Java Swing组件文件选择器JFileChooser简单用法示例

package awtDemo;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();  }  public FileChooser(){    open=new JButton("open");    this.add(open);    this.setBounds(400, 200, 100, 100);    this.setVisible(true);    this.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);    open.addActionListener(this);  }  @Override  public void actionPerformed(ActionEvent e) {    // TODO Auto-generated method stub    JFileChooser jfc=new JFileChooser();    jfc.setFileSelectionMode(JFileChooser.FILES_AND_DIRECTORIES );    jfc.showDialog(new JLabel(), "选择");    File file=jfc.getSelectedFile();    if(file.isDirectory()){      System.out.println("文件夹:"+file.getAbsolutePath());    }else if(file.isFile()){      System.out.println("文件:"+file.getAbsolutePath());    }    System.out.println(jfc.getSelectedFile().getName());  }}