Update javadoc

Author: germanattanasio

src/main/java/com/ibm/watson/developer_cloud/alchemy/v1/AlchemyDataNews.java

@@ -92,9 +92,9 @@ public static enum TimeFormat {
 	 * @return the news documents
 	 */
 	public DocumentsResult getNewsDocuments(Map<String, Object> parameters) {
-		Validate.notNull(parameters.get(START), "start time can't be null");
-		Validate.notNull(parameters.get(END), "end time can't be null");
-		Validate.notNull(parameters.get(RETURN), "return can't be null");
+		Validate.notNull(parameters.get(START), "start time cannot be null");
+		Validate.notNull(parameters.get(END), "end time cannot be null");
+		Validate.notNull(parameters.get(RETURN), "return cannot be null");
 
 		// Return json
 		parameters.put(OUTPUT_MODE, "json");
@@ -125,8 +125,8 @@ public DocumentsResult getNewsDocuments(Map<String, Object> parameters) {
 	 * @return {@link VolumeResult}
 	 */
 	public VolumeResult getVolume(final String start, final String end, final String timeSlice) {
-		Validate.notNull(start, "start time can't be null");
-		Validate.notNull(end, "end time can't be null");
+		Validate.notNull(start, "start time cannot be null");
+		Validate.notNull(end, "end time cannot be null");
 
 		Request request = Request.Get(NEWS_END_POINT);
 

src/main/java/com/ibm/watson/developer_cloud/natural_language_classifier/v1/util/TrainingDataUtils.java

@@ -30,6 +30,7 @@
 import org.apache.commons.csv.CSVRecord;
 
 import com.ibm.watson.developer_cloud.natural_language_classifier.v1.model.TrainingData;
+import com.ibm.watson.developer_cloud.util.Validate;
 
 
 /**
@@ -45,11 +46,10 @@ public class TrainingDataUtils {
 	 * 
 	 * @param data
 	 *            the training data data
-	 * @return the string with the CSV representation fo the training data
+	 * @return the string with the CSV representation for the training data
 	 */
 	public static String toCSV(final TrainingData... data) {
-		if (data == null || data.length == 0)
-			throw new IllegalArgumentException("data can't be null or empty");
+		Validate.notEmpty(data, "data cannot be null or empty");
 
 		StringWriter stringWriter = new StringWriter();
 		try {

src/main/java/com/ibm/watson/developer_cloud/speech_to_text/v1/SpeechToText.java

@@ -34,6 +34,7 @@
 import com.ibm.watson.developer_cloud.speech_to_text.v1.model.SpeechResults;
 import com.ibm.watson.developer_cloud.speech_to_text.v1.model.SpeechSession;
 import com.ibm.watson.developer_cloud.util.GsonSingleton;
+import com.ibm.watson.developer_cloud.util.HttpHeaders;
 import com.ibm.watson.developer_cloud.util.ResponseUtil;
 import com.ibm.watson.developer_cloud.util.Validate;
 
@@ -116,7 +117,7 @@ public SpeechSession createSession() {
 	 * @return the {@link SpeechSession}
 	 */
 	public SpeechSession createSession(final SpeechModel model) {
-		Validate.notNull(model, "model can't be null");
+		Validate.notNull(model, "model cannot be null");
 		return createSession(model.getName());
 	}
 
@@ -275,7 +276,6 @@ public SpeechResults recognize(final File audio, final String contentType) {
 	 * @return the speech results
 	 */
 	public SpeechResults recognize(Map<String, Object> params) {
-
 		File audio = (File) params.get(AUDIO);
 		if (audio == null || !audio.exists() || !audio.isFile())
 			throw new IllegalArgumentException(
@@ -293,7 +293,7 @@ public SpeechResults recognize(Map<String, Object> params) {
 		urlBuider.append("/recognize");
 
 		Request request = Request.Post(urlBuider.toString());
-		request.withHeader("Content-Type", contentType);
+		request.withHeader(HttpHeaders.CONTENT_TYPE, contentType);
 
 		String[] queryParameters = new String[] { WORD_CONFIDENCE,
 				CONTINUOUS, MAX_ALTERNATIVES, TIMESTAMPS,