Checked & Unchecked Exceptions

http://tutorials.jenkov.com/java-exception-handling/checked-or-unchecked-exceptions.html

• Checked exceptions require throws all the way up the call stack, but unchecked exceptions don’t.
• NullPointerExceptions are unchecked.
• Error and subclasses are unchecked.
• Unchecked exceptions inherit from RuntimeException, checked exceptions inherit from Exception.