The isDigit, isLetter, and isLetterOrDigit methods are members of this class. a. String b. Char c. Character d. StringBuilder

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Answer 1

Textbook Question

Chapter 9, Problem 1MC

The isDigit, isLetter, and isLetterOrDigit methods are members of this class.

a. String
b. Char
c. Character
d. StringBuilder

Expert Solution & Answer

Program Description Answer

Methods of the class:

The methods “isDigit”, “isLetter”and “isLetterOrDigit” are some of the members of the class “Character”.

Hence, the correct answer is option “C”.

Explanation of Solution

Character class:

A wrapper class that is used for the char data type is called as “Character” class.
It contains various method for testing and converting the data that is of character type.
The character is a part of “java.lang” package and it does not needed to be imported for using the class.
It contains various static methods for testing the value of the character variables.

Reason for the incorrect answers:

String:

The class is used to represent character of strings.

Hence, the option “A” is wrong.

Char:

“char” is considered as the data type but not the class.

Hence, the option “B” is wrong.

StringBuilder:

The class is used to create a changeable strings and it is similar to String objects.

Hence, the option “D” is wrong.

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Answer 2

Textbook Question

Chapter 9, Problem 1MC

The isDigit, isLetter, and isLetterOrDigit methods are members of this class.

a. String
b. Char
c. Character
d. StringBuilder

Expert Solution & Answer

Program Description Answer

Methods of the class:

The methods “isDigit”, “isLetter”and “isLetterOrDigit” are some of the members of the class “Character”.

Hence, the correct answer is option “C”.

Explanation of Solution

Character class:

A wrapper class that is used for the char data type is called as “Character” class.
It contains various method for testing and converting the data that is of character type.
The character is a part of “java.lang” package and it does not needed to be imported for using the class.
It contains various static methods for testing the value of the character variables.

Reason for the incorrect answers:

String:

The class is used to represent character of strings.

Hence, the option “A” is wrong.

Char:

“char” is considered as the data type but not the class.

Hence, the option “B” is wrong.

StringBuilder:

The class is used to create a changeable strings and it is similar to String objects.

Hence, the option “D” is wrong.

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Answer 3

Textbook Question

Chapter 9, Problem 1MC

The isDigit, isLetter, and isLetterOrDigit methods are members of this class.

a. String
b. Char
c. Character
d. StringBuilder

Expert Solution & Answer

Program Description Answer

Methods of the class:

The methods “isDigit”, “isLetter”and “isLetterOrDigit” are some of the members of the class “Character”.

Hence, the correct answer is option “C”.

Explanation of Solution

Character class:

A wrapper class that is used for the char data type is called as “Character” class.
It contains various method for testing and converting the data that is of character type.
The character is a part of “java.lang” package and it does not needed to be imported for using the class.
It contains various static methods for testing the value of the character variables.

Reason for the incorrect answers:

String:

The class is used to represent character of strings.

Hence, the option “A” is wrong.

Char:

“char” is considered as the data type but not the class.

Hence, the option “B” is wrong.

StringBuilder:

The class is used to create a changeable strings and it is similar to String objects.

Hence, the option “D” is wrong.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 4

Textbook Question

Chapter 9, Problem 1MC

The isDigit, isLetter, and isLetterOrDigit methods are members of this class.

a. String
b. Char
c. Character
d. StringBuilder

Expert Solution & Answer

Program Description Answer

Methods of the class:

The methods “isDigit”, “isLetter”and “isLetterOrDigit” are some of the members of the class “Character”.

Hence, the correct answer is option “C”.

Explanation of Solution

Character class:

A wrapper class that is used for the char data type is called as “Character” class.
It contains various method for testing and converting the data that is of character type.
The character is a part of “java.lang” package and it does not needed to be imported for using the class.
It contains various static methods for testing the value of the character variables.

Reason for the incorrect answers:

String:

The class is used to represent character of strings.

Hence, the option “A” is wrong.

Char:

“char” is considered as the data type but not the class.

Hence, the option “B” is wrong.

StringBuilder:

The class is used to create a changeable strings and it is similar to String objects.

Hence, the option “D” is wrong.

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Subscribe now to access step-by-step solutions to millions of textbook problems written by subject matter experts!

Answer 5

Textbook Question

Answer 6

Textbook Question

Answer 7

Expert Solution & Answer

Program Description Answer

Methods of the class:

The methods “isDigit”, “isLetter”and “isLetterOrDigit” are some of the members of the class “Character”.

Hence, the correct answer is option “C”.

Explanation of Solution

Character class:

A wrapper class that is used for the char data type is called as “Character” class.
It contains various method for testing and converting the data that is of character type.
The character is a part of “java.lang” package and it does not needed to be imported for using the class.
It contains various static methods for testing the value of the character variables.

Reason for the incorrect answers:

String:

The class is used to represent character of strings.

Hence, the option “A” is wrong.

Char:

“char” is considered as the data type but not the class.

Hence, the option “B” is wrong.

StringBuilder:

The class is used to create a changeable strings and it is similar to String objects.

Hence, the option “D” is wrong.

Answer 8

Expert Solution & Answer

Program Description Answer

Methods of the class:

The methods “isDigit”, “isLetter”and “isLetterOrDigit” are some of the members of the class “Character”.

Hence, the correct answer is option “C”.

Explanation of Solution

Character class:

A wrapper class that is used for the char data type is called as “Character” class.
It contains various method for testing and converting the data that is of character type.
The character is a part of “java.lang” package and it does not needed to be imported for using the class.
It contains various static methods for testing the value of the character variables.

Reason for the incorrect answers:

String:

The class is used to represent character of strings.

Hence, the option “A” is wrong.

Char:

“char” is considered as the data type but not the class.

Hence, the option “B” is wrong.

StringBuilder:

The class is used to create a changeable strings and it is similar to String objects.

Hence, the option “D” is wrong.

Answer 9

Expert Solution & Answer

Answer 10

Expert Solution & Answer

Answer 11

Program Description Answer

Methods of the class:

The methods “isDigit”, “isLetter”and “isLetterOrDigit” are some of the members of the class “Character”.

Hence, the correct answer is option “C”.

Answer 12

Explanation of Solution

Character class:

A wrapper class that is used for the char data type is called as “Character” class.
It contains various method for testing and converting the data that is of character type.
The character is a part of “java.lang” package and it does not needed to be imported for using the class.
It contains various static methods for testing the value of the character variables.

Reason for the incorrect answers:

String:

The class is used to represent character of strings.

Hence, the option “A” is wrong.

Char:

“char” is considered as the data type but not the class.

Hence, the option “B” is wrong.

StringBuilder:

The class is used to create a changeable strings and it is similar to String objects.

Hence, the option “D” is wrong.