读取含有中文的文件

InputStream inputStream = new FileInputStream("1.txt");
			int c=-1;
			byte[] buffer = new byte[inputStream.available()];
			while((c=inputStream.read(buffer))!=-1)
			{
				String s = new String(buffer, "gbk");
				System.out.print(s);
			}
			inputStream.close();