Are static methods offered by wrapper classes often used?

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

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

Thanks in advance.

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);
}

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.

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