弹框代码

package com.edu.demo;

import java.util.*;
import java.io.*;

import javax.swing.JFileChooser;
import javax.swing.JOptionPane;

public class ReadFileUsingJFileChooser {

/**
     * @param args
     * @throws Exception
     */
    public static void main(String[] args) throws Exception {
        // TODO Auto-generated method stub
        String inputValue = JOptionPane.showInputDialog("Please input a value");
    }

}