Add generic Node classes (#2782)

Co-authored-by: Andrii Siriak <siryaka@gmail.com>

DevUtils/Nodes/LargeTreeNode.java

@@ -0,0 +1,72 @@
+package DevUtils.Nodes;
+
+import java.util.Collection;
+
+/**
+ * {@link TreeNode} extension that holds a {@link Collection}
+ * of refrences to child Nodes.
+ * 
+ * @param <E> The type of the data held in the Node.
+ * 
+ * @author <a href="https://github.com/aitorfi">aitorfi</a>
+ */
+public class LargeTreeNode<E> extends TreeNode<E> {
+    /** {@link Collection} that holds the Nodes' child nodes. */
+    private Collection<LargeTreeNode<E>> childNodes;
+
+    /** Empty contructor. */
+    public LargeTreeNode() {
+        super();
+    }
+
+    /**
+     * Initializes the Nodes' data.
+     * 
+     * @param data Value to which data will be initialized.
+     * @see TreeNode#TreeNode(Object)
+     */
+    public LargeTreeNode(E data) {
+        super(data);
+    }
+
+    /**
+     * Initializes the Nodes' data and parent node reference.
+     * 
+     * @param data Value to which data will be initialized.
+     * @param parentNode Value to which the nodes' parent reference will be set.
+     * @see TreeNode#TreeNode(Object, Node)
+     */
+    public LargeTreeNode(E data, LargeTreeNode<E> parentNode) {
+        super(data, parentNode);
+    }
+
+    /**
+     * Initializes the Nodes' data and parent and child nodes references.
+     * 
+     * @param data Value to which data will be initialized.
+     * @param parentNode Value to which the nodes' parent reference will be set.
+     * @param childNodes {@link Collection} of child Nodes.
+     * @see TreeNode#TreeNode(Object, Node)
+     */
+    public LargeTreeNode(E data, LargeTreeNode<E> parentNode, Collection<LargeTreeNode<E>> childNodes) {
+        super(data, parentNode);
+        this.childNodes = childNodes;
+    }
+
+    /**
+     * @return True if the node is a leaf node, otherwise false.
+     * @see TreeNode#isLeafNode()
+     */
+    @Override
+    public boolean isLeafNode() {
+        return (childNodes == null || childNodes.size() == 0);
+    }
+
+    public Collection<LargeTreeNode<E>> getChildNodes() {
+        return childNodes;
+    }
+
+    public void setChildNodes(Collection<LargeTreeNode<E>> childNodes) {
+        this.childNodes = childNodes;
+    }
+}