Final Exam CSE 2221/21 Complete Q’s
and A’s
In design-by-contract, the code responsible for making sure the precondition
(requires clause) is true when a method is called is:
a. code that implements method
b. code that compiled method
c. code that calls method
d.code that designed method
e. code that signed the contract - - c
- The Java Virtual Machine (JVM) is responsible for:
a. improving the performance of a java program (compared to running
directly on the hardware/OS)
b. storing java programs for execution at a later time
c. executing the java bytecode found in a .class file
d. compiling the java source code in a .java file into bytecode
e. copying java programs from one user to another - - c
- Under design-by-contract which of the following statements is true?
a. implementer may assume that the postcondion(ensures clause) is true
when writing the method
b. the implementer may assume that the precondition(requires clause) is
true when writing the method
c. the implementer must make sure that the precondition (requires clause) is
true when the method returns
d. the implementer must write the method so it throws an exception if the
client does not satisfy the precondition(requires clause) - - b
- model - - Responsible for handling program state changes.
- view - - Responsible for the part of the program visible to the user.
- controller - - Executes callback upon user interaction
- observer - - Keep track of information in the program.
- subject - - Provides callback that is used in user interactions.
- event - - A user interacts with the program.
- Jframe - - main window
- DemoGUI - - body of actionPerformed method
The benefits of buying summaries with Stuvia:
Guaranteed quality through customer reviews
Stuvia customers have reviewed more than 700,000 summaries. This how you know that you are buying the best documents.
Quick and easy check-out
You can quickly pay through credit card or Stuvia-credit for the summaries. There is no membership needed.
Focus on what matters
Your fellow students write the study notes themselves, which is why the documents are always reliable and up-to-date. This ensures you quickly get to the core!
Frequently asked questions
What do I get when I buy this document?
You get a PDF, available immediately after your purchase. The purchased document is accessible anytime, anywhere and indefinitely through your profile.
Satisfaction guarantee: how does it work?
Our satisfaction guarantee ensures that you always find a study document that suits you well. You fill out a form, and our customer service team takes care of the rest.
Who am I buying these notes from?
Stuvia is a marketplace, so you are not buying this document from us, but from seller Nursephil2023. Stuvia facilitates payment to the seller.
Will I be stuck with a subscription?
No, you only buy these notes for $7.49. You're not tied to anything after your purchase.