Java Programming
Authored by T K
Computers, Science
Professional Development
Used 6+ times
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15 questions
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1.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
Choose correct option.
Base::show() called
Derived::show() called
Compiler Error
Runtime Error
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Suppose that you have a collection of products for sale in a database and you need to display those products. The products are not unique. Which of the following collections classes in the java.util package best suit your needs for this scenario?
Arrays
ArrayList
HashMap
HashSet
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Suppose that you need to work with a collection of elements that need to be sorted in their natural order, and each element has a unique string associated with its value. Which of the following collections classes in the java.util package best suit your needs for this scenario?
ArrayList
HashMap
HashSet
TreeMap
TreeSet
4.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What is the result of the given statements?
onetwo
onetwo7
Compiler error on line 6
Compiler error on line 7
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the answer choices are valid given the following declaration?
Map<String, Double> map = new HashMap<>();
map.add("pi", 3.14159);
map.add("e", 2L);
map.add("log(1)", new Double(0.0));
map.add('x', new Double(123.4));
None of the above
6.
MULTIPLE CHOICE QUESTION
45 sec • 1 pt
What is the result of the given code?
16
25
Compiler error on line 3.
Compiler error on line 5.
A runtime exception is thrown.
7.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is the result of the given code?
false
true
Compiler error on line 4.
Compiler error on line 7.
A runtime exception is thrown.
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