JFileChooser fileChooser = new JFileChooser();
fileChooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
int returnVal = fileChooser.showOpenDialog(这里填调用的类);
if(returnVal == JFileChooser.APPROVE_OPTION) {
String n = new String(fileChooser.getSelectedFile().toString());//转换成String
}
JFileChooser chooser = new JFileChooser();
chooser.setFileSelectionMode(JFileChooser.DIRECTORIES_ONLY);
int returnVal = chooser.showOpenDialog(parent);
if(returnVal == JFileChooser.APPROVE_OPTION) {
System.out.println("You chose to open this file: " +
chooser.getSelectedFile().getName());
}