A method “length()” Program plan: In a file “LispList.java”, create a class “LispList”, Create an object for “EmptyList”. Declare the method “isEmpty()”. Declare the method “head()”. Declare the method “tail()”. Declare the method “cons()”. Declare the method “length()”. In a file “EmptyList.java”, create a class “EmptyList”, Define the default constructor. Define the “cons()” method to return the object of “NonEmptyList”. Define the method “isEmpty()” to returns true. Define the method “length()” that returns “0”. Define the method “head()” that returns an exception “UnsupportedOperationException”. Define the method “tail()” that returns an exception “UnsupportedOperationException”. Define the method “toString()” that returns empty string. In a file “NonEmptyList.java”, create a class “NonEmptyList”, Declare the object for “Object” and “LispList”. Define the constructor that assigns the object properties. Define the “cons()” method to return the object of “NonEmptyList”. Define the method “isEmpty()” that returns false. Define the method “length()”, Check whether the list is empty, If it is true, returns “0”. Otherwise, return the update length. Define the method “head()” that returns the object properties of “Object”. Define the method “tail()” that returns the object properties of “LispList”. Define the method “toString()” that returns the string representation. In a file “LispListTest.java”, create a class “LispListTest”, Define the method “main()”, Create an object for “EmptyList”. Print the actual and expected output. Create an object for “NonEmptyList”. Print the actual and expected output. Create another object for “NonEmptyList”. Print the actual and expected output. Assign the value returned from the method “cons()”. Print the actual and expected output.

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Chapter 16, Problem 10PP

Program Plan Intro

A method “length()”

Program plan:

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

Create an object for “EmptyList”.

Declare the method “isEmpty()”.

Declare the method “head()”.

Declare the method “tail()”.

Declare the method “cons()”.

Declare the method “length()”.

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

Define the default constructor.

Define the “cons()” method to return the object of “NonEmptyList”.

Define the method “isEmpty()” to returns true.

Define the method “length()” that returns “0”.

Define the method “head()” that returns an exception “UnsupportedOperationException”.

Define the method “tail()” that returns an exception “UnsupportedOperationException”.

Define the method “toString()” that returns empty string.

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

Declare the object for “Object” and “LispList”.

Define the constructor that assigns the object properties.

Define the “cons()” method to return the object of “NonEmptyList”.

Define the method “isEmpty()” that returns false.

Define the method “length()”,

Check whether the list is empty,

If it is true, returns “0”.

Otherwise, return the update length.

Define the method “head()” that returns the object properties of “Object”.

Define the method “tail()” that returns the object properties of “LispList”.

Define the method “toString()” that returns the string representation.

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

Define the method “main()”,

Create an object for “EmptyList”.

Print the actual and expected output.

Create an object for “NonEmptyList”.

Print the actual and expected output.

Create another object for “NonEmptyList”.

Print the actual and expected output.

Assign the value returned from the method “cons()”.

Print the actual and expected output.

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