Frankly, I love Java's checked and un-checked exceptions differentiation even if the standard library is confused about it. Make logical exceptions (depending

Frankly, I love Java's checked and un-checked exceptions differentiation even if the standard library is confused about it. Make logical exceptions (depending on purpose of interface) into checked-exceptions. Make system exceptions into un-checked exceptions. Document in javadoc with `@throws` A higher level module can wrap and re-throw into the appropriate exception if needed. Error handling can be done in the desired place instead of scattered across the code.