style: fix checkstyle errors

src/main/java/algorithms/orthogonalRangeSearching/RangeTreeNode.java

@@ -1,86 +1,96 @@
 package algorithms.orthogonalRangeSearching;
 
+/**
+ * This class is the node class for building a range tree.
+ * @param <T> Generic type of the node class
+ */
 public class RangeTreeNode<T> {
-  T val;
-  int height;
-  RangeTreeNode<T> left = null;
-  RangeTreeNode<T> right = null;
-  RangeTreeNode<T> parent = null;
-  RangeTreeNode<T> yTree = null;
-
-  public RangeTreeNode(T val) {
-    this.val = val;
-  }
-
-  public RangeTreeNode(T val, RangeTreeNode<T> left, RangeTreeNode<T> right) {
-    this.val = val;
-    this.left = left;
-    this.right = right;
-  }
-
-  public T getVal() {
-    return this.val;
-  }
-
-  public int getHeight() {
-    return this.height;
-  }
-
-  public RangeTreeNode<T> getLeft() {
-    return this.left;
-  }
-
-  public RangeTreeNode<T> getRight() {
-    return this.right;
-  }
-
-  public RangeTreeNode<T> getParent() {
-    return this.parent;
-  }
-
-  public RangeTreeNode<T> getYTree() {
-    return this.yTree;
-  }
-
-  public void setVal(T val) {
-    this.val = val;
-  }
-
-  public void setLeft(RangeTreeNode<T> left) {
-    this.left = left;
-  }
-
-  public void setRight(RangeTreeNode<T> right) {
-    this.right = right;
-  }
-
-  public void setParent(RangeTreeNode<T> parent) {
-    this.parent = parent;
-  }
-
-  public void setHeight(int height) {
-    this.height = height;
-  }
-
-  public void setYTree(RangeTreeNode<T> yTree) {
-    this.yTree = yTree;
-  }
-
-  @Override
-  public boolean equals(Object other) {
-    if (other == this) {
-      return true;
-    }
-    if (!(other instanceof RangeTreeNode)) {
-      return false;
-    }
-    RangeTreeNode<T> node = (RangeTreeNode<T>) other;
-    return this.val == node.val;
-  }
-
-  @Override
-  public String toString() {
-    return String.valueOf(this.val);
-  }
+    private T val;
+    private int height;
+    private RangeTreeNode<T> left = null;
+    private RangeTreeNode<T> right = null;
+    private RangeTreeNode<T> parent = null;
+    private RangeTreeNode<T> yTree = null;
+
+    public RangeTreeNode(T val) {
+        this.val = val;
+    }
+
+    /**
+     * Constructor for range tree node
+     * @param val value of node
+     * @param left left child of node
+     * @param right right child of node
+     */
+    public RangeTreeNode(T val, RangeTreeNode<T> left, RangeTreeNode<T> right) {
+        this.val = val;
+        this.left = left;
+        this.right = right;
+    }
+
+    public T getVal() {
+        return this.val;
+    }
+
+    public int getHeight() {
+        return this.height;
+    }
+
+    public RangeTreeNode<T> getLeft() {
+        return this.left;
+    }
+
+    public RangeTreeNode<T> getRight() {
+        return this.right;
+    }
+
+    public RangeTreeNode<T> getParent() {
+        return this.parent;
+    }
+
+    public RangeTreeNode<T> getYTree() {
+        return this.yTree;
+    }
+
+    public void setVal(T val) {
+        this.val = val;
+    }
+
+    public void setLeft(RangeTreeNode<T> left) {
+        this.left = left;
+    }
+
+    public void setRight(RangeTreeNode<T> right) {
+        this.right = right;
+    }
+
+    public void setParent(RangeTreeNode<T> parent) {
+        this.parent = parent;
+    }
+
+    public void setHeight(int height) {
+        this.height = height;
+    }
+
+    public void setYTree(RangeTreeNode<T> yTree) {
+        this.yTree = yTree;
+    }
+
+    @Override
+    public boolean equals(Object other) {
+        if (other == this) {
+            return true;
+        }
+        if (!(other instanceof RangeTreeNode)) {
+            return false;
+        }
+        RangeTreeNode<T> node = (RangeTreeNode<T>) other;
+        return this.val == node.val;
+    }
+
+    @Override
+    public String toString() {
+        return String.valueOf(this.val);
+    }
 
 }