絢月 is learning JAVA.

import java.awt.event.ActionEvent;import java.awt.event.ActionListener;import java.io.File;import javax.swing.JButton;import javax.swing.JFileChooser;import javax.swing.JFrame;import javax.swing.JLabel;@SuppressWarnings("serial")public class Filechooser extends JFrame implements ActionListener{JButton open=null;public static void main (String[] args){new Filechooser();//构造一个指向用户的默认目录Filechooser}public Filechooser(){open=new JButton("打开");this.add(open);this.setBounds(100,100,100,100);this.setVisible(true);this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);open.addActionListener(this);}public void actionPerformed(ActionEvent e){JFileChooser j=new JFileChooser();j.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES);//设置Filechooserj.showDialog(new JLabel(),"选择");// 弹出具有自定义 approve 按钮的自定义文件选择器对话框File file=j.getSelectedFile();if(file.isDirectory()){System.out.println("文件夹"+file.getAbsolutePath());}else if(file.isFile()){System.out.println("文件夹"+file.getAbsolutePath());}System.out.println(j.getSelectedFile().getName());}}<img src="?watermark/2/text/aHR0cDovL2Jsb2cuY3Nkbi5uZXQvYXlha2FrYXpl/font/5a6L5L2T/fontsize/400/fill/I0JBQkFCMA==/dissolve/70/gravity/SouthEast" alt="" />

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打掉的应是脆弱的铁屑，锻成的将是锋利的钢刀。