JFileChooser示例

例子演示JFileChooser的用法

import java.io.File;
import javax.swing.JButton;
import javax.swing.JFileChooser;
import javax.swing.JFrame;
import javax.swing.JOptionPane;
import javax.swing.filechooser.FileFilter;


public class Hello extends JFrame {

     private static final long serialVersionUID = 1L;

     private JFrame jFrame = null;

     private JButton jFileButton = null;

     public Hello() {
   // TODO Auto-generated constructor stub
  jFrame = this;
   this.setSize(496, 260);
  jFileButton = new JButton( "导入文件");
  jFrame.add(jFileButton);
  jFileButton.addMouseListener( new java.awt.event.MouseAdapter() {
       public void mouseClicked(java.awt.event.MouseEvent e) {
     // System.out.println("mouseClicked()"); // TODO
     // Auto-generated Event stub mouseClicked()
    JFileChooser jfChooser = new JFileChooser( "D:\\..\\..");
    jfChooser.setDialogTitle( "导入文件");
    jfChooser.setFileFilter( new FileFilter() {
        @Override
         public boolean accept(File f) {
       if (f.getName().endsWith( "data") || f.isDirectory())
           return true;
       return false;
        }
        @Override
         public String getDescription() {
       // TODO Auto-generated method stub
       return "数值型数据(*.data)";
        }
    });
     int result = jfChooser.showOpenDialog(jFrame);
     if (result == JFileChooser.APPROVE_OPTION) { // 确认打开

        File fileIn = jfChooser.getSelectedFile();

         if (fileIn.exists()) {
      JOptionPane.showMessageDialog(jFrame, "OPEN"); // 提示框
        } else {
        }
    } else if (result == JFileChooser.CANCEL_OPTION) {
        System.out.println( "Cancel button is pushed.");
    } else if (result == JFileChooser.ERROR_OPTION) {
        System.err.println( "Error when select file.");
    }

      }
  });
    }
}