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2-3 Tree Archiv

Posted on 2004-10-12
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Last Modified: 2010-03-31
Hello!

I'm a student andi have a little problem with my homework. we have to build a small archiv for example mp3 or doc files..... I have my gui ready and now i have a small problem, i have to develop a 2-3 tree. The tree isn't the problem. The Problem is, how can i insert the values in the tree? That the informations about file don't get lose. and how can i display the informations on the gui? give it at swing method like "excel-look"? How can i change the order?

Thank you

Best regards
mystixs
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Question by:mystixs
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15 Comments
 
LVL 86

Expert Comment

by:CEHJ
ID: 12284861
See DefaultMutableTreeNode
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Author Comment

by:mystixs
ID: 12284908
Has everyone an example? for the tree or for displaying the data. it can be another program, but with a small "look-in" the program.
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LVL 6

Expert Comment

by:expertmb
ID: 12284923
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LVL 86

Expert Comment

by:CEHJ
ID: 12284925
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Author Comment

by:mystixs
ID: 12284956
I have already seen those tree's. But i mean an tree in the background for sorting the display data. the data should display like the following schedule:


---------------------------------------------------
|File1         |Date               |Time      |Title|
---------------------------------------------------
|File2         |Date               |Time      |Title|
---------------------------------------------------
|File3         |Date               |Time      |Title|
---------------------------------------------------
|File4         |Date               |Time      |Title|
---------------------------------------------------
|File5         |Date               |Time      |Title|
---------------------------------------------------

Do you know, what i mean?
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LVL 86

Expert Comment

by:CEHJ
ID: 12284963
That looks more like a table to me ;-)
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LVL 6

Expert Comment

by:expertmb
ID: 12285023
its not a tree , its table
>>But i mean an tree in the background for sorting the display data. have a collection which will hold these data for you.
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LVL 6

Expert Comment

by:expertmb
ID: 12285025
have a collection which will hold these data for you.
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LVL 86

Expert Comment

by:CEHJ
ID: 12285038
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Author Comment

by:mystixs
ID: 12285072
extpertmb, i would be nice, when you send me the data or have you the posibilty to upload the on a websever? that a can download me the data?
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LVL 5

Accepted Solution

by:
Naeemg earned 450 total points
ID: 12285215
use the following code according to ur requirements

import javax.swing.JTree;
import javax.swing.tree.DefaultMutableTreeNode;
import javax.swing.event.TreeSelectionListener;
import javax.swing.event.TreeSelectionEvent;
import javax.swing.tree.TreeSelectionModel;
import javax.swing.tree.DefaultTreeCellRenderer;
import javax.swing.ImageIcon;
import java.net.URL;
import java.io.IOException;
import javax.swing.JEditorPane;
import javax.swing.JScrollPane;
import javax.swing.JSplitPane;
import javax.swing.JFrame;
import java.awt.*;
import java.awt.event.*;

public class Tree extends JFrame {
    //private JEditorPane htmlPane;
    //private static boolean DEBUG = false;
    //private URL helpURL;

    public Tree() {
        //super("TreeIconDemo");

        //Create the nodes.
        DefaultMutableTreeNode top = new DefaultMutableTreeNode("The Java Series");
        createNodes(top);

        //Create a tree that allows one selection at a time.
        final JTree tree = new JTree(top);
        tree.getSelectionModel().setSelectionMode
                (TreeSelectionModel.SINGLE_TREE_SELECTION);


        //Create the scroll pane and add the tree to it.
        JScrollPane treeView = new JScrollPane(tree);


        //Add the scroll panes to a split pane.
        JSplitPane splitPane = new JSplitPane(JSplitPane.VERTICAL_SPLIT);
        splitPane.setTopComponent(treeView);
        splitPane.setPreferredSize(new Dimension(500, 300));

        //Add the split pane to this frame.
        getContentPane().add(splitPane, BorderLayout.CENTER);
            tree.setShowsRootHandles( true );
    }



    private void createNodes(DefaultMutableTreeNode top) {
        DefaultMutableTreeNode category = null;
        DefaultMutableTreeNode book = null;

        category = new DefaultMutableTreeNode("Books for Java Programmers");
        top.add(category);

        //original Tutorial
        book = new DefaultMutableTreeNode("The Java Tutorial: Object-Oriented Programming for the Internet");
        category.add(book);

        //Tutorial Continued
        book = new DefaultMutableTreeNode("The Java Tutorial Continued: The Rest of the JDK");
        category.add(book);

        //JFC Swing Tutorial
        book = new DefaultMutableTreeNode("The JFC Swing Tutorial: A Guide to Constructing GUIs");
        category.add(book);

        //Arnold/Gosling
        book = new DefaultMutableTreeNode("The Java Programming Language");
        category.add(book);

        //FAQ
        book = new DefaultMutableTreeNode("The Java FAQ");
        category.add(book);

        //Chan/Lee
        book = new DefaultMutableTreeNode("The Java Class Libraries: An Annotated Reference");
        category.add(book);

        //Threads
        book = new DefaultMutableTreeNode("Concurrent Programming in Java: Design Principles and Patterns");
        category.add(book);

        category = new DefaultMutableTreeNode("Books for Java Implementers");
        top.add(category);

        //VM
        book = new DefaultMutableTreeNode("The Java Virtual Machine Specification");
        category.add(book);

        //Language Spec
        book = new DefaultMutableTreeNode("The Java Language Specification");
        category.add(book);
    }



    public static void main(String[] args) {
        JFrame frame = new Tree();

        frame.addWindowListener(new WindowAdapter() {
            public void windowClosing(WindowEvent e) {
                System.exit(0);
            }
        });

        frame.pack();
        frame.setVisible(true);
    }
}

//Naeem Shehzad Ghuman
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LVL 86

Expert Comment

by:CEHJ
ID: 12290419
?
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LVL 6

Expert Comment

by:expertmb
ID: 12294342
strange. moderator/venabili can you plz look into such questions.
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