But wait! There’s more! Wrappers have static utility methods too!

Besides acting like a normal class, the wrappers have a bunch of really useful static methods. We’ve used one in this book before—Integer.parseInt().

The parse methods take a String and give you back a primitive value.

Converting a String to a primitive value is easy:

But if you try to do this:

You’ll get a runtime exception:

Every method or constructor that parses a String can throw a NumberFormatException. It’s a runtime exception, so you don’t have to handle or declare it. But you might want to.

(We’ll talk about Exceptions in the next chapter.)