Java trees

[Maha Hassan]

Hi,

I want to represent the hierarchy of folder using java (not GUI) so that I can print the top level in it and all the details.

Is there a way to do that in Java, or do I have to impalement my own tree??

Thanks,

Maha

[Jesper de Jong]

Class java.io.File represents a path to a file or directory. It contains methods to list the subdirectories and files in a directory.

public void listDir(File dir) {
    File[] files = dir.listFiles();
    for (File f : files) {
        System.out.println(f.getPath());
 
        // Recursive call for subdirectories
        if (f.isDirectory()) {
            listDir(f);
        }
    }
}

[Maha Hassan]

I mean, I am reading a certain hierarchy(not form a directory) and I want to represent it in a tree form.

Is there a thing like that?

Thanks.

[Stan James]

You can use the Tree classes from Swing even if you don't have a GUI. See if any implementation of TreeNode works for you, or make your own. If you get stuck, post some code and we'll try to bump you along.

[Maha Hassan]

Thanks all for reply,

I used the implementations of binary tree to create my tree (not binary). I just removed the normal left and right children with array list to have more than one child

Thanks all.

Maha