StackOverflow2013

Note that there are some explanatory texts on larger screens.

plurals

POHow to draw a tree representing a graph of connected nodes?
text
Body
copied!<p>I want to display a tree in a Java GUI, but I dont know how. The tree represents a graph of connected nodes, like this:</p> <p><img src="https://upload.wikimedia.org/wikipedia/commons/thumb/f/f7/Binary_tree.svg/300px-Binary_tree.svg.png" alt="image"></p> <p>I should say that I have my own tree class:</p> <pre><code>public class BinaryTree { private BinaryNode root; public BinaryTree( ) { root = null; } public BinaryTree( Object rootItem ) { root = new BinaryNode( rootItem, null, null ); } public BinaryTree( Object rootItem,BinaryNode a,BinaryNode b ) { root = new BinaryNode( rootItem, a, b ); } public int leavesCount(){ return BinaryNode.leavesCount(root); } public boolean equal(BinaryTree a,BinaryTree b){ return BinaryNode.equal(a.root, b.root); } public void printPreOrder( ) { if( root != null ) root.printPreOrder( ); } public void printInOrder( ) { if( root != null ) root.printInOrder( ); } public void printPostOrder( ) { if( root != null ) root.printPostOrder( ); } public void makeEmpty( ) { root = null; } public boolean isEmpty( ) { return root == null; } public void merge( Object rootItem, BinaryTree t1, BinaryTree t2 ) throws MergeAbrot { if( t1.root == t2.root && t1.root != null ) { throw new MergeAbrot("MergeAbrot"); } root=new BinaryNode( rootItem, t1.root, t2.root ); if( this != t1 ) t1.root = null; if( this != t2 ) t2.root = null; } public int size( ) { return BinaryNode.size( root ); } public int height( ) { return BinaryNode.height( root ); } } </code></pre> <p>I only want to draw the tree. How should I do?</p>

Querying!

Guidance

An individual column

Larger individual text columns get their own page to allow for proper reading.

SQuiL has stopped working due to an internal error.

If you are curious you may find further information in the browser console, which is accessible through the devtools (F12).

Reload