java面向对象

package com.ll;

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


public class jdbcdemo {
    public static void main(String[] args) throws Exception {
        String url ="jdbc:mysql://127.0.0.1:3306/sys?useSSL=false";
        String username="root";
        String password="123456";
        Connection conn = DriverManager.getConnection(url,username,password);

        String sql="UPDATE emp SET sal=500 WHERe empNo=7366";

        Statement st = conn.createStatement();

        int count =st.executeUpdate(sql);
        System.out.println(count);
        st.close();
        conn.close();

    }
}