OPENNLP-829 - added some javadocs

git-svn-id: https://svn.apache.org/repos/asf/opennlp/trunk@1725190 13f79535-47bb-0310-9956-ffa450edef68
diff --git a/opennlp-tools/src/main/java/opennlp/tools/doccat/DoccatCrossValidator.java b/opennlp-tools/src/main/java/opennlp/tools/doccat/DoccatCrossValidator.java
index c4dac54..dbce077 100644
--- a/opennlp-tools/src/main/java/opennlp/tools/doccat/DoccatCrossValidator.java
+++ b/opennlp-tools/src/main/java/opennlp/tools/doccat/DoccatCrossValidator.java
@@ -24,6 +24,9 @@
 import opennlp.tools.util.eval.CrossValidationPartitioner;
 import opennlp.tools.util.eval.Mean;
 
+/**
+ * Cross validator for document categorization
+ */
 public class DoccatCrossValidator {
 
   private final String languageCode;
diff --git a/opennlp-tools/src/main/java/opennlp/tools/doccat/DocumentCategorizerContextGenerator.java b/opennlp-tools/src/main/java/opennlp/tools/doccat/DocumentCategorizerContextGenerator.java
index ab54ab4..a4c7db3 100644
--- a/opennlp-tools/src/main/java/opennlp/tools/doccat/DocumentCategorizerContextGenerator.java
+++ b/opennlp-tools/src/main/java/opennlp/tools/doccat/DocumentCategorizerContextGenerator.java
@@ -14,8 +14,6 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
-
 package opennlp.tools.doccat;
 
 import java.util.Collection;
@@ -23,7 +21,7 @@
 import java.util.Map;
 
 /**
- *
+ * Context generator for document categorizer
  */
 class DocumentCategorizerContextGenerator {
 
diff --git a/opennlp-tools/src/main/java/opennlp/tools/doccat/DocumentCategorizerEvaluator.java b/opennlp-tools/src/main/java/opennlp/tools/doccat/DocumentCategorizerEvaluator.java
index c11a0ff..ad5b493 100644
--- a/opennlp-tools/src/main/java/opennlp/tools/doccat/DocumentCategorizerEvaluator.java
+++ b/opennlp-tools/src/main/java/opennlp/tools/doccat/DocumentCategorizerEvaluator.java
@@ -14,8 +14,6 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
-
 package opennlp.tools.doccat;
 
 import opennlp.tools.tokenize.TokenSample;
@@ -39,7 +37,7 @@
   /**
    * Initializes the current instance.
    *
-   * @param categorizer
+   * @param categorizer the document categorizer instance
    */
   public DocumentCategorizerEvaluator(DocumentCategorizer categorizer,
       DoccatEvaluationMonitor ... listeners) {
diff --git a/opennlp-tools/src/main/java/opennlp/tools/doccat/DocumentCategorizerEventStream.java b/opennlp-tools/src/main/java/opennlp/tools/doccat/DocumentCategorizerEventStream.java
index b3ac1f8..89ea768 100644
--- a/opennlp-tools/src/main/java/opennlp/tools/doccat/DocumentCategorizerEventStream.java
+++ b/opennlp-tools/src/main/java/opennlp/tools/doccat/DocumentCategorizerEventStream.java
@@ -14,8 +14,6 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
-
 package opennlp.tools.doccat;
 
 import java.util.Iterator;
diff --git a/opennlp-tools/src/main/java/opennlp/tools/doccat/DocumentSample.java b/opennlp-tools/src/main/java/opennlp/tools/doccat/DocumentSample.java
index 9683ccb..c6c1852 100644
--- a/opennlp-tools/src/main/java/opennlp/tools/doccat/DocumentSample.java
+++ b/opennlp-tools/src/main/java/opennlp/tools/doccat/DocumentSample.java
@@ -14,8 +14,6 @@
  * See the License for the specific language governing permissions and
  * limitations under the License.
  */
-
-
 package opennlp.tools.doccat;
 
 import java.util.ArrayList;
diff --git a/opennlp-tools/src/main/java/opennlp/tools/doccat/NGramFeatureGenerator.java b/opennlp-tools/src/main/java/opennlp/tools/doccat/NGramFeatureGenerator.java
index 41ce19b..1c94411 100644
--- a/opennlp-tools/src/main/java/opennlp/tools/doccat/NGramFeatureGenerator.java
+++ b/opennlp-tools/src/main/java/opennlp/tools/doccat/NGramFeatureGenerator.java
@@ -22,6 +22,9 @@
 import java.util.List;
 import java.util.Map;
 
+/**
+ * n-gram {@link FeatureGenerator}
+ */
 public class NGramFeatureGenerator implements FeatureGenerator {
 
   public Collection<String> extractFeatures(String[] text, Map<String, Object> extraInfo) {