java - 在JTree中显示系统中的所有驱动器

Question

这是我的代码，我无法在jtree中显示当前系统中的所有驱动器，它返回的只是一些随机的java文件，我是一个初学者，不太了解它是如何完成的，正在等待帮助..

import java.awt.GridLayout;
import java.io.File;
import javax.swing.JFrame;
import javax.swing.JPanel;
import javax.swing.JTree;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.tree.TreeSelectionModel;


public class JTreeLits extends JPanel
{
 JTree tree;
 public JTreeLits()
 {
        super(new GridLayout(1,0));
        DefaultMutableTreeNode rooter = new DefaultMutableTreeNode("FileSystem");
        DefaultMutableTreeNode parent;
        File [] roots = File.listRoots();
        parent = new DefaultMutableTreeNode(roots);
        rooter.add(parent);

        tree = new JTree(rooter);
        tree.getSelectionModel().setSelectionMode(TreeSelectionModel.SINGLE_TREE_SELECTION);
        add(tree);
 }
 private static void createAndShowGUI()
 {
        JFrame frame = new JFrame("TreeDemo");
        frame.setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
        frame.add(new JTreeLits());
        frame.pack();
        frame.setVisible(true);
        frame.setSize(250,400);
 }
 public static void main(String[] args)
 {
    createAndShowGUI();
 }
}  

Answer 1

查看FileSystemView.getRoots() ¹，其中:

Returns all root partitions on this system. For example, on Windows, this would be the "Desktop" folder, while on DOS this would be the A: through Z: drives.

1. 如File Browser GUI中所示.