对map对象进行排序

iteye_4422

于 2009-06-12 10:22:01 发布

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分类专栏： java

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public List<Map.Entry<Integer, String>> mapSort(Map map){
		List<Map.Entry<Integer, String>> infoIds = new ArrayList<Map.Entry<Integer, String>>(
				map.entrySet()); 
		Collections.sort(infoIds, new Comparator<Map.Entry<Integer,String >>() {
			public int compare(Map.Entry<Integer, String> o1,
			Map.Entry<Integer, String> o2) {
				return Collator.getInstance(Locale.CHINESE).compare(o1.getValue(), o2.getValue()); 
			}
		});
		return infoIds;
	}
	public List<Map.Entry<String, String>> mapStringSort(Map map){
		List<Map.Entry<String, String>> infoIds = new ArrayList<Map.Entry<String, String>>(
				map.entrySet()); 
		Collections.sort(infoIds, new Comparator<Map.Entry<String,String >>() {
			public int compare(Map.Entry<String, String> o1,
			Map.Entry<String, String> o2) {
				return Collator.getInstance(Locale.CHINESE).compare(o1.getValue(), o2.getValue()); 
			}
		});
		return infoIds;
	}

根据map中key对应的value值进行排序。