java lisi乱序、排序，javalisi排序,package com.

java lisi乱序、排序，javalisi排序,package com.

package com.gcj.test;import java.text.ParseException;import java.util.ArrayList;import java.util.Arrays;import java.util.Collections;import java.util.Comparator;import java.util.List;/** *  * 排序Test * @author youps-a * @version $Id: Test.java, v 0.1 2015年5月22日 下午8:04:45 youps-a Exp $ */public class Test {    @SuppressWarnings({ "unchecked", "rawtypes" })    public static void main(String[] args) throws ParseException {        /**排序方法简单使用*/        List list = Arrays.asList(1,2,3,4,5,6,7,8,9);   //定义个list        System.out.println("原  顺  序"+list.toString());        Collections.shuffle(list);          System.out.println("打乱顺序"+list.toString());        Collections.sort(list);        System.out.println("正序排列"+list.toString());        Collections.sort(list, Collections.reverseOrder());        System.out.println("逆序排列"+list.toString());        /**排序方法复杂使用*/        List<TestBean> testList = new ArrayList<TestBean>();        for (int i = 0; i < 10; i++) {            TestBean testBean = new TestBean();            testBean.setId(i);            testBean.setName("name"+i);            testList.add(testBean);        }        //定义一个TestBean 类型的list 并打乱进行测试        Collections.shuffle(testList);          for (int i = 0; i < testList.size(); i++) {            System.out.println("testList乱序  "+testList.get(i).toString());        }        System.out.println();        //根据TestBean 的 id 属性进行排序，需重载实现        Collections.sort(testList, new Comparator<TestBean>() {            @Override            public int compare(TestBean o1, TestBean o2) {                // 实现正序排列                return o1.getId().compareTo(o2.getId());            }        });        for (int i = 0; i < testList.size(); i++) {            System.out.println("testList正序  "+testList.get(i).toString());        }        System.out.println();        //再次打乱顺序        Collections.shuffle(testList);          //依旧重载方法        Collections.sort(testList, new Comparator<TestBean>() {            @Override            public int compare(TestBean o1, TestBean o2) {                // 实现倒序排列                return o2.getId().compareTo(o1.getId());            }        });        for (int i = 0; i < testList.size(); i++) {            System.out.println("testList倒序  "+testList.get(i).toString());        }    }}//测试beanclass TestBean {    //注意需使用 Integer 或Long 等包装类型    private Integer id;    private String name;    public Integer getId() {        return id;    }    public void setId(Integer id) {        this.id = id;    }    public String getName() {        return name;    }    public void setName(String name) {        this.name = name;    }    @Override    public String toString() {        // TODO Auto-generated method stub        return "id:"+this.getId()+",name:"+this.getName();    }}