源码：

		Date currentTime = new Date();System.out.println("currentTime:"+currentTime);SimpleDateFormat formatter = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");String dateString = formatter.format(currentTime);System.out.println("dateString:"+dateString);ParsePosition pos = new ParsePosition(0); // 从第一个字符开始解析Date currentTime_2 = formatter.parse(dateString, pos);System.out.println("currentTime_2:"+currentTime_2);Date date = new Date();//new日期对象SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");//格式化当前时间String d = dateFormat.format(date);//获取当前时间System.out.println("date:"+d);

结果：

currentTime:Thu Nov 23 13:08:38 CST 2023
dateString:2023-11-23 13:08:38
currentTime_2:Thu Nov 23 13:08:38 CST 2023
date:2023-11-23 13:08:38