如何使用JFileChooser查找文件位置

javadoc
show中的示例显示了执行此操作的步骤：

JFileChooser chooser = new JFileChooser();FileNameExtensionFilter filter = new FileNameExtensionFilter(    "JPG & GIF Images", "jpg", "gif");chooser.setFileFilter(filter);int returnVal = chooser.showOpenDialog(parent);if(returnVal == JFileChooser.APPROVE_OPTION) {   System.out.println("You chose to open this file: " +        chooser.getSelectedFile().getName());}

那

chooser.getSelectedFile()