Checked Exceptions vs Unchecked Exceptions/ Runtime Exceptions

Item 70 @ Effective Java by Joshua Bloch,

"Use checked exceptions for recoverable conditions and run-time exceptions for 

programming errors."

Checked Exceptions

Exceptions that are evaluated at compile time. The simple rule of thumb is, if a method code is referring an another code that throws an exception, either it should handle it using Try/ Catch block or throw it.

Unchecked Exceptions

Unchecked exceptions are the exceptions that are not evaluated at compile time. It means it is not enforced to handle them. 

Run Time Exceptions

Run time Exceptions along with Error are unchecked exceptions in Java.

References

https://docs.oracle.com/javase/tutorial/essential/exceptions/runtime.html

https://www.oreilly.com/library/view/effective-java-3rd/9780134686097/