JDBC connection

package com.lin.jdbc_01;

import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.Statement;

/*
 * JDBC Basic introduction to use 
 * 1） The load driver 
 * 2） Get database connection object 
 * 3） Get ready sql sentence 
 * 4) Get execution object 
 * 5） Perform object sql sentence 
 * 6) Return results 
 * 7） Release  
 * */
public class JDBCDemo {
	public static void main(String[] args) throws Exception {
//		1) Load database driver ：com.mysql.jdbc： The underlying implementation of the driver class is sun company Driver Interface 
		Class.forName("com.mysql.jdbc.Driver");
//		2) Get database connection object 
	/*
		public static Connection getConnection
		(String url,String user,String password)throws SQLException
		 Parameters 1：url: Connected to the database url Address （ Uniform resource locator ）"jdbc:mysql://localhost:3306/ Database name "
		 Parameters 2： User name to connect to the database root
		 Parameters 3： Password to connect to the database 
	*/
		Connection conn=DriverManager.getConnection("jdbc:mysql://localhost:3306/mydb_02", "root", "123456");
//		3) Get ready sql sentence 
		String sql="update emp set salary=salary+500 where id=6;";
//	 4) Get the execution object through the database connection object 
//		Statement createStatement()throws SQLException   Get the execution object and put sql Send to database 
//		Statement: Operation static SQL sentence 
		Statement stmt=conn.createStatement();
//		5） Execute through the execution object sql sentence 
//		int executeUpdate(String sql)
		int count=stmt.executeUpdate(sql);
		System.out.println(" The update is successful ："+count);
//		6) Release resources 
		stmt.close();// Close the execution object 
		conn.close();// Close connection object 
	}
}