列出java字符编码集

SortedMap<String,Charset> all = null;
		all = Charset.availableCharsets();
		Iterator<Map.Entry<String,Charset>> iter = null;
		iter = all.entrySet().iterator();
		while(iter.hasNext()){
			Map.Entry<String,Charset> me = iter.next();
			System.out.println(me.getKey());
		}