java - 检索在 JDialog 中输入的输入

Question

我扩展了 JDialog 以创建一个自定义对话框，用户必须在其中填写一些字段:

我应该如何检索输入的数据？

我想出了一个可行的解决方案。它模仿 JOptionPane 但由于涉及静态字段，我做它的方式对我来说看起来很难看......这是我的代码:

public class FObjectDialog extends JDialog implements ActionListener {
    private static String name;
    private static String text;
    private JTextField fName;
    private JTextArea fText;
    private JButton bAdd;
    private JButton bCancel;

    private FObjectDialog(Frame parentFrame) {
        super(parentFrame,"Add an object",true);
        // build the whole dialog
        buildNewObjectDialog(); 
        setVisible(true);
    }

    @Override
    public void actionPerformed(ActionEvent ae) {
        if(ae.getSource()==bAdd){
            name=fName.getText();
            text=fText.getText();
        }
        else {
            name=null;
            text=null;
        }
        setVisible(false);
        dispose();
    }

    public static String[] showCreateDialog(Frame parentFrame){
        new FObjectDialog(parentFrame);
        String[] res={name,text};
        if((name==null)||(text==null))
            res=null;
        return res;
    }
}

正如我所说，这可以正常工作，但我想这可能会引发严重的并发问题......

有没有更简洁的方法来做到这一点？在 JOptionPane 中是如何完成的？

Answer 1

如果我这样做，我总是这样工作:

FObjectDialog fod = new FObjectDialog(this);
fod.setLocationRelativeTo(this); // A model doesn't set its location automatically relative to its parent  
fod.setVisible(true);
// Now this code doesn't continue until the dialog is closed again.
// So the next code will be executed when it is closed and the data is filled in.
String name = fod.getName();
String text = fod.getText();
// getName() and getText() are just two simple getters (you still have to make) for the two fields their content
// So return textField.getText();

希望对您有所帮助!
PS:你的程序看起来很棒!