1.) I am developing an ADT class in Java and have decided to make use of the exception processing capabilities built into Java for responding to error conditions in the ADT's operations.

At the implementation level, what aspects of Java exception processing must I include in my code?

2.) What is the Big-O notation for the execution time of an algorithm that is invariant with respect to the amount of data processed?

3.)A non-abstract class that implements a Java interface must include a definition for all of the abstract methods in the interface. true or false?