package bean;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.SQLException;
public class Conndb {
private Connection conn = null;
private String driver = "com.mysql.jdbc.Driver";
private String url = "jdbc:mysql://localhost/supermarketSys";
String user ="root";
String password = "root";
public Conndb() {
try {
Class.forName(driver);
conn = DriverManager.getConnection(url, user, password);
} catch (ClassNotFoundException e) {
e.printStackTrace();
} catch (SQLException e) {
e.printStackTrace();
}
}
public Connection getconnection(){
return this.conn;
}
public void closed(){
try {
this.conn.close();
} catch (SQLException e) {
e.printStackTrace();
}
}
}
把这个代码改成sql语言的 谢谢
真心不会改