Variables: A memory space, which contains a data value, is called as variable. • The variable must be declared before it is used in the program, because Java programming language statically typed. Syntax for variable declaration: Datatype variableName1, variableName2; Here, • The Datatype can be “int”, “double”, “float”, “long”, “Boolean”, and “String”. • The “variableName1” and “variableName2” is the name of the variable. ○ Variable name should begin with a character, underscore (_) or dollar sign ($) and they should not start with a number. • “N” number of variables can be defined in a single declaration statement.

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Answer 1

Question

Chapter 2.1, Problem 1STQ

Program Plan Intro

Variables:

A memory space, which contains a data value, is called as variable.

• The variable must be declared before it is used in the program, because Java programming language statically typed.

Syntax for variable declaration:

Datatype variableName1, variableName2;

Here,

• The Datatype can be “int”, “double”, “float”, “long”, “Boolean”, and “String”.

• The “variableName1” and “variableName2” is the name of the variable.

○ Variable name should begin with a character, underscore (_) or dollar sign ($) and they should not start with a number.

• “N” number of variables can be defined in a single declaration statement.

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Answer 2

Question

Chapter 2.1, Problem 1STQ

Program Plan Intro

Variables:

A memory space, which contains a data value, is called as variable.

• The variable must be declared before it is used in the program, because Java programming language statically typed.

Syntax for variable declaration:

Datatype variableName1, variableName2;

Here,

• The Datatype can be “int”, “double”, “float”, “long”, “Boolean”, and “String”.

• The “variableName1” and “variableName2” is the name of the variable.

○ Variable name should begin with a character, underscore (_) or dollar sign ($) and they should not start with a number.

• “N” number of variables can be defined in a single declaration statement.

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Answer 3

Question

Chapter 2.1, Problem 1STQ

Program Plan Intro

Variables:

A memory space, which contains a data value, is called as variable.

• The variable must be declared before it is used in the program, because Java programming language statically typed.

Syntax for variable declaration:

Datatype variableName1, variableName2;

Here,

• The Datatype can be “int”, “double”, “float”, “long”, “Boolean”, and “String”.

• The “variableName1” and “variableName2” is the name of the variable.

○ Variable name should begin with a character, underscore (_) or dollar sign ($) and they should not start with a number.

• “N” number of variables can be defined in a single declaration statement.

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Answer 4

Question

Chapter 2.1, Problem 1STQ

Program Plan Intro

Variables:

A memory space, which contains a data value, is called as variable.

• The variable must be declared before it is used in the program, because Java programming language statically typed.

Syntax for variable declaration:

Datatype variableName1, variableName2;

Here,

• The Datatype can be “int”, “double”, “float”, “long”, “Boolean”, and “String”.

• The “variableName1” and “variableName2” is the name of the variable.

○ Variable name should begin with a character, underscore (_) or dollar sign ($) and they should not start with a number.

• “N” number of variables can be defined in a single declaration statement.

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Answer 5

Chapter 2.1, Problem 1STQ

Program Plan Intro

Variables:

A memory space, which contains a data value, is called as variable.

• The variable must be declared before it is used in the program, because Java programming language statically typed.

Syntax for variable declaration:

Datatype variableName1, variableName2;

Here,

• The Datatype can be “int”, “double”, “float”, “long”, “Boolean”, and “String”.

• The “variableName1” and “variableName2” is the name of the variable.

○ Variable name should begin with a character, underscore (_) or dollar sign ($) and they should not start with a number.

• “N” number of variables can be defined in a single declaration statement.

Answer 6

Chapter 2.1, Problem 1STQ

Program Plan Intro

Variables:

A memory space, which contains a data value, is called as variable.

• The variable must be declared before it is used in the program, because Java programming language statically typed.

Syntax for variable declaration:

Datatype variableName1, variableName2;

Here,

• The Datatype can be “int”, “double”, “float”, “long”, “Boolean”, and “String”.

• The “variableName1” and “variableName2” is the name of the variable.

○ Variable name should begin with a character, underscore (_) or dollar sign ($) and they should not start with a number.

• “N” number of variables can be defined in a single declaration statement.

Answer 7

Chapter 2.1, Problem 1STQ

Program Plan Intro

Variables:

A memory space, which contains a data value, is called as variable.

• The variable must be declared before it is used in the program, because Java programming language statically typed.

Syntax for variable declaration:

Datatype variableName1, variableName2;

Here,

• The Datatype can be “int”, “double”, “float”, “long”, “Boolean”, and “String”.

• The “variableName1” and “variableName2” is the name of the variable.

○ Variable name should begin with a character, underscore (_) or dollar sign ($) and they should not start with a number.

• “N” number of variables can be defined in a single declaration statement.

Answer 8

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Answer 9

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Answer 10

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Answer 11

Ch. 2.1 - Prob. 1STQ Ch. 2.1 - Can a Java program have two different variables...Ch. 2.1 - Prob. 3STQ Ch. 2.1 - Give the declaration for two variables of type...Ch. 2.1 - Write the declaration for two variables called...Ch. 2.1 - What is the normal spelling convention for named...Ch. 2.1 - Prob. 7STQ Ch. 2.1 - Prob. 8STQ Ch. 2.1 - Prob. 9STQ Ch. 2.1 - Prob. 10STQ

Solution Summary: The author explains that Java programming language statically typed variables. They must be declared before they are used in a program.

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Chapter 2 Solutions