使用Statement对象执行静态sql语句

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

import org.junit.Test;

/**
 * 使用Statement对象执行静态sql语句
 *
 */
public class Demo1 {

    private String url = "jdbc:mysql://localhost:3306/day17";
    private String user = "root";
    private String password = "root";
    /**
     * 执行DDL语句(创建表)
     */
    @Test
    public void test1(){
        Statement stmt = null;
        Connection conn = null;
        try {
            //1.驱动注册程序
            Class.forName("com.mysql.jdbc.Driver");

            //2.获取连接对象
            conn = DriverManager.getConnection(url, user, password);

            //3.创建Statement
            stmt = conn.createStatement();

            //4.准备sql
            String sql = "CREATE TABLE student(id INT PRIMARY KEY AUTO_INCREMENT,NAME VARCHAR(20),gender VARCHAR(2))";

            //5.发送sql语句，执行sql语句,得到返回结果
            int count = stmt.executeUpdate(sql);

            //6.输出
            System.out.println("影响了"+count+"行！");
        } catch (Exception e) {
            e.printStackTrace();
            throw new RuntimeException(e);
        } finally{
            //7.关闭连接(顺序:后打开的先关闭)
            if(stmt!=null)
                try {
                    stmt.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                    throw new RuntimeException(e);
                }
            if(conn!=null)
                try {
                    conn.close();
                } catch (SQLException e) {
                    e.printStackTrace();
                    throw new RuntimeException(e);
                }
        }
    }

}