Java Programming for Complete Beginners - Java 16 - Step 14 - Java Reference Types – Conclusion

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Information Technology (IT), Architecture, Social Studies
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University
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5 questions
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1.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What is a key difference between reference variables and primitive variables in Java?
Reference variables store actual data values.
Primitive variables store memory addresses.
Reference variables store memory addresses.
Primitive variables can only store objects.
2.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which of the following is an alternative to the String class in Java?
StringSet
StringArray
StringList
StringBuffer
3.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Why are wrapper classes necessary in Java?
To allow primitive types to be used in mathematical operations.
To provide a way to use primitive types as objects.
To reduce memory usage of primitive types.
To increase the speed of primitive operations.
4.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
Which method would you use to add days to a LocalDate object in Java?
appendDays()
addDays()
plusDays()
incrementDays()
5.
MULTIPLE CHOICE QUESTION
30 sec • 1 pt
What can the LocalDateTime API in Java be used for?
To manipulate time zones.
To perform arithmetic operations on numbers.
To handle date and time without time zone considerations.
To manage file input and output operations.
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