Question

Is there any way to update only a Date’s time path?
I tried Date.setTime() but it replaces the date path too. I there any java method or the only way is to set hour, minute, second and milisecond?

Thank you

Answer 1

A Java Date is just a wrapper around a long that counts time from the epoch (January 1, 1970). Much more flexible is Calendar. You can create a Calendar from a Date:

Date date = . . .;
Calendar cal = new GregorianCalendar();
cal.setTime(date);

Then you can set various fields of the Calendar:

cal.set(Calendar.HOUR_OF_DAY, 8);
// etc.