java.util.date

I was just wondering if there is a need of TimeSpan in java.util so that I can define how much hours,minutes and seconds are there in between these two times. From this TimeSpan we can have a time interval between two times. like TimeSpan getTimeSpan( Date before, Date after ){...} or long timeSpan = System.currentTimeMillis(); // ... long job timeSpan = System.currentTimeMillis() - timeSpan; TimeSpan ts = new TimeSpan(timeSpan); and with this TimeSpan we can use it in SimpleDateFormat . SimpleDateFormat format = new SimpleDateFormat("HH:mm:ss"); format.format( timsSpan ); I am not sure if

This question already has an answer here: Change the format of Date Java [closed] 2 answers I'm trying implement get method for variable has type "Date". But when return, I want to return it with format "yyyy/MM/dd" and MUST be Date type. Example: original date: 2018/01/01T15:00.00.000+0000 I want return: 2018-01-01 and MUST be date, not string Can you help me in this case ? A Date is basically stored as a number of milliseconds since the epoch (1/1/1970). It can be formatted into a String in various ways (e.g. with SimpleDateFormat ), but it is never stored as a String. So, what you're asking

I want to do something like: Date date = new Date(); // current date date = date - 300; // substract 300 days from current date and I want to use this "date" How to do it? Jigar Joshi Java 8 and later With Java 8's date time API change, Use LocalDate LocalDate date = LocalDate.now().minusDays(300); Java 7 and earlier Use Calendar 's add() method Calendar cal = Calendar.getInstance(); cal.setTime(dateInstance); cal.add(Calendar.DATE, -30); Date dateBefore30Days = cal.getTime(); @JigarJoshi it's the good answer, and of course also @Tim recommendation to use . joda-time . I only want to add more

I'm using Java's java.util.Date class in Scala and want to compare a Date object and the current time. I know I can calculate the delta by using getTime(): (new java.util.Date()).getTime() - oldDate.getTime() However, this just leaves me with a long representing milliseconds. Is there any simpler, nicer way to get a time delta? notnoop The JDK Date API is horribly broken unfortunately. I recommend using Joda Time library . Joda Time has a concept of time Interval : Interval interval = new Interval(oldTime, new Instant()); EDIT: By the way, Joda has two concepts: Interval for representing an