coding style and JavaDoc.

Author: ShahzaibIbrahim

bundles/org.eclipse.swt/Eclipse SWT/win32/org/eclipse/swt/graphics/Cursor.java

@@ -59,26 +59,29 @@ public final class Cursor extends Resource {
 	 * platforms and should never be accessed from application code.
 	 * </p>
 	 *
-	 * @noreference This field is not intended to be referenced by clients.
 	 */
-	public long handle;
+	private long handle;
 	/**
 	 * Attribute to cache current native zoom level
 	 */
-	private static int DEFAULT_ZOOM = 100;
+	private static final int DEFAULT_ZOOM = 100;
 
 	private HashMap<Integer, Long> zoomLevelToHandle = new HashMap<>();
 
 	boolean isIcon;
-	private ImageData source;
-	private ImageData mask;
-	private int hotspotX;
-	private int hotspotY;
+	private final ImageData source;
+	private final ImageData mask;
+	private final int hotspotX;
+	private final int hotspotY;
 /**
  * Prevents uninitialized instances from being created outside the package.
  */
 Cursor(Device device) {
 	super(device);
+	this.source = null;
+	this.mask = null;
+	this.hotspotX = -1;
+	this.hotspotY = -1;
 }
 
 /**
@@ -128,7 +131,7 @@ public final class Cursor extends Resource {
  * @see #dispose()
  */
 public Cursor(Device device, int style) {
-	super(device);
+	this(device);
 	long lpCursorName = 0;
 	switch (style) {
 		case SWT.CURSOR_HAND: 		lpCursorName = OS.IDC_HAND; break;
@@ -263,6 +266,7 @@ public Cursor(Device device, ImageData source, ImageData mask, int hotspotX, int
 public Cursor(Device device, ImageData source, int hotspotX, int hotspotY) {
 	super(device);
 	this.source = source;
+	this.mask = null;
 	this.hotspotX = hotspotX;
 	this.hotspotY = hotspotY;
 	if (source == null) SWT.error(SWT.ERROR_NULL_ARGUMENT);
@@ -345,12 +349,12 @@ public Cursor(Device device, ImageData source, int hotspotX, int hotspotY) {
  * available on all platforms, and should never be called from
  * application code.
  *
- * Updates zoom and refresh the Cursor based on the native zoom level, if required.
+ * Get the handle for a cursor given a zoom level.
  *
- * @param cursor the cursor to get the handle of
- * @param zoom device zoom in % of the monitor on which the image is painted
+ * @param cursor the cursor
+ * @param zoom zoom level (in %) of the monitor the cursor is currently in.
  *
- * @return true if cursor is refreshed
+ * @return The handle of the cursor.
  *
  * @noreference This method is not intended to be referenced by clients.
  */