java下struts2学生成绩分类查询，可按条件排序显示

package com.vo; public class Student { private String name; private String sex; private int math; private int english; private int sum; public String getName() { return name; } public void setName(String name) { this.name = name; } public String getSex() { return sex; } public void setSex(String sex) { this.sex = sex; } public int getMath() { return math; } public void setMath(int math) { this.math = math; } public int getEnglish() { return english; } public void setEnglish(int english) { this.english = english; } public int getSum() { return sum; } public void setSum(int sum) { this.sum = sum; } public Student() { // TODO Auto-generated constructor stub } public Student(String name, String sex, int math, int english) { super(); this.name = name; this.sex = sex; this.math = math; this.english = english; this.sum=math+english; } }