//对频道进行排序 class ComparatorChannel implements Comparator{ public int compare(Object arg0, Object arg1) { NewsChannel channel0=(NewsChannel)arg0; NewsChannel channel1=(NewsChannel)arg1; int flag=channel0.sortIndex.compareTo(channel1.sortIndex); if(flag==0){ return channel0.srpId.compareTo(channel1.srpId); }else{ return flag; } } }
import java.util.ArrayList; import java.util.Collections; import java.util.Comparator; import java.util.HashMap; import java.util.List; import java.util.Map; public class $ { public static void main(String[] args) { List<Map<String, String>> list = new ArrayList<Map<String, String>>(); list.add(getData(0)); list.add(getData(3)); list.add(getData(05)); list.add(getData(6)); list.add(getData(2)); System.out.println("排序前" + list); Collections.sort(list, new Comparator<Map<String, String>>() { public int compare(Map<String, String> o1, Map<String, String> o2) { return o1.get("countScore").compareTo(o2.get("countScore")); } }); System.out.println("排序后" + list); } private static Map<String, String> getData(int num) { Map<String, String> map = new HashMap<String, String>(); map.put("countScore", String.valueOf(num)); return map; } }