig.getProperty(singleKey);
                for (int i = 0; i < blaArray.size(); i++) {
                    this.keyLabel = new JLabel(this.nameKeyLabel + this.count);
                    this.entityLabel = new JLabel(this.nameEntityLabel + this.count);
                    this.keyTextField = new JTextField();
                    this.keyTextField.setName(this.nameKeyTextField + this.count);
                    this.keyTextField.setText(singleKey);
                    this.entityTextField = new JTextField();
                    this.entityTextField.setName(this.nameEntityTextField + this.count);
                    this.entityTextField.setText(blaArray.get(i));
                    this.count++;
                    this.configFrame.add(this.keyLabel);
                    this.configFrame.add(this.keyTextField);
                    this.configFrame.add(this.entityLabel);
                    this.configFrame.add(this.entityTextField);
                    this.configFrame.revalidate();
                    this.configFrame.repaint();
                    this.configFrame.pack();
                }
            //for the case a key has a single value
            } else {
                this.keyLabel = new JLabel(this.nameKeyLabel + this.count);
                this.entityLabel = new JLabel(this.nameEntityLabel + this.count);
                this.keyTextField = new JTextField();
                this.keyTextField.setName(this.nameKeyTextField + this.count);
                this.keyTextField.setText(singleKey);
                this.entityTextField = new JTextField();
                this.entityTextField.setName(this.nameEntityTextField + this.count);
                this.entityTextField.setText((String) fileConfig.getProperty(singleKey));
                this.count++;
                this.configFrame.add(this.keyLabel);
                this.configFrame.add(this.keyTextField);
                this.configFrame.add(this.entityLabel);
                this.configFrame.add(this.entityTextField);
                this.configFrame.revalidate();
                this.configFrame.repaint();
                this.configFrame.pack();
            }

        }

如您所见，在while循环的每次传递中都会反复创建TextField。但是我需要访问我在循环的第一遍中为示例创建的textFields。如果我将getName()访问TextFields，我们会被退回，但事实并非如此。任何人都可以帮助我吗？

Answer 1

将TextField存储在Map中，其中键作为名称，值为TextField对象本身。您可以稍后使用以下方式访问它：

TextField textField = map.get("myField");

Answer 2

这很简单

// In loop
1) Create the component.
2) Add it to an Generic ArrayList
3) You can also attach an actionListener to the component in loop if you want.
// Out of loop
4) Iterate the ArrayList and access the desire component.

在循环中创建Swing组件并访问它们

2 个答案: