The throws statement

The previous example of using a try-with-resources statement can be re-written with resource objects created in the same context as follows:

Connection conn;
ResultSet rs;
try {
    conn = DriverManager.getConnection("dburl", "username", "password");
    rs = conn.createStatement().executeQuery("select * from some_table");
} catch (SQLException e) {
    e.printStackTrace();
    return;
}

try (conn; rs) {
    while (rs.next()) {
        //process the retrieved data
    }
} catch (SQLException ex) {
    //Do something
    //The exception was probably caused by incorrect SQL statement
}

We have to deal with SQLException because it is a checked exception, and getConnection(), createStatement(), executeQuery(), and next() methods declare it in their throws clause. Here is an example:

Statement createStatement() throws SQLException;

It means...