Java text simpledateformat10/30/2023 ![]() Using a Calendar makes it easier to customize and play around with custom dates. String formatted = formatter.format(date) ![]() Formatting įormatting a Date is essentially the same, though, we supply a Date instance ourselves: SimpleDateFormat formatter = new SimpleDateFormat( "EEE, MMM dd. Internally, the long value is converted into a Date. Running this piece of code yields: Tue, Aug 11. String formatted = formatter.format(System.currentTimeMillis()) Formatting System.currentTimeMillis()įormatting the number of milliseconds passed since the UNIX epoch, namely January 1, 1970, 00:00:00 GMT, is fairly simple: SimpleDateFormat formatter = new SimpleDateFormat( "EEE, MMM dd. Note: In this pattern, we wanted some words to be interpreted literally - so we escaped them with single quotes.įor brevity's sake, we've put the Formatting Rules at the end of the article if you're not familiar with them. If we change our mind about the pattern later, we can always apply another one to an object that we have previously created, and the old one will be overridden: formatter.applyPattern( "'date': yyyy.MM.dd - 'time': H:mm:ss") It is worth mentioning that if we call the constructor with no arguments, a formatter object will be made with default pattern of: MM/dd/yy, H:mm aa The constructor accepts a string pattern: SimpleDateFormat formatter = new SimpleDateFormat( "EEE, MMM dd. In Java 8, several other classes are added to replace the existing date and time API, so it is not unusual to stumble upon deprecated constructors and methods when handling Date objects.Ĭreating a SimpleDateFormat object is fairly easy. SimpleDateFormat only works with Date objects and. When it comes to time and date format specifiers in Java, those components have two or more representations too - sometimes it is handy to use a short version, while longer versions are more concise and official. ![]() In the real world, some date or time components are often represented in more than one way. Format Specifiersĭate and time format specifiers are used for constructing patterns to represent data in a format we'd like to present it in. In this article we'll use Java's SimpleDateFormat to format dates.īefore formatting dates, you'll have to know How to Get the Current Date and Time in Java. Java provides an extensive API for handling date and time.
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