Java_JDBC mysql database connection

JDBC MySQL data link eight steps:

Package com.company; 

Import the java.sql.Connection;
 Import the java.sql.Driver;
 Import the java.sql.DriverManager;
 Import the java.sql.Statement; 

public  class the Main { 

    public  static  void main (String [] args) throws Exception {
     // the Write your code here Wallpaper
         // 1. import the driver package jar package jar package download link: https://dev.mysql.com/downloads/connector/j/5.1.html download the zip file, extract the files copied to the lib, then right-click libs aS Library is set to the Add
         // 2. registration driver 
        Class.forName ( "com.mysql.cj.jdbc.Driver" );
         //3. Get the database connection object database db2 is your name behind your mysql root user name is your mysql password 
        Connection conn = DriverManager.getConnection ( "jdbc: mysql: // localhost:? 3306 / db2 serverTimezone = GMT% 2B8" , "the root", "123" );
         // 4. defined sql statement 
        String sql = "Update DB1 SET = 101 class = WHERE SnO. 1" ;
         // 5. the object acquired execute sql the statement 
        the statement stmt = conn.createStatement ( );
         // 6. execute SQL 
        int COUNT = stmt.executeUpdate (SQL);
         // 7. The processing result 
        System.out.println (COUNT);
         // 8. The release resources 
        stmt.close (); 
        conn.Close () ; 

    } 
}