Create and Manage the Statement and PreparedStatement Objects – Querying Data from Databases
2021-10-22
6.3.3.3 Create and Manage the Statement and PreparedStatement Objects The Statement class contains three important query methods with different functions: execute-Query(), executeUpdate() and execute(). For each method, different operations can be performed and different results can be returned. Generally, the execute methods can be divided into two categories: 1) execute methods that need to perform a data query, such as executeQuery(), which returns an instance of ResultSet that contains the queried results, and 2) execute methods that do not perform a data query and only return an integer, such as executeUpdate(). An inter-esting method is execute(), which can be used either way. method and theRead More →