| Blog信息 |
|
blog名称:
日志总数:1304
评论数量:2242
留言数量:5
访问次数:7591627
建立时间:2006年5月29日 |
| |
|
 [J2SE]java中对象的排序
软件技术, 电脑与网络
lhwork 发表于 2006/6/27 13:24:05 |
| 1：排序类package com.tixa.bad.customer.util;
import java.util.ArrayList;import java.util.Collections;import java.util.Comparator;
import com.tixa.bad.customer.data.AdstatGraphArea;
/** * 对地区数据进行排序 * * @StatAreaSort * * @author * * TODO */public class StatAreaSort{ /** * 点击排序规则，倒序 */ private static Comparator orderClick = new Comparator() { public int compare(Object o1, Object o2) { AdstatGraphArea b1 = (AdstatGraphArea) o1; AdstatGraphArea b2 = (AdstatGraphArea) o2; return (b2.getClickcount() - b1.getClickcount()); } };
/** * ip排序规则，倒序 */ private static Comparator orderIP = new Comparator() { public int compare(Object o1, Object o2) { AdstatGraphArea b1 = (AdstatGraphArea) o1; AdstatGraphArea b2 = (AdstatGraphArea) o2; return (b2.getIpcount() - b1.getIpcount()); } };
/** * 根据点击量进行排序 * * @param list */ public static void getSortClick(ArrayList list) { Collections.sort(list, orderClick); // Collections.reverse(list); }
/** * 根据ip量进行排序 * * @param list */ public static void getSortIp(ArrayList list) { Collections.sort(list, orderIP); // Collections.reverse(list); }
}2：对排序进行测试package com.tixa.bad.customer.util;
import java.util.ArrayList;
import junit.framework.TestCase;
import com.tixa.bad.customer.data.AdstatGraphArea;
public class StatAreaSortTest extends TestCase{
protected void setUp() throws Exception { super.setUp(); }
protected void tearDown() throws Exception { super.tearDown(); }
/* * Test method for 'com.tixa.bad.customer.util.StatAreaSort.getSortClick(ArrayList)' */ public void testGetSortClick() {
ArrayList list = new ArrayList(); AdstatGraphArea graAre = new AdstatGraphArea(); graAre.setAdid(1); graAre.setClickcount(786); graAre.setIpcount(43453); list.add(graAre); AdstatGraphArea graAre1 = new AdstatGraphArea(); graAre1.setAdid(2); graAre1.setClickcount(987876); graAre1.setIpcount(545); list.add(graAre1); AdstatGraphArea graAre2 = new AdstatGraphArea(); graAre2.setAdid(3); graAre2.setClickcount(877887); graAre2.setIpcount(4534534); list.add(graAre2); AdstatGraphArea graAre3 = new AdstatGraphArea(); graAre3.setAdid(4); graAre3.setClickcount(97998); graAre3.setIpcount(34534); list.add(graAre3); AdstatGraphArea graAre4 = new AdstatGraphArea(); graAre4.setAdid(5); graAre4.setClickcount(500); graAre4.setIpcount(2000); list.add(graAre4); System.out.print("sore before "); for(int i = 0;i<list.size();i++) { AdstatGraphArea a = (AdstatGraphArea)list.get(i); System.out.println(a.getAdid()); } StatAreaSort.getSortClick(list); System.out.print("sore after"); for(int i = 0;i<list.size();i++) { AdstatGraphArea a = (AdstatGraphArea)list.get(i); System.out.println(a.getAdid()); } System.out.println("----------------------"); StatAreaSort.getSortIp(list); for(int i = 0;i<list.size();i++) { AdstatGraphArea a = (AdstatGraphArea)list.get(i); System.out.println(a.getAdid()); } }
/* * Test method for 'com.tixa.bad.customer.util.StatAreaSort.getSortIp(ArrayList)' */ public void testGetSortIp() {
}
} |
|
|