The Character class in Java is a wrapper class for the primitive char data type. It provides useful static methods to test and manipulate characters, such as checking if a character is a digit, letter, whitespace, or converting case.
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What is the return type of Character.toUpperCase(‘a’)?
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Question 6 of 15
6. Question
Which of these returns true for whitespace?
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Question 7 of 15
7. Question
What does Character.toLowerCase(‘Z’) return?
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Question 8 of 15
8. Question
Which of the following checks if a character is uppercase?
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Question 9 of 15
9. Question
What is the result of Character.isDigit(‘9’)?
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Question 10 of 15
10. Question
Which method checks if a character is a letter or digit?
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Question 11 of 15
11. Question
Can the Character class store more than one character?
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Question 12 of 15
12. Question
What is auto-boxing in context of Character?
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Question 13 of 15
13. Question
Which of the following is valid?
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Question 14 of 15
14. Question
Which method converts a digit character to its numeric value?
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Question 15 of 15
15. Question
What will Character.isLowerCase(‘X’) return?
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Summary
The Java Character class is a part of the java.lang package and is used to work with single character values. It includes methods like isLetter(), isDigit(), isUpperCase(), and toLowerCase() that help check character types and convert cases efficiently.
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