Thrown by API developer or JVM

[Mahtab Alam]

Which are most commonly thrown by an API developer or application developer as opposed to be thrown by JVM
Answers are:
IllegalArgumentException
IllegalStateException
NumberFormatException


I can`t understand what it means to be thrown by API developer

[Rachel Glenn]

Mahtab Alam wrote:Which are most commonly thrown by an API developer or application developer as opposed to be thrown by JVM
Answers are:
IllegalArgumentException
IllegalStateException
NumberFormatException


I can`t understand what it means to be thrown by API developer

What they mean is when you actually write a lne of code like this:

try{
   //do some code
    throw new IllegalArgumentException();
} catch (IllegalArgumentException e) {}

I don't think the Sierra and Bates book did a very good job of explaining the difference between JVM versus developer thrown exceptions and why a particular exception is thrown by JVM or developer.

I hope the example helps!