DOCSP-33345: Java comments pt. 9 (#478)

* DOCSP-33345: Java comments pt. 9

* edit

* reword

Author: norareidy

source/includes/fundamentals/code-snippets/Retrieve.java

@@ -51,15 +51,21 @@ public static void main(String [] args){
     }
 
     private void findExample(){
+        //  Creates a filter to match documents that have a "qty" value between 3 and 9
         // begin findExample
         Bson filter = Filters.and(Filters.gt("qty", 3), Filters.lt("qty", 9));
+
+        // Retrieves documents that match the filter and prints them as JSON
         collection.find(filter).forEach(doc -> System.out.println(doc.toJson()));
         // end findExample
     }
 
     private void aggregateExample(){
+        // Creates an empty filter to match all documents in the collection
         // begin aggregateExample
         Bson filter = Filters.empty();
+
+        // Prints the collection's "color" values and each value's frequency in descending frequency order
         collection.aggregate(Arrays.asList(
             Aggregates.match(filter), 
             Aggregates.group("$color", Accumulators.sum("qty", "$qty")),
@@ -69,13 +75,16 @@ private void aggregateExample(){
     }
 
     private void watchExample(){
+        // Creates instructions to match insert and update operations
         // begin watchExample
         List<Bson> pipeline = Arrays.asList(
             Aggregates.match(Filters.in("operationType", Arrays.asList("insert", "update"))));
 
+        // Creates a change stream that receives change events for the specified operations
         ChangeStreamIterable<Document> changeStream = database.watch(pipeline)
             .fullDocument(FullDocument.UPDATE_LOOKUP);
 
+        // Prints a message each time the change stream receives a change event
         changeStream.forEach(event -> 
             System.out.println("Received a change to the collection: " + event));
         // end watchExample

source/includes/fundamentals/code-snippets/SearchText.java

@@ -47,27 +47,31 @@ public static void main(String [] args){
     }
 
     private void termExample(){
+        // Retrieves and prints documents containing the "fast" string in any fields associated with a text index
         // begin termExample
         Bson filter = Filters.text("fast");
         collection.find(filter).forEach(doc -> System.out.println(doc.toJson()));
         // end termExample
     }
 
     private void multipleTermExample(){
+        // Retrieves and prints documents containing the "fate 7" string in any fields associated with a text index
         // begin multipleTermExample
         Bson filter = Filters.text("fate 7");
         collection.find(filter).forEach(doc -> System.out.println(doc.toJson()));
         // end multipleTermExample
     }
 
     private void negateExample(){
+        // Retrieves and prints documents containing the "furious" but not the "fast" string in any fields associated with a text index
         // begin negateExample
         Bson filter = Filters.text("furious -fast");
         collection.find(filter).forEach(doc -> System.out.println(doc.toJson()));
         // end negateExample
     }
 
     private void phraseExample(){
+        // Retrieves and prints documents containing the "fate of the furious" string in any fields associated with a text index
         // begin phraseExample
         Bson filter = Filters.text("\"fate of the furious\"");
         collection.find(filter).forEach(doc -> System.out.println(doc.toJson()));

source/includes/fundamentals/code-snippets/Skip.java

@@ -39,11 +39,12 @@ public static void main (String [] args){
     }
 
     private void skipExample(){
+        // Prints all remaining documents as JSON after applying a descending sort and omitting the first 5 documents
         // begin skipExample
         import com.mongodb.client.model.Filters;
         import com.mongodb.client.model.Sorts;
 
-        // <MongoCollection setup code here>
+        // Add your MongoCollection setup code here
 
         Bson filter = Filters.empty();
         collection.find(filter)             
@@ -54,6 +55,7 @@ private void skipExample(){
     }
 
     private void noResultsExample(){
+        // Prints all remaining documents as JSON after applying a descending sort and omitting the first 9 documents
         // begin noResultsExample
         Bson filter = Filters.empty();
         collection.find(filter)             
@@ -64,12 +66,13 @@ private void noResultsExample(){
     }
 
     private void skipAggregateExample(){
+        // Prints all remaining documents after using an aggregation pipeline to apply a sort and omit the first 5 documents
         // begin skipAggregateExample
         import com.mongodb.client.model.Filters;
         import com.mongodb.client.model.Sorts;
         import com.mongodb.client.model.Aggregates;
 
-        // <MongoCollection setup code here>
+        // Add your MongoCollection setup code here
 
         Bson filter = Filters.empty();
         collection.aggregate(Arrays.asList(