Introduction to Java Programming and Data Structures, Comprehensive Version Plus MyProgrammingLab with Pearson EText -- Access Card Package
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Chapter 13.8, Problem 13.8.2CP

Explanation of Solution

Abstract class:

An abstract class is a class which may or may not include abstract methods and cannot be instantiated but rather can be sub classed.

Legal abstract class:

The conditions for a class to be considered as legal abstract class are mentioned below:

  • If a class includes abstract methods, then the class must be declared as abstract.
  • The abstract method that is declared within the abstract class must be declared without braces and followed by a semicolon.

Interface:

Interface is a reference type in Java, which contains a collection of abstract methods.

An interface needs to the follow certain conditions such as:

  • One cannot instantiate an interface.
  • Interfaces do not contain any constructors.
  • All methods present in the interface are abstracts.
  • An interface does not contain any instance field.
  • An interface cannot be extended by a class.

Similarities between abstract classes and interfaces:

Some of the similarities between abstract classes and interfaces are mentioned below:

  • One cannot create objects for both abstract classes and interfaces.
  • All the abstract methods must be overridden by the sub class in both interfaces and interfaces.
  • One can create reference variables for both abstract classes and interfaces...

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2. Perform resource allocation for the following project. Resource limits are 6 labors and 2 helpers. Legend: Activity Dur Resources G H 2 3 2L 1H 2L OH A 1 3L 1H + B D F J K 3 4 6 2 4 4L 2H 3L OH 4L 1H 2L 2H 4L 2H C E 2 2 I 1 2L 1H 3L 1H 5L 1H
Need Java method please. Thank you.
Need Java method please. Thank you.

Chapter 13 Solutions

Introduction to Java Programming and Data Structures, Comprehensive Version Plus MyProgrammingLab with Pearson EText -- Access Card Package

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