為按鈕jbselect增加監聽：

jbselect.addActionListener(new ActionListener() {
							@Override
							public void actionPerformed(ActionEvent e) {
								
								jchooser1 = new JFileChooser();<span style="white-space:pre">	</span>//JFileChooser控制元件
								jchooser1.setCurrentDirectory(new File("c:/"));
								int index = jchooser1.showOpenDialog(getContentPane());
								if(index == JFileChooser.APPROVE_OPTION){
									@SuppressWarnings("unused")
									File selectedFile = jchooser1.getSelectedFile();
									jtxdb.setText(jchooser1.getSelectedFile().getAbsolutePath());
									dblist = ck.DBList(jtxdb.getText());
								}
							}
						});