Tidy up some javadocs

src/main/java/org/springframework/retry/RetryCallback.java

@@ -19,7 +19,10 @@ package org.springframework.retry;
 /**
  * Callback interface for an operation that can be retried using a
  * {@link RetryOperations}.
- * 
+ *
+ * @param T the type of object returned by the callback
+ * @param E the type of exception it declares may be thrown
+ *
  * @author Rob Harrop
  * @author Dave Syer
  */
@@ -31,7 +34,7 @@ public interface RetryCallback<T, E extends Throwable> {
 	 * semantics when an operation is retried.
 	 * @param context the current retry context.
 	 * @return the result of the successful operation.
-	 * @throws Exception if processing fails
+	 * @throws Throwable of type E if processing fails
 	 */
 	T  doWithRetry(RetryContext context) throws E;
 }

src/main/java/org/springframework/retry/RetryPolicy.java

@@ -23,9 +23,9 @@ package org.springframework.retry;
  * framework, e.g. to support nested retries. Context can also be external, and
  * the {@link RetryPolicy} provides a uniform API for a range of different
  * platforms for the external context.
- * 
+ *
  * @author Dave Syer
- * 
+ *
  */
 public interface RetryPolicy {
 
@@ -40,23 +40,23 @@ public interface RetryPolicy {
 	 * in so that marker interfaces can be used and a manager can collaborate
 	 * with the callback to set up some state in the status token.
 	 * @param parent the parent context if we are in a nested retry.
-	 * 
-	 * @return a {@link RetryContext} object specific to this manager.
-	 * 
+	 *
+	 * @return a {@link RetryContext} object specific to this policy.
+	 *
 	 */
 	RetryContext open(RetryContext parent);
 
 	/**
 	 * @param context a retry status created by the
-	 * {@link #open(RetryContext)} method of this manager.
+	 * {@link #open(RetryContext)} method of this policy.
 	 */
 	void close(RetryContext context);
 
 	/**
 	 * Called once per retry attempt, after the callback fails.
-	 * 
+	 *
 	 * @param context the current status object.
-	 * 
+	 *
 	 */
 	void registerThrowable(RetryContext context, Throwable throwable);