在这种情况下抛出什么适当的异常？

Question

public Item getItem(String name){
    if(someContainer.containsKey(name)) return someContainer.get(name);
    throw new /*...*/Exception("Item doesn't exist");
}

What kind of exception is appropriate to throw in this case? IllegalArgumentException doesn't feel quite right.

Answer 1

Just create your own (how about ItemNotFoundException ?)

It makes catching and reacting to it easier, too, because you can catch exactly that exception, and not an IllegalArgumentException that might be thrown somewhere else.