CMPS 134 Fall 2025
Test #2 (Nov. 17) preview

• Know everything that you were supposed to know for Test #1!
• Expect a question in which you are given a set of terms having to do with Java programming and a list of statements each of which has one or more blanks to be filled in by terms in the given set. Example:
  • In the context of a Java "instance" class, a(n) _______ method is one that returns information about the state of a(n) _______.

  The answers are observer and object.

• Expect a problem that includes a variety of multiple choice questions, some of which show Java code and ask you about the results of its execution or about the terminology that is used in talking about the elements that appear in it (e.g., parameters, variables, methods, arrays, etc.)
• Expect a problem in which you are called upon to develop Java code that involves an if-else statement and/or a while-loop for the purpose of solving a relatively simple computational problem.
• Expect a problem in which a Java code segment (or method) is given, along with output that it could possibly produce. The problem would ask you to identify an input value that would lead to that output being produced. Here is a (very) simple example:

  Identify a value of n (assumed to be of type int) that would cause the following Java code to output the string "EEK":

  if (n < 10) {    if (n <= 4) { System.out.println("UMPH"); }    else { System.out.println("EEK"); } else    { System.out.println("BLORP"); }

  The correct answers are the integers in the range [5..10).

• Expect a problem in which you are to transform a string given in one form (e.g., a calendar date such as "16-8-2021" in in D-M-Y form) into another form (e.g., the corresponding calendar date in M/D/Y form: "8/16/2021").
• Expect a question in which you are to develop a method that reads (and then processes) data from a file, where the format of that data is carefully specified. (Examples are the EmployeeGrossPay programs.)
• Expect a problem in which you are given the code of an "instance" class (i.e., one from which it is intended that objects will be created, similar to TossableCoin or UmpireClicker) and you are asked to supply the body of a method that either creates or is given an object of that class (e.g., via a parameter) and that carries out some specified task with that object.
  Example: Develop a main() method that creates a TossableCoin object, tosses it until TAILS occurs three consecutive times, and reports how many tosses occurred up to that point.
• Expect a problem in which you are given the code of an "instance" class (e.g., TossableCoin, UmpireClicker) and are asked to add a new method with some specified functionality, or to modify an existing method so that it behaves a little differently than the original version.
• Expect a problem in which you are asked to develop a Java method that does something similar to a method found in one of the programming assignments. (Quizzes #2 and #3 had problems like this.)