How to get current time in java without Creating an Object each time?

Question

I know there are a lot os posts about how to get the current time in java. But im planning to code a getAge Method in a Persona class. The problem is, I need to get the current time each time method is called. Let's say a billion clients execute getMethod(with miliseconds, perhaps seconds of difference), a billion of objects will be created for such a simple thing. The only thing I did was create a member static in Person, so Person will share the instace. But this doesnt prevent the object creation. ``` public class Person{ //Some Attributes private static Calendar now; private Calendar birthDate; public short getAge(){ now = Calendar.getInstance(); return (short) (( now.getTimeInMillis() - birthDate.getTimeInMillis())/ 31536000000L; }} ``` If you know some library that have this implemented without the waste of such heap size. Please tell me. Thanks.

Accepted Answer

You can also create a Calendar instance once and keep calling:

```
calendar.setTimeInMillis ( System.currentTimeMillis() );
```

to set the current time in calendar instance and use that calendar object to do any date calculation.

How to get current time in java without Creating an Object each time?

Solution

Problem