问如何关闭断开的jdbc连接？

EN

String user = "user";
String password = "password";
String url = "jdbc:mysql://localhost:3306/database_name";
try (Connection connect = DriverManager.getConnection(url, user, password);
Statement stmt = connect.createStatement();
ResultSet rs = stmt.executeQuery("SELECT * FROM table;");
) {
    while (rs.next()) {
        // TODO
    }
} catch (Exception e) {
    System.out.println(e);
}

import java.sql.*;  
class MysqlConnectionExample{  
    public static void main(String args[]){  
        String jdbcUrl = "jdbc:mysql://localhost:3306/dbName";
        String userName = "userName";
        String password = "password";
        String driverName = "com.mysql.jdbc.Driver";
        Connection con= null;
        Statement stmt = null;
        try{  
            // Create connection
            Class.forName(driverName);  
            con = DriverManager.getConnection(jdbcUrl, userName, password);  
            stmt = con.createStatement();  
            ResultSet rs = stmt.executeQuery("SELECT * FROM employee");  

            // Iterate over the results
            while(rs.next()) { 
                System.out.println(rs.getInt(1)+"  "+rs.getString(2)+"  "+rs.getString(3));  
            }
        }
        catch(Exception e){ 
            System.out.println(e);
        }  
        finally{
            // Close connection
            con.close();
        }
    }  
}