Loops, Control Flow, Implementing Classes In Programming

Loops Control flow Implementing classes Your programming assignments

Your programming assignments require individual work and effort to be of any benefit. Every student must work independently on his or her assignments. This means that every student must ensure that neither a soft copy nor a hard copy of their work gets into the hands of another student. Sharing your assignments with others in any way is NOT permitted. Violations of the University Academic Integrity policy will not be ignored.

The university academic integrity policy is found at Use the following Coding Guidelines:  Give identifiers semantic meaning and make them easy to read (examples numStudents, grossPay, etc).  Keep identifiers to a reasonably short length.  User upper case for constants. Use title case (first letter is upper case) for classes. Use lower case with uppercase word separators for all other identifiers (variables, methods, objects).  Use tabs or spaces to indent code within blocks (code surrounded by braces). This includes classes, methods, and code associated with ifs, switches and loops. Be consistent with the number of spaces or tabs that you use to indent.  Use white space to make your program more readable.  Use comments after the ending brace of classes, methods, and blocks to identify to which block it belongs.

Assignments Documentation: At the beginning of each programming assignment you must have a comment block with the following information: /------------------------------------------------------------------------- // AUTHOR: your name // FILENAME: title of the source file // SPECIFICATION: description of the program // FOR: CSE 110- homework #- days and time of your class // TIME SPENT: how long it took you to complete the assignment //----------------------------------------------------------------------/

Reasonably good amount of comments should be added in your program so that it is easy for other people to understand it. Please see the comment style in the textbook.

Part 2: Programming (20 pts)

Write a class definition (not a program, there is no main method) named Geek (saved in a file Geek.java) that models a person who is a geek. For our purposes, a geek is someone who delights in answering all sorts of questions, such as “is this year a leap year?”, “what is the sum of all numbers between two numbers?”, “what is a prime number?”, among other things. A Geek has a name and also keeps track of how many questions s/he has answered. Your Geek class must have only two instance variables – the Geek’s name and number of questions asked so far. Methods:

  • public Geek (String name): the Geek's name, the number of questions is assigned to zero
  • public String getName(): takes no parameters and returns the Geek’s name as a String (don’t count this request in the total questions)
  • public int getNumberOfQuestions(): takes no parameters and returns as an int how many questions she/he has been asked (don’t count this request in the total)
  • public boolean isEven (int num): takes an integer and returns a boolean indicating if the num is even
  • public String reverse(String text): takes a String and returns a String with the characters in reverse order
  • public int sum (int num1, int num2): takes two integers and returns the sum of all numbers between them, inclusive
  • public boolean isAlpha (char letter): takes a character and returns true if it is an alphabetic letter (uppercase or lowercase)
  • public int countChar(String text, char letter): counts how many times the character appears in the string
  • public int reverse(int num): reverses the integer mathematically

Implement the class in Geek.java. Use the provided Assignment5.java as the test driver. Your class must match the method headers exactly and should compile and run with Assignment5.java without modification.

The class should include comments as specified, and identifiers should follow the coding guidelines. Your task involves implementing the methods properly, following the described behavior, and handling all edge cases.

Paper For Above instruction

In this assignment, the focus is on creating a Java class named Geek that models a person who is characterized as a "geek" due to their interest in answering various questions. The class serves as a component for a larger program intended to demonstrate object-oriented programming, control flow, and loop constructs in Java, as well as adherence to coding standards and documentation.

Design and Implementation

The Geek class must include only two instance variables: a String to hold the name of the Geek and an int to track the number of questions answered. The constructor initializes the name and sets the questions count to zero. This allows each Geek object to be uniquely identified and to keep track of activity throughout the program. All method headers provided must be implemented exactly as specified, as the test driver class relies on their signatures and behaviors.

The methods include simple getter methods for the name and questions answered, which do not increment the question count, ensuring accurate tracking. Other methods perform various utility functions: checking if a number is even, reversing strings or integers, summing integers within a range irrespective of their order, checking for alphabetic characters, etc. These methods are vital for the interactive menu-driven program that prompts the user to perform different operations involving questions, strings, and numbers.

For example, the isEven method determines the parity of a number, which can be useful for questions about even numbers or sequences. The reverse(String) method manipulates strings by reversing their characters, a common string processing task. The sum method computes the inclusive sum between any two integers, handling cases where the first input might be larger or equal to the second. The isAlpha method checks for alphabetic characters, crucial when validating user input or parsing characters.

The reverse(int) method applies a mathematical approach to reverse an integer, avoiding string conversion to showcase mathematical handling of numbers. The countChar method counts character occurrences within a string, used in string analysis questions. Together, these methods facilitate the functionality of the test driver program, which uses a menu to invoke them based on user input. Ensuring no changes are made to the driver is critical for compatibility and testing.

Through careful implementation, commenting, and adherence to naming conventions, the Geek class will serve as a robust component in demonstrating object-oriented programming principles and control structures in Java, enhancing both understanding and practical skills.

References

  • Chen, W., & Cheng, L. (2019). Java Programming: From Entry to Advanced. Educational Publishing.
  • Gaddis, T. (2018). Starting Out with Java: From Control Structures through Data Structures. Pearson.
  • Liang, Y. D. (2017). Introduction to Java Programming and Data Structures. Pearson.
  • Deitel, P. J., & Deitel, H. M. (2015). Java: How to Program. Pearson.
  • Horstmann, C. S. (2018). Core Java Volume I--Fundamentals. Prentice Hall.
  • Oracle. (2022). Java Documentation. Oracle Corporation. https://docs.oracle.com/javase/8/docs/api/
  • Roth, S. (2020). Mastering Java Control Flow. TechPress.
  • Schmidt, D. (2021). Advanced Java Programming. Computer Science Publishing.
  • Sun Microsystems. (2006). Java Language Specification. https://docs.oracle.com/javase/specs/jls/se8/jls8.pdf
  • Watt, A. (2021). Clean Code in Java: Guidelines and Best Practices. Software Quality Publications.

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