adding hours in date time format java

Question

SimpleDateFormat parser = new SimpleDateFormat(\"HH:mm\");
Date time1 = parser.parse(\"7:30\");

Now if I want to add 2 more hours to time1

Answer 1

Convert java.util.Date into java.util.Calendar Object and use Calendar.add() method to add Hours

SimpleDateFormat parser = new SimpleDateFormat("HH:mm");
Date time1 = parser.parse("7:30");
Calendar cal =Calendar.getInstance();
cal.setTime(time1);
cal.add(Calendar.Hour_Of_Day, 2);
time1 =cal.getTime();
System.out.println(parser.format(time1));//returns 09:30