Simply using JDBC

Package com.fgy.jdbc; 

Import the java.sql *. ; 

public  class Demo1Jdbc {
     public  static  void main (String [] args) throws a ClassNotFoundException, SQLException {
         // 1. Import Driver jar package 

        // 2. Registration Driver 
        Class.forName ( "com.mysql.jdbc.Driver" ); 

        // 3. Get connected 
        connection the DriverManager.getConnection = CON ( "JDBC: MySQL: // localhost: 3306 / DB1", "the root", "the root" ); 

        // 4. define the SQL statement 
        String = SQL "SELECT * from STU" ; 

        // 5. The statement object acquired
         @Statement = con.createStatement the Statement (); 
        the PreparedStatement Statement = con.prepareStatement (SQL); // recommended prepareStatement, SQL injection can be prevented 

        @ 6. execute SQL statements
         // the ResultSet Statement.executeQuery RS = (SQL); 
        the ResultSet RS = Statement.executeQuery (); 

        // 7. The processing result 
        the while (rs.next ()) { 
            System.out.println (rs.getString ( "name" )); 
        } 

        // 8. The release resources 
        Statement.close () ; 
        con.close (); 
    } 
}

Package com.fgy.jdbc; 

Import the java.sql *. ; 

public  class Demo2Jdbc {
     public  static  void main (String [] args) { 
        Connection Conn = null ; 
        the PreparedStatement Statement = null ;
         the try {
             // 1. Import Driver jar package 

            / / 2. Register drive 
            the Class.forName ( "com.mysql.jdbc.Driver" ); 

            // 3. Get connected 
            conn = DriverManager.getConnection ( "jdbc: mysql : // localhost: 3306 / db1", "root", "root" ); 

            // 4. custom SQL statement
            String sql = "insert into stu ( name) values ( ' Xiaoxiao')" ; 

            // 5. Obtain statement object 
            statement = conn.prepareStatement (SQL); 

            // 6. The execute SQL statements
             // Statement.execute (); 
            int I = Statement.executeUpdate (); 
            System.out.println ( "number of rows affected:" + I); 

            // 7. the processing result
             // ... 
        } the catch (a ClassNotFoundException E) { 
            e.printStackTrace () ; 
        } the catch (SQLException E) { 
            e.printStackTrace (); 
        } the finally {
            // 8.释放资源
            if (statement != null) {
                try {
                    statement.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }

            if (conn != null) {
                try {
                    conn.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }
        }
    }
}