Checked , Unchecked Exceptions

Checked vs Unchecked Exceptions :
• The Exceptions which are checked by the compiler for smooth execution of program at Runtime are called checked Exceptions.
• The Exceptions which are unable to check by the compiler are called Unchecked Exceptions.
• Runtime Exception and its child classes: Error and its child classes are Unchecked Exceptions. While the remaining all are Unchecked Exceptions.

Partially Checked vs Fully Checked :
A Checked Exception is said to be Fully Checked Exception if and only if all its child classes are also checked. Otherwise it is Partially Checked Exception.
Ex: IOException is Fully Checked Exception
Exception is Partially Checked
Throwable is Partially Checked