Cpsc 2150 - Study guides, Class notes & Summaries

As a professional... correct answers - projects will be much more complex - will work on a large team - projects can span years, with incremental releases - will have to build off someone else's code Major projects don't rewrite the system with new versions but... correct answers change parts of the system Bad Coding Habits correct answers - lack of comments - poor design - code first, questions later - no testing - assumptions made - print to screen from anywhere Difference b...

Unlike when working with vim or emacs, in IntelliJ you can actually use your mouse while editing your code t/f correct answers true Once you are done working on your code in IntelliJ, you have to move it to Unix to run it. There is no way to run your code inside of IntelliJ t/f correct answers false IntelliJ includes it's own debugger, which allows you to easily set breakpoints to pause your program while its running and to view the current state of all the variables t/f correct ...

When zipping up our directory on unix, which flag will we use to include all the subdirectories and their files as well? correct answers -r Which of the following are included in a Makefile command? (may be more than one) correct answers target, dependencies, unix command to run In java, a main function must... correct answers Be inside of a class Be static Have one argument, an array of strings Anything that is not one of the 8 primitive data types in Java is a... correct answers Ref...

_________ make interfaces and classes reusable by parameterizing them correct answers Generics What is this an example of? public interface IStack <T> { public void push(T x); public T pop(); public int depth(); } correct answers Generic Interface How to instantiate a variable of type Integer? public interface IStack <T> { public void push(T x); public T pop(); public int depth(); } correct answers IStack<Integer> si = new Stack1<>(100); Java de...

A _____ can implement a _____ in Java. correct answers Class, Interface Abstract Class, Interface A _____ can extend a _____ in Java. correct answers Class, Class Interface, Interface Class, Abstract Class Newer Versions of Java (after Java 8) allow for private data fields in an interface, allowing you to write code for the methods that access the private data in the interface. correct answers False New versions of Java (8 and later) allow for code in our interface file as long as it...

Some important differences between Java and C++ include... correct answers -Every class in Java can have it's own main method -Everything in Java is inside a class -Since Java runs in its own virtual environment, the same Java code can run on any operating system In Java, a main method must.... correct answers -Be static -Have one argument, an array of Strings -Be inside of a class Anything that is not one of the 8 primitive data types in Java is a... correct answers Reference Data Ty...

Who is responsible for making sure that the precondition of a method is met? correct answers The client that calls the method Who is responsible for making sure that the postcondition of a method is met? correct answers The implementer of the method At which times is it safe to assume that the invariant of a class is true? correct answers After the constructor for the object has completed At the beginning of a public method After a public method has finished Which data types can be th...

Who is responsible for making sure that the precondition of a function is met? correct answers The client that calls the function Who is responsible for making sure that the post-condition of a function is met? correct answers The implementer of the function Is it a good practice to have each function start with an if statement that checks to make sure the preconditions are true? correct answers False True or False? The precondition automatically checks and enforces itself by checking t...

Generics Ans make interfaces and classes reusable by parameterizing them reference types Ans Java demands that generic arguments must be wrapper type Ans Each of the primitive types has a corresponding immutable Ans Wrapper types are reference types Ans Wrapper types are Aliasing Ans occurs when two or more references to an object exist within the object graph of a running program final keyword Ans The memory address can't change. However, you might be able to change the data s...

Who is responsible for making sure that the precondition of a function is met? - correct answer The client that calls the function Who is responsible for making sure that the post-condition of a function is met? - correct answer The implementer of the function Is it a good practice to have each function start with an if statement that checks to make sure the preconditions are true? - correct answer False True or False? The precondition automatically checks and enforces itself by checkin...