An interface with “ only one abstract method ” is called as functional interface. Hence, the correct answer is option “ A ”.

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Chapter 9, Problem 19MC

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An interface with “only one abstract method” is called as functional interface.

Hence, the correct answer is option “A”.

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Last Chance Securities The IT director opened the department staff meeting today by saying, "I've got some good news and some bad news. The good news is that management approved the payroll system project this morning. The new system will reduce clerical time and errors, improve morale in the payroll department, and avoid possible fines and penalties for noncompliance. The bad news is that the system must be installed by January 1st in order to meet new federal reporting rules, all expenses from now on must be approved in advance, the system should have a modular design if possible, and the vice president of finance would like to announce the new system in a year-end report if it is ready by mid-December." Tasks 1. Why is it important to define the project scope? How would you define the scope of the payroll project in this case? 2. Review each constraint and identify its characteristics: present versus future, internal versus exter- nal, and mandatory versus desirable. 3. What…

2. Signed Integers Unsigned binary numbers work for natural numbers, but many calculations use negative numbers as well. To deal with this, a number of different methods have been used to represent signed numbers, but we will focus on two's complement, as it is the standard solution for representing signed integers. 2.1 Two's complement • Most significant bit has a negative value, all others are positive. So, the value of an n-digit -2 two's complement number can be written as: Σ2 2¹ di 2n-1 dn • Otherwise exactly the same as unsigned integers. i=0 - • A neat trick for flipping the sign of a two's complement number: flip all the bits (0 becomes 1, or 1 becomes 0) and then add 1 to the least significant bit. • Addition is exactly the same as with an unsigned number. 2.2 Exercises For questions 1-3, answer each one for the case of a two's complement number and an unsigned number, indicating if it cannot be answered with a specific representation. 1. (15 pts) What is the largest integer…

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Chapter 9, Problem 19MC

Program Description Answer

An interface with “only one abstract method” is called as functional interface.

Hence, the correct answer is option “A”.

Expert Solution & Answer

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Check out a sample textbook solution

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Chapter 9, Problem 19MC

Program Description Answer

An interface with “only one abstract method” is called as functional interface.

Hence, the correct answer is option “A”.

Expert Solution & Answer

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Check out a sample textbook solution

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Answer 4

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Chapter 9, Problem 19MC

Program Description Answer

An interface with “only one abstract method” is called as functional interface.

Hence, the correct answer is option “A”.

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Answer 7

Chapter 9, Problem 19MC

Program Description Answer

An interface with “only one abstract method” is called as functional interface.

Hence, the correct answer is option “A”.

Answer 8

Chapter 9, Problem 19MC

Program Description Answer

An interface with “only one abstract method” is called as functional interface.

Hence, the correct answer is option “A”.

Answer 9

Chapter 9, Problem 19MC

Program Description Answer

An interface with “only one abstract method” is called as functional interface.

Hence, the correct answer is option “A”.

Answer 10

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Ch. 9.1 - Here is the first line of a class declaration....Ch. 9.1 - Look at the following class declarations and...Ch. 9.1 - Class B extends class A. (Class A is the...Ch. 9.2 - Prob. 9.4CP Ch. 9.2 - Look at the following classes: public class Ground...Ch. 9.3 - Under what circumstances would a subclass need to...Ch. 9.3 - How can a subclass method call an overridden...Ch. 9.3 - If a method in a subclass has the same signature...Ch. 9.3 - If a method in a subclass has the same name as a...Ch. 9.3 - Prob. 9.10CP

An interface with “ only one abstract method ” is called as functional interface. Hence, the correct answer is option “ A ”.

Solution Summary: The author explains that functional interfaces are required in lambda expressions because they help compiler understand the expression.

An interface with “only one abstract method” is called as functional interface.

Hence, the correct answer is option “A”.

Want to see the full answer?

Chapter 9 Solutions

An interface with “ only one abstract method ” is called as functional interface. Hence, the correct answer is option “ A ”.

Solution Summary: The author explains that functional interfaces are required in lambda expressions because they help compiler understand the expression.

An interface with “only one abstract method” is called as functional interface. Hence, the correct answer is option “A”.

Want to see the full answer?

Chapter 9 Solutions

An interface with “only one abstract method” is called as functional interface.

Hence, the correct answer is option “A”.