Identifiers: Identifier is the name of the element which is used to identify class, method, and variable in a program. Example declaration of variable identifier: data_type identifier-name; Here, “data_type” is to mention the type of the identifier. “identifier-name” is the name of the identifier. Rules of defining identifiers: To declare an identifier, the programmer should follow the below rules: An identifier can use sequence of characters like digit, letters, underscores (_), and dollar signs ($). The identifier must not be a predefined word. The identifier cannot be “true”, “false”, or “null”. An identifier cannot start with digit. It can start with letter, underscore (_), or dollar sign ($). It can any of length and cannot use special characters. Keywords: Keyword is the reserved word by a program. Because, it has special meaning such as abstract, new, private, etc.

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Answer 1

Question

Chapter 2.4, Problem 2.4.1CP

Program Plan Intro

Identifiers:

Identifier is the name of the element which is used to identify class, method, and variable in a program.

Example declaration of variable identifier:

data_type identifier-name;

Here,

“data_type” is to mention the type of the identifier.

“identifier-name” is the name of the identifier.

Rules of defining identifiers:

To declare an identifier, the programmer should follow the below rules:

An identifier can use sequence of characters like digit, letters, underscores (_), and dollar signs ($).

The identifier must not be a predefined word.

The identifier cannot be “true”, “false”, or “null”.

An identifier cannot start with digit. It can start with letter, underscore (_), or dollar sign ($).

It can any of length and cannot use special characters.

Keywords:

Keyword is the reserved word by a program. Because, it has special meaning such as abstract, new, private, etc.

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Answer 2

Question

Chapter 2.4, Problem 2.4.1CP

Program Plan Intro

Identifiers:

Identifier is the name of the element which is used to identify class, method, and variable in a program.

Example declaration of variable identifier:

data_type identifier-name;

Here,

“data_type” is to mention the type of the identifier.

“identifier-name” is the name of the identifier.

Rules of defining identifiers:

To declare an identifier, the programmer should follow the below rules:

An identifier can use sequence of characters like digit, letters, underscores (_), and dollar signs ($).

The identifier must not be a predefined word.

The identifier cannot be “true”, “false”, or “null”.

An identifier cannot start with digit. It can start with letter, underscore (_), or dollar sign ($).

It can any of length and cannot use special characters.

Keywords:

Keyword is the reserved word by a program. Because, it has special meaning such as abstract, new, private, etc.

Expert Solution & Answer

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Answer 3

Question

Chapter 2.4, Problem 2.4.1CP

Program Plan Intro

Identifiers:

Identifier is the name of the element which is used to identify class, method, and variable in a program.

Example declaration of variable identifier:

data_type identifier-name;

Here,

“data_type” is to mention the type of the identifier.

“identifier-name” is the name of the identifier.

Rules of defining identifiers:

To declare an identifier, the programmer should follow the below rules:

An identifier can use sequence of characters like digit, letters, underscores (_), and dollar signs ($).

The identifier must not be a predefined word.

The identifier cannot be “true”, “false”, or “null”.

An identifier cannot start with digit. It can start with letter, underscore (_), or dollar sign ($).

It can any of length and cannot use special characters.

Keywords:

Keyword is the reserved word by a program. Because, it has special meaning such as abstract, new, private, etc.

Expert Solution & Answer

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Answer 4

Question

Chapter 2.4, Problem 2.4.1CP

Program Plan Intro

Identifiers:

Identifier is the name of the element which is used to identify class, method, and variable in a program.

Example declaration of variable identifier:

data_type identifier-name;

Here,

“data_type” is to mention the type of the identifier.

“identifier-name” is the name of the identifier.

Rules of defining identifiers:

To declare an identifier, the programmer should follow the below rules:

An identifier can use sequence of characters like digit, letters, underscores (_), and dollar signs ($).

The identifier must not be a predefined word.

The identifier cannot be “true”, “false”, or “null”.

An identifier cannot start with digit. It can start with letter, underscore (_), or dollar sign ($).

It can any of length and cannot use special characters.

Keywords:

Keyword is the reserved word by a program. Because, it has special meaning such as abstract, new, private, etc.

Expert Solution & Answer

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Answer 5

Chapter 2.4, Problem 2.4.1CP

Program Plan Intro

Identifiers:

Identifier is the name of the element which is used to identify class, method, and variable in a program.

Example declaration of variable identifier:

data_type identifier-name;

Here,

“data_type” is to mention the type of the identifier.

“identifier-name” is the name of the identifier.

Rules of defining identifiers:

To declare an identifier, the programmer should follow the below rules:

An identifier can use sequence of characters like digit, letters, underscores (_), and dollar signs ($).

The identifier must not be a predefined word.

The identifier cannot be “true”, “false”, or “null”.

An identifier cannot start with digit. It can start with letter, underscore (_), or dollar sign ($).

It can any of length and cannot use special characters.

Keywords:

Keyword is the reserved word by a program. Because, it has special meaning such as abstract, new, private, etc.

Answer 6

Chapter 2.4, Problem 2.4.1CP

Program Plan Intro

Identifiers:

Identifier is the name of the element which is used to identify class, method, and variable in a program.

Example declaration of variable identifier:

data_type identifier-name;

Here,

“data_type” is to mention the type of the identifier.

“identifier-name” is the name of the identifier.

Rules of defining identifiers:

To declare an identifier, the programmer should follow the below rules:

An identifier can use sequence of characters like digit, letters, underscores (_), and dollar signs ($).

The identifier must not be a predefined word.

The identifier cannot be “true”, “false”, or “null”.

An identifier cannot start with digit. It can start with letter, underscore (_), or dollar sign ($).

It can any of length and cannot use special characters.

Keywords:

Keyword is the reserved word by a program. Because, it has special meaning such as abstract, new, private, etc.

Answer 7

Chapter 2.4, Problem 2.4.1CP

Program Plan Intro

Identifiers:

Identifier is the name of the element which is used to identify class, method, and variable in a program.

Example declaration of variable identifier:

data_type identifier-name;

Here,

“data_type” is to mention the type of the identifier.

“identifier-name” is the name of the identifier.

Rules of defining identifiers:

To declare an identifier, the programmer should follow the below rules:

An identifier can use sequence of characters like digit, letters, underscores (_), and dollar signs ($).

The identifier must not be a predefined word.

The identifier cannot be “true”, “false”, or “null”.

An identifier cannot start with digit. It can start with letter, underscore (_), or dollar sign ($).

It can any of length and cannot use special characters.

Keywords:

Keyword is the reserved word by a program. Because, it has special meaning such as abstract, new, private, etc.

Answer 8

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Answer 10

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Answer 11

Ch. 2.2 - Identify and fix the errors in the following code:...Ch. 2.3 - How do you write a statement to let the user enter...Ch. 2.3 - Prob. 2.3.2CP Ch. 2.4 - Prob. 2.4.1CP Ch. 2.5 - Identify and fix the errors in the following code:...Ch. 2.6 - Identify and fix the errors in the following code:...Ch. 2.7 - Prob. 2.7.1CP Ch. 2.8 - Prob. 2.8.1CP Ch. 2.8 - Translate the following algorithm into Java code:...Ch. 2.9 - Prob. 2.9.1CP

Solution Summary: The author explains that identifiers are the name of the element which is used to identify class, method, and variable in a program.

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