Java get current timestamp
In this article, we will take a look at different methods to get current timestamp in java as an object of java.sql.Timestamp.
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Method 1: With System.currentTimeMillis()
To get the current system time, use currentTimeMillis()
method of System
class. The returned value is of type long
.
java.sql.Timestamp
constructor takes a long value. So, we can pass the returned value of System.currentTimeMillis()
. Example,
Timestamp timestamp2 = new Timestamp(System.currentTimeMillis()); System.out.println("Current timestamp is: "+timestamp2);
This prints
Current timestamp is: 2021-07-08 21:20:30.69
Method 2: From Date class
java.util.Date
has a getTime()
method which returns the date and time represented by the date object as a long
value.
This long
value can be supplied to Timestamp
constructor to get the current timestamp.
To get the date object for the current date, use the no-arg Date
constructor. Example,
Date date = new Date(); Timestamp timestamp = new Timestamp(date.getTime()); System.out.println("Current timestamp is: "+timestamp);
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Method 3: Using Java 8 Instant
Java 8 introduced java.time.Instant
class that represents an instant point of time. This class has a now()
method which returns the current instant as an Instant
object.
now()
is a static method and can be invoked using the class.
Java 8 added a new static method from()
to Timestamp class. It takes an object of type Instant
and returns its timestamp equivalent. Example,
Instant instant = Instant.now(); Timestamp timestamp = Timestamp.from(instant); System.out.println("Current timestamp is: "+timestamp);
Output is
Current timestamp is: 2021-07-08 22:03:53.343247
Format Timestamp
Default format of Timestamp is yyyy-MM-dd hh:mm:ss.SSS. If you want current timestamp in some other format, then use it with format()
method of java.text.SimpleDateFormat
as shown in the examples below.
Instant instant = Instant.now(); // get current timestamp Timestamp timestamp = Timestamp.from(instant); System.out.println("Current timestamp is: "+timestamp); // format to get date SimpleDateFormat date = new SimpleDateFormat("dd-MM-yyyy"); System.out.println("Date from timestamp :"+date.format(timestamp)); // format to get time SimpleDateFormat time = new SimpleDateFormat("hh:mm:ss"); System.out.println("Time from timestamp : "+time.format(timestamp));
This prints
Current timestamp is: 2021-07-09 22:07:50.475555
Date from timestamp :09-07-2021
Time from timestamp : 10:07:50
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That is all on different ways to get current timestamp in java using Date()
, System.currentTimeMillis()
and java 8 Instant
class with example programs.
Hope the article was useful.