Map<String, Object> dataMap = new HashMap<String, Object>(); dataMap.put("key", value); Object value = dataMap.get("key"); ObjectPool<MyObject> objectPool = new GenericObjectPool<MyObject>(new MyObjectFactory()); MyObject myObject = objectPool.borrowObject(); myObject.doSomething(); objectPool.returnObject(myObject); ExecutorService executor = Executors.newFixedThreadPool(10); Statement statement = connection.createStatement(); statement.addBatch("INSERT INTO table (column1, column2) VALUES (value1, value2)"); statement.addBatch("UPDATE table SET column1 = value1"); int[] updateCounts = statement.executeBatch(); PreparedStatement preparedStatement = connection.prepareStatement("SELECT * FROM table WHERE column = ?"); preparedStatement.setString(1, "value"); ResultSet resultSet = preparedStatement.executeQuery();