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Quiz on Java Keywords and Identifiers

Quiz on Java Keywords and Identifiers

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Question 1 of 10

1. Question

Which of the following is a valid Java keyword?

class
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ClassName
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method
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publicVoid
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Question 2 of 10

2. Question

What is true about Java keywords?

They can be used as variable names
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They are reserved and have special meaning
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They must start with a capital letter
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They are only used in comments
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Question 3 of 10

3. Question

Which of the following is a valid identifier in Java?

2value
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class
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_value
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for
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Question 4 of 10

4. Question

Which of these is not a keyword in Java?

static
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main
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this
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return
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Question 5 of 10

5. Question

Which of the following can be used as a valid variable name in Java?

$price
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break
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1value
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public
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Question 6 of 10

6. Question

What is the rule for naming an identifier in Java?

It can start with a digit
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It can contain spaces
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It can start with an underscore
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It must be in capital letters
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Question 7 of 10

7. Question

How many keywords are currently reserved in Java (as of Java 17)?

48
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42
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50
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53
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Question 8 of 10

8. Question

Can the word int be used as a variable name in Java?

Yes, but only in classes
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Yes, if written in capital letters
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No, it is a keyword
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Yes, inside a method
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Question 9 of 10

9. Question

Which of the following is a correct statement?

Java identifiers are case-insensitive
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Identifiers can contain special characters like # and @
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Identifiers cannot be the same as Java keywords
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Java allows spaces in identifiers
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Question 10 of 10

10. Question

Which of the following is not allowed in Java identifiers?

Letters and digits
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Underscores (_)
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Dollar signs ($)
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Spaces
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