
Big Java Late Objects
2nd Edition
ISBN: 9781119330455
Author: Horstmann
Publisher: WILEY
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Chapter 9, Problem 19PP
Program Plan Intro
Filter that retains all the objects
Program plan:
- In a file “Filter.java”, create an interface “Filter”,
- Declare the method “accept()”.
- Define the method “retainAll()”.
- Initialize the variable.
- Make loop for objects,
- Check the condition,
- Assign the object properties.
- Increment the value by “1”.
- Check the condition,
- Create a loop,
- Assign the properties of objects accepted by filter.
- Create a loop,
- Fill the array that contains other objects, with null value.
- In a file “Measurer.java”, create an interface “Measurer”,
- Declare the method “measure()”,
- In a file “BalanceFilter.java”, create a class “BalanceFilter” that implements “Filter” interface,
- Define the method “accept()”,
- Return the balance greater than “1000”.
- Define the method “accept()”,
- In a file “BalanceMeasurer.java”, create a class “BalanceMeasurer” that implements “Measurer” interface,
- Define the method “measure()”,
- Return the value obtained from the method “getBalance()”.
- Define the method “measure()”,
- In a file “BankAccount.java”, create a class “BankAccount”,
- Declare the variable.
- Define the constructor to create a bank account with “0” balance.
- Define the parameterized constructor to set the specified balance.
- Define the method “deposit()” to update the balance with the deposited amount.
- Define the method “withdraw()” to update the balance with withdrawal amount.
- Define the method “getBalance()” to return the current balance.
- Define the method “addInterest()”,
- Add the interest to the bank balance.
- In a file “Data.java”, create a class “Data”,
- Define the method “average()”,
- Initialize the variable.
- Make the loop for the objects,
- Check the condition,
- Update sum value.
- Increment the value of “number”.
- Check the condition,
- Check whether the value is positive,
- If it is true, return the value obtained by dividing sum by the value “number”.
- Otherwise, return “0”.
- Define the method “average()”,
- In a file “FilterTester.java”, create a class “FilterTester”,
- Define the method “main()”,
- Create an array of objects for “BankAccount” class.
- Call the constructor with “900” as parameter.
- Call the constructor with “3000” as parameter.
- Call the constructor with “300” as parameter.
- Call the constructor with “5000” as parameter.
- Call the constructor with “1000” as parameter.
- Create an object for “BalanceMeasure”.
- Create an object for “BalanceFilter”.
- Print the value returned from “average()”.
- Print the expected average value.
- Call the method “retainAll()”.
- Print the message string.
- Create a loop,
- Check the condition,
- Print the value returned from the method “getBalance()”.
- Check the condition,
- Print the expected values.
- Define the method “main()”,
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Chapter 9 Solutions
Big Java Late Objects
Ch. 9.1 - Prob. 1SCCh. 9.1 - Prob. 2SCCh. 9.1 - Prob. 3SCCh. 9.1 - Prob. 4SCCh. 9.1 - Prob. 5SCCh. 9.2 - Prob. 6SCCh. 9.2 - Prob. 7SCCh. 9.2 - Prob. 8SCCh. 9.2 - Prob. 9SCCh. 9.2 - Prob. 10SC
Ch. 9.3 - Prob. 11SCCh. 9.3 - Prob. 12SCCh. 9.3 - Prob. 13SCCh. 9.3 - Prob. 14SCCh. 9.3 - Prob. 15SCCh. 9.4 - Prob. 16SCCh. 9.4 - Prob. 17SCCh. 9.4 - Prob. 18SCCh. 9.4 - Prob. 19SCCh. 9.4 - Prob. 20SCCh. 9.5 - Prob. 21SCCh. 9.5 - Prob. 22SCCh. 9.5 - Prob. 23SCCh. 9.5 - Prob. 24SCCh. 9.5 - Prob. 25SCCh. 9.6 - Prob. 26SCCh. 9.6 - Prob. 27SCCh. 9.6 - Prob. 28SCCh. 9.6 - Prob. 29SCCh. 9.6 - Prob. 30SCCh. 9.6 - Prob. 31SCCh. 9 - Prob. 1RECh. 9 - Prob. 2RECh. 9 - Prob. 3RECh. 9 - Prob. 4RECh. 9 - Prob. 5RECh. 9 - Prob. 6RECh. 9 - Prob. 7RECh. 9 - Prob. 8RECh. 9 - Prob. 9RECh. 9 - Prob. 10RECh. 9 - Prob. 11RECh. 9 - Prob. 12RECh. 9 - Prob. 13RECh. 9 - Prob. 14RECh. 9 - Prob. 15RECh. 9 - Prob. 16RECh. 9 - Prob. 1PECh. 9 - Prob. 2PECh. 9 - Prob. 3PECh. 9 - Prob. 4PECh. 9 - Prob. 7PECh. 9 - Prob. 8PECh. 9 - Prob. 9PECh. 9 - Prob. 10PECh. 9 - Prob. 11PECh. 9 - Prob. 12PECh. 9 - Prob. 13PECh. 9 - Prob. 14PECh. 9 - Prob. 15PECh. 9 - Prob. 16PECh. 9 - Prob. 18PECh. 9 - Prob. 19PECh. 9 - Prob. 20PECh. 9 - Prob. 21PECh. 9 - Prob. 22PECh. 9 - Prob. 23PECh. 9 - Prob. 1PPCh. 9 - Prob. 2PPCh. 9 - Prob. 3PPCh. 9 - Prob. 4PPCh. 9 - Prob. 5PPCh. 9 - Prob. 6PPCh. 9 - Prob. 7PPCh. 9 - Prob. 8PPCh. 9 - Prob. 9PPCh. 9 - Prob. 10PPCh. 9 - Prob. 11PPCh. 9 - Prob. 12PPCh. 9 - Prob. 13PPCh. 9 - Prob. 14PPCh. 9 - Prob. 15PPCh. 9 - Prob. 16PPCh. 9 - Prob. 17PPCh. 9 - Prob. 18PPCh. 9 - Prob. 19PPCh. 9 - Prob. 20PPCh. 9 - Prob. 21PPCh. 9 - Prob. 22PPCh. 9 - Prob. 23PP
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