Errors vs Exceptions

	ERROR	EXCEPTION
Basic	caused due to a lack of system resources	caused because of the code
Recovery	irrecoverable	recoverable
Keywords	no means to handle an error by the program code	handled using three keywords “`try`”, “`catch`”, and “`throw`”
Consequences	will terminate program abnormally	is thrown and caught by the “`try`” and “`catch`” keywords correspondingly
Types	unchecked exception	checked exception or unchecked exception
Package	“`java.lang.Error`” package	“`java.lang.Exception`” package
Examples	`OutOfMemory`, `StackOverFlow`	Checked Exceptions: `NoSuchMethod`, `ClassNotFound` Unchecked Exceptions: `RuntimeException`: `NullPointerException` `IndexOutOfBoundsException` `ArithmeticException`

Checked Exceptions vs Unchecked Exceptions

	CHECKED EXCEPTION	UNCHECKED EXCEPTION
Basic	the compiler CHECKS the checked exception	the compiler does NOT CHECK the unchecked exception
Class of Exception	all subclasses of `Exception` (except `RuntimeException`)	all subclasses `RuntimeException` all subclasses of `Error`
Handling	compiler REQUIRES developer to handle checked exceptions	compiler DOESN’T REQUIRE developer to handle unchecked exceptions
Compilation	program doesn’t compile if there is an unhandled checked exception in the program code.	program compiles successfully even if there is an unhandled unchecked exception in the program code

Throwable is the parent class of the classes Error and Exception
unchecked exceptions - are the subclasses of RuntimeException and the subclasses of Error
checked exceptions - are the remaining subclasses of Exception except RuntimeException