Servlet_requestResponse
package Servlet; import java.io.IOException; import java.io.PrintWriter; import javax.servlet.ServletException; import javax.servlet.annotation.WebServlet; import javax.servlet.http.HttpServlet; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; // URL Mapping : Servlet을 대체하는 문자열 @WebServlet("/Ex01_requestResponse") // -> Servlet은 HttpServlet 클래스를 상속 받는다..