Modified implementation of “Data” class Program plan: In a file “Filter.java”, create a package, Create an interface “Filter”, Declare a method “accept()”. In a file “Measurer.java”, create a package, Create an interface “Measurer”, Declare a method “measure()”. In a file “BalanceFilter.java”, Create a package. Create a class “BalanceFilter”, Define a method “accept()” to return the balance no less than $1000. In a file “BalanceMeasurer.java”, Create a package. Create a class “BalanceMeasurer”, Define a method “measure()” to return the bank balance. In a file “BankAccount.java”, Create a package. Create a class “BankAccount”, Declare the variable. Define the constructor to create a bank account with “0” balance. Define the parameterized constructor to update the balance with the specified amount. Define a method “deposit()” to update with the credited amount. Define a method “withdraw()” to update the balance with withdrawal amount. Define a method “getBalance()” to return the bank balance. Define a method “addInterst()”to update the balance with interest. In a file “Data.java”, create a package and then a class “Data”, Define a method “average()”, Initialize the “sum”, and “num” variables to “0”. Create “for” loop to iterate objects, Update “sum” value. Increment “num” value. Check whether the value is positive, Return the value, which is calculated from dividing “sum” by “num”.. Otherwise, Return “0”. In a file “FilterDemo.java”, create a package and then a class “FilterDemo”, Define the method “main()”, Create an array of “BankAccount” objects. Set the 0th array object value. Set the first array object value. Set the second array object value. Set the third array object value. Set the fourth array object value. Create an object for “BalanceMeasurer” class. Create an object for “BalanceFilter” class. Print the value returned from the method “average()”. Print the expected value.

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Chapter 9, Problem 16PP

Program Plan Intro

Modified implementation of “Data” class

Program plan:

In a file “Filter.java”, create a package,

Create an interface “Filter”,

Declare a method “accept()”.

In a file “Measurer.java”, create a package,

Create an interface “Measurer”,

Declare a method “measure()”.

In a file “BalanceFilter.java”,

Create a package.

Create a class “BalanceFilter”,

Define a method “accept()” to return the balance no less than $1000.

In a file “BalanceMeasurer.java”,

Create a package.

Create a class “BalanceMeasurer”,

Define a method “measure()” to return the bank balance.

In a file “BankAccount.java”,

Create a package.

Create a class “BankAccount”,

Declare the variable.

Define the constructor to create a bank account with “0” balance.

Define the parameterized constructor to update the balance with the specified amount.

Define a method “deposit()” to update with the credited amount.

Define a method “withdraw()” to update the balance with withdrawal amount.

Define a method “getBalance()” to return the bank balance.

Define a method “addInterst()”to update the balance with interest.

In a file “Data.java”, create a package and then a class “Data”,

Define a method “average()”,

Initialize the “sum”, and “num” variables to “0”.

Create “for” loop to iterate objects,

Update “sum” value.

Increment “num” value.

Check whether the value is positive,

Return the value, which is calculated from dividing “sum” by “num”..

Otherwise,

Return “0”.

In a file “FilterDemo.java”, create a package and then a class “FilterDemo”,

Define the method “main()”,

Create an array of “BankAccount” objects.

Set the 0th array object value.

Set the first array object value.

Set the second array object value.

Set the third array object value.

Set the fourth array object value.

Create an object for “BalanceMeasurer” class.

Create an object for “BalanceFilter” class.

Print the value returned from the method “average()”.

Print the expected value.

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