'Get date representation in seconds?

I am using an API which requires a date parameter as a number of seconds, an int.

My problem is that I currently store this time in java.util.date and I was wondering if there is some way to convert the java.util.date variable to seconds so that I can fit it into the int parameter which the API requires?

javadata-conversionjava.util.date


Solution 1:[1]

import java.util.Date;

... long secs = (new Date().getTime())/1000; ...

Please see - http://docs.oracle.com/javase/6/docs/api/java/util/Date.html#getTime()

Solution 2:[2]

Since Java 8 and onwards there's this elegant method which returns the Epoch time in seconds (seconds since 0:00:0 January 1st 1970). You can then store this value as an numeric value: a "long" in this case.

long timestamp = java.time.Instant.now().getEpochSecond();

Solution 3:[3]

java.util.Date.getTime() it returns the number of milliseconds since January 1, 1970, 00:00:00 GMT represented by this Date object.

    java.util.Date date=new Date();    
    System.out.println(date.getTime());

Output: 1340128712111

To get seconds from milliseconds you need to divide it by 1000.

long secs = date.getTime()/1000;
System.out.println(secs);

Output: 1340128712

Alternatively Instant.getEpochSecond() returns the number of seconds from the Java epoch of 1970-01-01T00:00:00Z. Its available since Java v1.8 docs.

Solution 4:[4]

Number of seconds by itself doesn't mean much. Number of seconds within the current minute? Number of seconds since 0:00:00 Janurary 1st, 1970? Number of seconds since lunch? Could you be more specific.

Put it into the API also doesn't mean much, unless you specify exactly which API you are using, and where you are attempting to put these seconds.

Sources

This article follows the attribution requirements of Stack Overflow and is licensed under CC BY-SA 3.0.

Source: Stack Overflow

Solution Source
Solution 1 Karthik Kumar Viswanathan
Solution 2 ????? ??
Solution 3
Solution 4 Edwin Buck

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