Use try-with-resources

public void doQueries() throws MyException{
    // First try-with-resources.
    try ( Connection con = DriverManager.getConnection( dataSource ) ;
          PreparedStatement s1 = con.prepareStatement( updateSqlQuery ) ;
          PreparedStatement s2 = con.prepareStatement( selectSqlQuery ) ;
    ) {
 
        … Set parameters of PreparedStatements, etc.
 
        s1.executeUpdate() ;
 
        // Second try-with-resources, nested within first.
        try (
            ResultSet rs = s2.executeQuery() ;
        ) {
            … process ResultSet
        } catch ( SQLException e2 ) {
            … handle exception related to ResultSet.
        }
 
    } catch ( SQLException e ) {
        … handle exception related to Connection or PreparedStatements.
    }
}