how to close database connections/file connections with out using close() method in java

 

1. Try-With-Resources Statement

The try-with-resources statement, introduced in Java 7, is the preferred method to ensure that resources are closed automatically. Classes that implement the AutoCloseable interface (which includes Connection, Statement, ResultSet, FileInputStream, etc.) can be used with this statement.

try (Connection connection = DriverManager.getConnection(url, user, password);

     Statement statement = connection.createStatement();

     ResultSet resultSet = statement.executeQuery(query)) {

   

    // Use the connection, statement, and resultSet

 

} catch (SQLException e) {

    e.printStackTrace();

}

 

In this example, the Connection, Statement, and ResultSet are automatically closed at the end of the try block.