You are an expert in writing code in many different languages. Your goal is to perform code completion for the following code, keeping in mind the rest of the code and the file meta data.
    Metadata details:
    filename: DBaddJavaOps.m
    path of file: ./repos/d4m/matlab_src
    
    the code of the file until where you have to start completion: function ops = DBaddJavaOps(javaClass,instanceName,host,user,pass,varargin)
%DBaddJavaOps: Adds a java database operation.
%Database internal function for DBcreate, DBdelete, DBinsert, DBsubsrefFind
%  Usage:
%    ops = DBaddJavaOps(javaClass,instanceName,host,user,pass,varargin)
%  Inputs:
%    javaClass = java class that operates on database
%    instanceName = database instance name
%    host = database host name
%    user = username on database
%    pass = password on database

    
function ops = DBaddJavaOps(javaClass,instanceName,host,user,pass,varargin)
%DBaddJavaOps: Adds a java database operation.
%Database internal function for DBcreate, DBdelete, DBinsert, DBsubsrefFind
%  Usage:
%    ops = DBaddJavaOps(javaClass,instanceName,host,user,pass,varargin)
%  Inputs:
%    javaClass = java class that operates on database
%    instanceName = database instance name
%    host = database host name
%    user = username on database
%    pass = password on database
%    varargin = function arguments required by ops
% Outputs:
%    ops = java function that is ready to be called on database

if exist('OCTAVE_VERSION','builtin')
    ops=javaObject(javaClass,instanceName,host,user,pass,varargin{:});
 else
   import java.util.*;
   [~, jPath, jFunc] = fileparts(javaClass);
%   import ll.mit.edu.d4m.db.cloud.*;
   import([jPath '.*']);
%   ops = D4mDbTableOperations(host);
   ops = feval(jFunc(2:end