老师i，帮忙看看有什么完善的，另外最后四行的前三行与第四行可不可以换换顺序

package el;

public class Course {
	private int id;
	private String name;
	private String category;
	public int getId() {
		return id;
	}
	public void setId(int id) {
		this.id = id;
	}
	public String getName() {
		return name;
	}
	public void setName(String name) {
		this.name = name;
	}
	public String getCategory() {
		return category;
	}
	public void setCategory(String category) {
		this.category = category;
	}
	@Override
	public String toString() {
		String describe="这是一个特别重要的学科！";
		return describe;
	}
	
}

package el;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@WebServlet("/servlet/handle")
public class ServletHandle extends HttpServlet {
	private static final long serialVersionUID = 1L;
    public ServletHandle() {
        super();
    }
	protected void doGet(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		Course course = new Course();
		course.setId(17234);
		course.setName("英语");
		course.setCategory("必修");
		request.setAttribute("course", course);
		request.getRequestDispatcher("/CourseExhibition.jsp").forward(request, response);
	}
}

<%@ page language="java" contentType="text/html; charset=utf-8"
    pageEncoding="utf-8"%>
<!DOCTYPE html>
<html>
<head>
<meta charset="utf-8">
<title>Insert title here</title>
</head>
<body>
	<p>id：${requestScope.course.id }</p>
	<p>名称：${requestScope.course.name }</p>
	<p>所属方向：${requestScope.course.category }</p>
	<p>课容量：${param.capacity }</p>
	<p>${requestScope.course }</p>
</body>
</html>

//course.setId(17234);

//course.setName("英语");

//course.setCategory("必修");

//request.setAttribute("course", course);

森林sng 2020-08-22

源自：JSTL与EL表达式 1-12 自由编程