An interface “NumberFormatter” Program plan: In a file “NumberFormatter.java”, create an interface “NumberFormatter”, Declare the method “format()”. In a file “DefaultFormatter.java”, create a class “DefaultFormatter” that implements “NumberFormatter” interface, Define the method “format()”, Return the formatted value. In a file “DecimalSeparatorFormatter.java”, create a class “DecimalSeparatorFormatter” that implements “NumberFormatter” interface, Define the method “format()”, Return the formatted value. In a file “AccountingFormatter.java”, create a class “AccountingFormatter” that implements “NumberFormatter” interface, Define the method “format()”, Return the formatted value. In a file “BaseFormatter.java”, create a class “BaseFormatter” that implements “NumberFormatter” interface, Declare the variable. Define the constructor, Initialize the base variable to “10”. Check whether the value is between “2” and “36”, If it is true, assign the value. Define the method “format()”, Return the String representation of value. In a file “NumberFormatterDemo.java”, create a class “NumberFormatterDemo”, Define the method “main()”, Initialize the necessary variables. Create an instance variable for “Numberformatter”. Print the formatted output. Print the expected value. Construct the object for “DecimalSeparatorFormatter”. Print the formatted output. Print the expected output. Construct the object for “AccountingFormatter”. Print the formatted output. Print the expected output. Construct the object for “BaseFormatter” for base “2”. Print the formatted output. Print the expected output. Construct the object for “BaseFormatter” for base “8”. Print the formatted output. Print the expected output. Construct the object for “BaseFormatter” for base “20”. Print the formatted output. Print the expected output.

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Chapter 9, Problem 22PP

Program Plan Intro

An interface “NumberFormatter”

Program plan:

In a file “NumberFormatter.java”, create an interface “NumberFormatter”,

Declare the method “format()”.

In a file “DefaultFormatter.java”, create a class “DefaultFormatter” that implements “NumberFormatter” interface,

Define the method “format()”,

Return the formatted value.

In a file “DecimalSeparatorFormatter.java”, create a class “DecimalSeparatorFormatter” that implements “NumberFormatter” interface,

Define the method “format()”,

Return the formatted value.

In a file “AccountingFormatter.java”, create a class “AccountingFormatter” that implements “NumberFormatter” interface,

Define the method “format()”,

Return the formatted value.

In a file “BaseFormatter.java”, create a class “BaseFormatter” that implements “NumberFormatter” interface,

Declare the variable.

Define the constructor,

Initialize the base variable to “10”.

Check whether the value is between “2” and “36”,

If it is true, assign the value.

Define the method “format()”,

Return the String representation of value.

In a file “NumberFormatterDemo.java”, create a class “NumberFormatterDemo”,

Define the method “main()”,

Initialize the necessary variables.

Create an instance variable for “Numberformatter”.

Print the formatted output.

Print the expected value.

Construct the object for “DecimalSeparatorFormatter”.

Print the formatted output.

Print the expected output.

Construct the object for “AccountingFormatter”.

Print the formatted output.

Print the expected output.

Construct the object for “BaseFormatter” for base “2”.

Print the formatted output.

Print the expected output.

Construct the object for “BaseFormatter” for base “8”.

Print the formatted output.

Print the expected output.

Construct the object for “BaseFormatter” for base “20”.

Print the formatted output.

Print the expected output.

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