java - 如何验证输入的文本字段是否是java swing中的手机号码

Question

java swing中如何判断输入的Textfield是否为手机号码

Answer 1

无需求助于正则表达式。相反，请使用适当的组件。即 JFormattedTextField .

例子

import java.awt.FlowLayout;
import java.text.ParseException;
import javax.swing.JFormattedTextField;
import javax.swing.JFrame;
import javax.swing.SwingUtilities;
import javax.swing.text.MaskFormatter;

public final class FormattedTextFieldDemo {

    public static void main(String[] args){
        SwingUtilities.invokeLater(new Runnable(){
            @Override
            public void run() {
                try {
                    createAndShowGUI();
                } 
                catch (ParseException e) {
                    e.printStackTrace();
                }               
            }
        });
    }

    private static void createAndShowGUI() throws ParseException{
        final JFrame frame = new JFrame();
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.setLayout(new FlowLayout());
        frame.add(new JPhoneNumberFormattedTextField());
        frame.pack();
        frame.setLocationRelativeTo(null);
        frame.setVisible(true);
    }

    private static final class JPhoneNumberFormattedTextField extends JFormattedTextField{

        private static final long serialVersionUID = 8997075146338662662L;

        public JPhoneNumberFormattedTextField() throws ParseException{
            super(new MaskFormatter("(###) ###-####"));
            setColumns(8);
        }

    }

}

如果您需要特定于语言环境的格式，请更改 MaskFormatter 实例。