【工具类】Date、Long、String 类型互转

public static void main(String[] args) throws ParseException {
		
		DateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		
		Date date1 = new Date(Long.parseLong("1437027902781"));//Long 转 Date
		
		Date date2 = dateFormat.parse("2015-07-16 14:46:23");//String 转  Date
		
		long long1 = Long.parseLong("1437027902781");//String 转 Long
		
		long long2 = new Date().getTime();//Date 转 Long
		
		String str1 = dateFormat.format(new Date());//Date 转 String
		
		String str2 = Long.toString(Long.parseLong("1437027902781"));//Long 转  String
		
	}