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CMSC 131 Exam 2 Questions & Answers 2024/2025
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CMSC 131 Exam 2 Questions & Answers 2024/2025
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CMSC 131 Exam 2 Questions & Answers2024/2025
Which kinds of variables are given default values if you do not initialize them? (Local/ instance/static?
Which ones?) - ANSWERSInstance and static
What default values are used for the variables mentioned above? - ANSWERSprimitives are all set to 0;
reference variables are set to "null"
What is JUnit? - ANSWERSA useful feature of Java that allows us to quickly write unit tests for classes we
are writing
If an individual JUnit test has several separate assertions in it, will the test continue after one of the
assertions fails? - ANSWERSNO
If a JUnit test suite has several different JUnit tests in it (separate methods), will the rest of the tests run
after one of them fails? - ANSWERSYES
In what kind of methods does it make sense to use "this"? - ANSWERSinstance methods only
What does "this" refer to? - ANSWERSthe current object
If you do not write any constructors, what values will instance variables of the following primitive types
be assigned: int, double, boolean, char ? - ANSWERS0, 0.0, false, the character with ASCII code 0
If you do not write any constructors, what values will instance variables that are references by assigned?
- ANSWERSnull
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