jdbc基本操作

package cn.itcast.jdbc;

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

/**
 * @author newcityman
 * @date 2019/8/12 - 23:40
 */
public class JDBCDemo02 {
    public static void main(String[] args) {
        Connection conn = null;
        Statement stmt = null;
        try {
            Class.forName("com.mysql.jdbc.Driver");
            conn = DriverManager.getConnection("jdbc:mysql://localhost:3306/db1", "root", "123");
            String sql ="insert into account values(null,'newcityboy','1500.00')";
            stmt = conn.createStatement();
            int i = stmt.executeUpdate(sql);
            if(i>0){
                System.out.println("添加成功");
            }else {
                System.out.println("添加失败");
            }
        }catch (Exception e){
            e.printStackTrace();
        }finally{
            if(stmt!=null){
                try {
                    stmt.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                }
            }

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

        }


    }
}