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());
  }
}