Are static methods offered by wrapper classes often used?

Question

I'm curious if static methods of wrapper classes are really helpful.

Which of them are most useful and popularly used? Can you present any must-know tricks involving these methods?

Thanks in advance.

For example. Are there any other interesting and worth-mentioning? I see Java offers quite a lot of them, even `Boolean` type has them :) — Maciej Ziarko, Mar 21 '11 at 00:55
Wrapper methods made me curious. I have C++ background, so it's a new thing to me. I wanted to know if I should be familiar with some of them to be effective. If you know any other nice usages, share with us :) — Maciej Ziarko, Mar 21 '11 at 08:36

score 1 · Answer 1 · answered Mar 21 '11 at 00:53

1

Integer.parseInt(..) is used a lot. I don't have statistics though. I've used half of them, but of course they are all useful in certain contexts.

answered Mar 21 '11 at 00:53

Bozho

score 1 · Accepted Answer · answered Mar 21 '11 at 01:04

1

The compare methods are useful to handle the primitive counterparts.

static int  compare(primitive p1, primitive p2) 
          Compares the two specified primitive values.

Possible use:

@Override
public int compareTo(MyClass other){
    return Double.compare(this.myDoubleField, other.myDoubleField);
}

answered Mar 21 '11 at 01:04

Enno Shioji

Never used this, it must be new. (Hmm, since 1.4. I'm old.) – Paŭlo Ebermann Mar 21 '11 at 02:50

score 0 · Answer 3 · answered Mar 21 '11 at 02:30

0

Integer.toString(...) is used for turning an integer to string without resorting to "" + i.

answered Mar 21 '11 at 02:30

Nikola

You can also write `String.valueOf(...)` (which supposedly delegates to this method) - this works for every type, even for `null`. – Paŭlo Ebermann Mar 21 '11 at 02:48

3 Answers3