ITSC 1213 UNCC Java Programming Practice Final Exam – 100% Verified Questions & Answers

ITSC 1213 UNCC PRACTICE FINAL EXAM
QUESTIONS 100% VERIFIED ANSWERS


A test case can't return an error when the code is correct.

true

false
- answers-false

An abstract class can be _____________.

instantiated

all of the above

extended

without constructor
- answers-extended

An abstract class cannot be _____________.

extended

all of the above

instantiated

assigned as a type for an object reference
- answers-instantiated

An array can have several different types of data simultaneously.

false

true
- answers-False

, An array can hold multiple values of the same type of data.

false

true
- answers-true

Class Book inherits from class Product. Select all of the following ArrayLists that could
hold Book-type objects

ArrayList<Book> = new ArrayList<>();

ArrayList<Object> = new ArrayList<>();

ArrayList<String> = new ArrayList<>();

ArrayList<Product> = new ArrayList<>();
- answers-ArrayList<Book> = new ArrayList<>();

ArrayList<Object> = new ArrayList<>();

ArrayList<Product> = new ArrayList<>();

Given a document "employees.txt" that contains the following lines:
Name,Dept,ID
Manar,Sale,801
Sami,Engineering,802
Dalia,Production,800
David,Sale,804
Omar,Sale,805
Rama,Sale,806

and the following code that reads this file:

ArrayList<String> empData = new ArrayList();

fileScanner = new Scanner(new File("employees.txt"));
fileScanner.nextLine();

while (fileScanner.hasNextLine()) {
String line = fileScanner.nextLine();
String[] lineArray = line.split(",");
if (lineArra[1] == "Sale" && lineArray[2] > 801) ) {
empData.add(lineArray[0]);
}
}