10.2 Recognizing Exception Classes

Question 1

What are the three key groups of exceptions in Java?

Answer 1

Error
UnCheckedException(RuntimeException)
CheckedException

Question 2

📝️ What is an UncheckedExceptions?

Answer 2

• > Unchecked exceptions are RuntimeExceptions or any of its subclasses
• > Exceptions that do NOT have to be anticipated (This is declared or handled)
• > They can be thrown by the programmer or the JVM.

Question 3

📝️ What are some common RuntimeException classes?

Answer 3

o ArithmeticException
o ClassCastException
o IllegalArgumentException
   └── NumberFormatException
o IndexOutOfBoundsException
   └── ArrayIndexOutOfBoundsException
o NullPointerException

Question 4

📝️ What are checked exceptions?

Answer 4

• > CheckedExceptions is any Exception that is not a RuntimeException
• > CheckedExceptions are checked at compile-time, this is it must be caught or declared

Question 5

📝️ What are some common checked exceptions?

Answer 5

o CloneNotSuportedExcetion
o InterruptedException
o IOException
o ReflectiveOperationException
o SQLException

Question 6

📝️What is an Error “exception”?

Answer 6

• > Error means something went so horribly wrong that your program should not attempt to recover from it.
• > They are thrown by the JVM and should NOT be handled or declared.

Question 7

📝️ What are some common Error “exceptions”?

Answer 7

o AssertionError
o LinkageError
      └── ExceptionInInitializerError
o ThreadDeath
o VirtualMachineError
      └── InternalError
      └── OutOfMemoryError
      └── StackOverflowError
      └── UnknownError