using nested try statement in java

Question

I have some problem with the nested try statements in java and I am asked to use try nested statements instead of if()

here is the some part of the code which I need to use nested try statement

 public Date subtractYear() throws Exception
  {
    if (day == 29 && month == 2)
      return new Date(28, month, year - 1);
    else
      return new Date(day, month, year - 1);
  }

I ll give another part of the code may be it ll be more helpful — Can Genc
– Can Genc, Commented Feb 29, 2012 at 16:32
Dude, if and try are two different areas. refer docs.oracle.com/javase/tutorial/essential/exceptions/index.html and docs.oracle.com/javase/tutorial/java/nutsandbolts/if.html — namalfernandolk
– namalfernandolk, Commented Feb 29, 2012 at 17:03

Ryan Ransford · Accepted Answer · 2012-02-29 16:56:43Z

4

The above code is wrong at best and dangerous at worst. There are reasons why the Date and Calendar classes exist. Managing leap years is one of them.

The above code should only see production in cases where you really understand what you are doing and need to achieve performance by this means. Your best bet is as follows:

public Date subtractYear() {
  final Calendar c = new Calendar();
  c.set(year, month, day); // set your class's "current" date
  c.add(Calendar.YEAR, -1); // remove 1 year
  return c.getTime(); // get the Date object back from the Calendar
}

As an additional comment, using try-catch blocks for handling normal program flow is typically a bad way to handle things which you are expecting on a normal basis. The generation of exception stack traces is a costly operation.

answered Feb 29, 2012 at 16:56

Ryan Ransford

3,2201 gold badge30 silver badges35 bronze badges

Sign up to request clarification or add additional context in comments.

Collectives™ on Stack Overflow

using nested try statement in java

1 Answer 1

Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

Comments

Your Answer

Sign up or log in

Post as a guest

Related