Added some JavaDoc/minor cleanup.

src/WorldEdit.java

@@ -599,6 +599,20 @@ public class WorldEdit extends Plugin {
         return false;
     }
 
+    /**
+     * Fills an area recursively in the X/Z directions.
+     * 
+     * @param editSession
+     * @param x
+     * @param z
+     * @param cx
+     * @param cy
+     * @param cz
+     * @param blockType
+     * @param radius
+     * @param minY
+     * @return
+     */
     private int fill(EditSession editSession, int x, int z, int cx, int cy,
                      int cz, int blockType, int radius, int minY) {
         double dist = Math.sqrt(Math.pow(cx - x, 2) + Math.pow(cz - z, 2));
@@ -622,6 +636,17 @@ public class WorldEdit extends Plugin {
         return affected;
     }
 
+    /**
+     * Recursively fills a block and below until it hits another block.
+     * 
+     * @param editSession
+     * @param x
+     * @param cy
+     * @param z
+     * @param blockType
+     * @param minY
+     * @return
+     */
     private int fillY(EditSession editSession, int x, int cy,
                       int z, int blockType, int minY) {
         int affected = 0;

src/WorldEditSession.java

@@ -93,74 +93,152 @@ public class WorldEditSession {
         return false;
     }
 
+    /**
+     * Checks to make sure that position 1 is defined.
+     * 
+     * @throws IncompleteRegionException
+     */
     private void checkPos1() throws IncompleteRegionException {
         if (!hasSetPos1) {
             throw new IncompleteRegionException();
         }
     }
     
+    /**
+     * Checks to make sure that position 2 is defined.
+     *
+     * @throws IncompleteRegionException
+     */
     private void checkPos2() throws IncompleteRegionException {
         if (!hasSetPos2) {
             throw new IncompleteRegionException();
         }
     }
 
+    /**
+     * Gets defined position 1.
+     * 
+     * @return
+     * @throws IncompleteRegionException
+     */
     public int[] getPos1() throws IncompleteRegionException {
         checkPos1();
         return pos1;
     }
 
+    /**
+     * Sets postiion 1.
+     * 
+     * @param x
+     * @param y
+     * @param z
+     */
     public void setPos1(int x, int y, int z) {
         hasSetPos1 = true;
         pos1 = new int[]{x, y, z};
     }
 
+    /**
+     * Gets position 2.
+     * 
+     * @return
+     * @throws IncompleteRegionException
+     */
     public int[] getPos2() throws IncompleteRegionException {
         checkPos2();
         return pos2;
     }
 
+    /**
+     * Sets position 2.
+     * 
+     * @param x
+     * @param y
+     * @param z
+     */
     public void setPos2(int x, int y, int z) {
         hasSetPos2 = true;
         pos2 = new int[]{x, y, z};
     }
 
+    /**
+     * Get lower X bound.
+     * 
+     * @return
+     * @throws IncompleteRegionException
+     */
     public int getLowerX() throws IncompleteRegionException {
         checkPos1();
         checkPos2();
         return Math.min(pos1[0], pos2[0]);
     }
 
+    /**
+     * Get upper X bound.
+     *
+     * @return
+     * @throws IncompleteRegionException
+     */
     public int getUpperX() throws IncompleteRegionException {
         checkPos1();
         checkPos2();
         return Math.max(pos1[0], pos2[0]);
     }
 
+    /**
+     * Get lower Y bound.
+     *
+     * @return
+     * @throws IncompleteRegionException
+     */
     public int getLowerY() throws IncompleteRegionException {
         checkPos1();
         checkPos2();
         return Math.min(pos1[1], pos2[1]);
     }
 
+    /**
+     * Get upper Y bound.
+     *
+     * @return
+     * @throws IncompleteRegionException
+     */
     public int getUpperY() throws IncompleteRegionException {
         checkPos1();
         checkPos2();
         return Math.max(pos1[1], pos2[1]);
     }
 
+    /**
+     * Get lower Z bound.
+     *
+     * @return
+     * @throws IncompleteRegionException
+     */
     public int getLowerZ() throws IncompleteRegionException {
         checkPos1();
         checkPos2();
         return Math.min(pos1[2], pos2[2]);
     }
 
+    /**
+     * Get upper Z bound.
+     *
+     * @return
+     * @throws IncompleteRegionException
+     */
     public int getUpperZ() throws IncompleteRegionException {
         checkPos1();
         checkPos2();
         return Math.max(pos1[2], pos2[2]);
     }
 
+    /**
+     * Gets the size of the region as the number of blocks.
+     * 
+     * @return
+     * @throws IncompleteRegionException
+     */
     public int getSize() throws IncompleteRegionException {
         return (getUpperX() - getLowerX() + 1) *
                (getUpperY() - getLowerY() + 1) *
@@ -168,6 +246,8 @@ public class WorldEditSession {
     }
 
     /**
+     * Gets the clipboard.
+     * 
      * @return
      */
     public RegionClipboard getClipboard() {
@@ -175,6 +255,8 @@ public class WorldEditSession {
     }
 
     /**
+     * Sets the clipboard.
+     * 
      * @param clipboard
      */
     public void setClipboard(RegionClipboard clipboard) {

src/com/sk89q/worldedit/Point.java

@@ -28,6 +28,13 @@ import org.apache.commons.lang3.builder.HashCodeBuilder;
 public final class Point<T> {
     private final T x, y, z;
 
+    /**
+     * Construct the Point object.
+     * 
+     * @param x
+     * @param y
+     * @param z
+     */
     public Point(T x, T y, T z) {
         this.x = x;
         this.y = y;
@@ -56,6 +63,13 @@ public final class Point<T> {
         return z;
     }
 
+    /**
+     * Checks if another object is equivalent.
+     * 
+     * @param obj
+     * @return
+     */
+    @Override
     public boolean equals(Object obj) {
         if (!(obj instanceof Point)) {
             return false;
@@ -64,6 +78,12 @@ public final class Point<T> {
         return other.x == x && other.y == y && other.z == z;
     }
 
+    /**
+     * Gets the hash code.
+     * 
+     * @return
+     */
+    @Override
     public int hashCode() {
         return new HashCodeBuilder(451, 41).
             append(x).