[root@nccddev130026 ~]# cat ~/Split.java 
import com.google.gson.JsonArray;
import com.google.gson.JsonObject;

public class Split {
    public static JsonArray main(JsonObject args) {
        String separator = "\n";
        if (args.has("separator")) {
            separator = args.getAsJsonPrimitive("separator").getAsString();
        }
        String payLoad = "aaaa\nbbbb\ncccc";
        if (args.has("payload")) {
            payLoad = args.getAsJsonPrimitive("payload").getAsString();
        }
        JsonArray jsonArray = new JsonArray();
        String[] stringArray = payLoad.split(separator);
        for(String element: stringArray) {
            jsonArray.add(element);
        }
        return jsonArray;
    }
}

[root@nccddev130026 ~]# cat ~/Sort.java 
import com.google.gson.JsonArray;

public class Sort {
    public static JsonArray main(JsonArray args) {
        JsonArray newJsonArray = new JsonArray();
        for(int i=args.size()-1;i>=0;i--) {
            newJsonArray.add(args.get(i).getAsString());
        }
        return newJsonArray;
    }
}