java中List对象通用排序算法，javalist排序算法,/** * 学生实体类

java中List对象通用排序算法，javalist排序算法,/** * 学生实体类

/** * 学生实体类 * @author chenchuang * */public class Student {    public Student(int id, String name, int age) {        super();        this.id = id;        this.name = name;        this.age = age;    }    private int id;    private String name;    private int age;    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 int getAge() {        return age;    }    public void setAge(int age) {        this.age = age;    }}

                                工具类：

import java.lang.reflect.InvocationTargetException;import java.lang.reflect.Method;import java.util.Collections;import java.util.Comparator;import java.util.List;/** * List对象排序的通用方法 *  * @author chenchuang *  * @param <E> */public class ListSort<E> {    /**     *      * @param list 要排序的集合     * @param method 要排序的实体的属性所对应的get方法     * @param sort desc 为正序       */    public void Sort(List<E> list, final String method, final String sort) {        // 用内部类实现排序        Collections.sort(list, new Comparator<E>() {            public int compare(E a, E b) {                int ret = 0;                try {                    // 获取m1的方法名                    Method m1 = a.getClass().getMethod(method, null);                    // 获取m2的方法名                    Method m2 = b.getClass().getMethod(method, null);                    if (sort != null && "desc".equals(sort)) {                        ret = m2.invoke(((E)b), null).toString().compareTo(m1.invoke(((E)a),null).toString());                    } else {                        // 正序排序                        ret = m1.invoke(((E)a), null).toString().compareTo(m2.invoke(((E)b), null).toString());                    }                } catch (NoSuchMethodException ne) {                    System.out.println(ne);                } catch (IllegalArgumentException e) {                    // TODO Auto-generated catch block                    e.printStackTrace();                } catch (IllegalAccessException e) {                    // TODO Auto-generated catch block                    e.printStackTrace();                } catch (InvocationTargetException e) {                    // TODO Auto-generated catch block                    e.printStackTrace();                }                return ret;            }        });    }}

                                测试类：

import java.util.ArrayList;public class ListTest {    /**     * @param args     */    public static void main(String[] args) {        ArrayList<Student> list= new ArrayList<Student>();        list.add(new Student(1,"张三",5));        list.add(new Student(2,"李四",4));        list.add(new Student(3,"王五",3));        list.add(new Student(4,"小明",2));        list.add(new Student(5,"小黑",1));        ListSort<Student> listSort= new ListSort<Student>();        listSort.Sort(list, "getAge", "desc");        for(Student s:list){            System.out.println(s.getId()+s.getName()+s.getAge());        }    }}

                                测试结果

1张三52李四43王五34小明25小黑1