Exam #2 (CMSC132 (Fall 2022))

• Date: Friday, Oct 21, 2021
• Time/Location: Your exam will take place in lecture.
• Duration: 50 minutes
• Closed-book, Closed-notebooks, No Computers/Calculators.
• Use a pencil/mechanical pencil (no pen) to answer the exam.
• Bring a good eraser
• Posting any information in Piazza about the exam after taking it is considered an academic integrity violation.
• Do not separate the pages of the exam (e.g., remove the staple).This will interfere with the scanning process.
• You need to bring your student id to the exam.
• We provide space in the exam to be used as scratch area (you cannot bring your own scratch paper).

• Short answer questions: This includes for example, multiple choice, true/false, and fill-in-the-blank type questions.
• Code analysis questions: We will give a short segment of code and you may be asked to identify syntax and logical errors, generate code output, etc.
• Code Writing: Write a program/code snippets to solve a given problem. You should be prepared to give a complete program/class, but we may also ask you to provide just a single method or a code fragment.

The exam will include all the material covered during Week 4 to Week 7 in discussion session (lab), lecture, and projects, including the following topics:

• Object-Oriented Programming Principles (Abstraction, Encapsulation, etc.)
• OO Design
• Testing/Program Correctness
• Code Coverage
• Algorithmic Complexity
• 3 Levels of Copying
• Garbage Collection
• New Java features post version 8
• Specific Java Topics
  • Definition and use of classes in inheritance relationships
  • Definition and use of Java Interfaces
  • Abstract Classes
  • Arrays
  • ArrayList
  • StringBuffer (be familiar with the append method that takes a string as a parameter and
    the constructor that takes a String as parameter)
  • Iterators (Be able to write code to make one)
  • Comparable Interface
  • Comparator Interface
  • Iterable Interface
  • "this"
  • "super"
  • Collections class methods (those used for the projects)
  • Enhanced for loop
  • Enumerated types
  • Autoboxing and Unboxing
  • Exceptions
  • Visibility Modifiers
  • Method Overloading/Overriding
  • equals method
  • Packages
  • The 4 types of nested types
  • Lambda Expressions
  • clone method
  • Initialization blocks (both non-static and static)
  • Basics of JCF
  • Defining Generic Classes and methods
  • Wildcards and bounded wildcards with extends and super keywords
• All CMSC 131 topics
• All Week 1 to Week 3 CMSC 132 topics
• Singleton and Decorator Design Patterns
• State Design Pattern/Dynamic Systems

The exam will NOT cover the following topics:

• Linked lists, Java FX

Here are actual exam 2 from Fall 2018, Fall 2019, and Fall 2021: PreviousExamsII.zip . I am just making this available for extra practice, but remember the coverage and questions on your exam in Fall 2022 will be different than what we did in the past.

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