samples: updated legacy field in detect intent samples (#575)

Author: b-loved-dreamer

dialogflow/snippets/src/main/java/com/example/dialogflow/DetectIntentWithLocation.java

@@ -73,7 +73,11 @@ public static Map<String, QueryResult> detectIntentWithLocation(
         System.out.format(
             "Detected Intent: %s (confidence: %f)\n",
             queryResult.getIntent().getDisplayName(), queryResult.getIntentDetectionConfidence());
-        System.out.format("Fulfillment Text: '%s'\n", queryResult.getFulfillmentText());
+        System.out.format(
+            "Fulfillment Text: '%s'\n",
+            queryResult.getFulfillmentMessagesCount() > 0
+                ? queryResult.getFulfillmentMessages(0).getText()
+                : "Triggered Default Fallback Intent");
 
         queryResults.put(text, queryResult);
       }

dialogflow/snippets/src/main/java/com/example/dialogflow/DetectIntentWithSentimentAnalysis.java

@@ -80,7 +80,11 @@ public static Map<String, QueryResult> detectIntentSentimentAnalysis(
         System.out.format(
             "Detected Intent: %s (confidence: %f)\n",
             queryResult.getIntent().getDisplayName(), queryResult.getIntentDetectionConfidence());
-        System.out.format("Fulfillment Text: '%s'\n", queryResult.getFulfillmentText());
+        System.out.format(
+            "Fulfillment Text: '%s'\n",
+            queryResult.getFulfillmentMessagesCount() > 0
+                ? queryResult.getFulfillmentMessages(0).getText()
+                : "Triggered Default Fallback Intent");
         System.out.format(
             "Sentiment Score: '%s'\n",
             queryResult.getSentimentAnalysisResult().getQueryTextSentiment().getScore());

dialogflow/snippets/src/main/java/com/example/dialogflow/DetectIntentWithTextToSpeechResponse.java

@@ -81,7 +81,11 @@ public static Map<String, QueryResult> detectIntentWithTexttoSpeech(
         System.out.format(
             "Detected Intent: %s (confidence: %f)\n",
             queryResult.getIntent().getDisplayName(), queryResult.getIntentDetectionConfidence());
-        System.out.format("Fulfillment Text: '%s'\n", queryResult.getFulfillmentText());
+        System.out.format(
+            "Fulfillment Text: '%s'\n",
+            queryResult.getFulfillmentMessagesCount() > 0
+                ? queryResult.getFulfillmentMessages(0).getText()
+                : "Triggered Default Fallback Intent");
 
         queryResults.put(text, queryResult);
       }