Big Java, Binder Ready Version: Early Objects
Big Java, Binder Ready Version: Early Objects
6th Edition
ISBN: 9781119056447
Author: Cay S. Horstmann
Publisher: WILEY
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Chapter 8, Problem 1PP
Program Plan Intro

Implementation of class ComboLock

Program plan:

Filename: “ComboLock.java”

  • Import the required packages.
  • Define the “ComboLock” class.
    • Declare the class members.
    • Create a constructor “ComboLock()”.
      • Initialize the class members.
    • Create a method “reset()”.
      • Set the value of the class members.
    • Create a method “turnLeft()”.
      • Set the value of “currentNumber”.
      • If the value of “lockState” is equal to 1,
        • If the value of “currentNumber” is equal to “secret2”.
        • Set the value of “lockState” is equal to 2.
          • Else,
            • Set the value of “validSoFar” as “false”.
    • Create a method “turnRight()”.
      • Set the value of “currentNumber”.
      • . If the value of “lockState” is equal to 0,
        • If the value of “currentNumber” is equal to “secret1”.
          • Set the value of “lockState” is equal to 1
      • . If the value of “lockState” is equal to 2,
        • If the value of “currentNumber” is equal to “secret3”.
          • Set the value of “lockState” is equal to 3
      • Else,
        • Set the value of “validSoFar” as “false”.
    • Create a method “open()”.
      • Return the value of “lockState”.

Filename: “ComboLockDemo.java”

  • Import the required packages.
  • Define the “ComboLockDemo” class
  • Define the main method.
    • Create an object for “Random” class.
    • Set the value of “secret1” as 12.
    • Set the value of “secret2” as 12.
    • Set the value of “secret3” as 12.
    • Create an object for “ComboLockDemo” class.
    • Create an object for “Scanner” class.
    • Assign the value of “opened” and “turningRight”.
    • Iterate a “while” loop.
      • Print the instructions to the user.
      • Scan for the value of “ticks”.
      • If the condition is true,
        • Print the statement and return.
      • If the condition is true,
        • Call the method “turnRight()”.
      • If the condition is false,
        • Call the method “turnLeft()”.
        • Set the values of “turningRight” and “opened”.
      • Print the statement.

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Chapter 8 Solutions

Big Java, Binder Ready Version: Early Objects

Ch. 8.3 - Prob. 11SCCh. 8.3 - Prob. 12SCCh. 8.3 - Suppose we want to enhance the CashRegister class...Ch. 8.3 - Consider an Employee class with properties for tax...Ch. 8.3 - Suppose the setName method in Section 8.3.4 is...Ch. 8.3 - Prob. 16SCCh. 8.4 - Name two static variables of the System class. Ch. 8.4 - Prob. 18SCCh. 8.4 - The following method computes the average of an...Ch. 8.4 - Harry tells you that he has found a great way to...Ch. 8.5 - Prob. 21SCCh. 8.5 - Prob. 22SCCh. 8.5 - Prob. 23SCCh. 8.5 - Consider the task of finding numbers in a string....Ch. 8.6 - Prob. 25SCCh. 8.6 - Is a Java program without import statements...Ch. 8.6 - Suppose your homework assignments are located in...Ch. 8.7 - Provide a JUnit test class with one test case for...Ch. 8.7 - Prob. 29SCCh. 8 - Prob. 1RECh. 8 - Prob. 2RECh. 8 - Your task is to write a program that simulates a...Ch. 8 - Prob. 4RECh. 8 - Your task is to write a program that computes...Ch. 8 - Prob. 6RECh. 8 - Suppose an Invoice object contains descriptions of...Ch. 8 - Suppose a vending machine contains products, and...Ch. 8 - Prob. 9RECh. 8 - Prob. 10RECh. 8 - Classify the methods of the class Scanner that are...Ch. 8 - Prob. 12RECh. 8 - Is the Resistor class in Exercise P8.12 a mutable...Ch. 8 - Which of the following classes are...Ch. 8 - Which of the following classes are...Ch. 8 - Prob. 16RECh. 8 - Prob. 17RECh. 8 - Prob. 18RECh. 8 - Consider the following method that is intended to...Ch. 8 - How can you write a method that swaps two...Ch. 8 - Prob. 21RECh. 8 - Prob. 23RECh. 8 - Look at the methods in the Integer class. Which...Ch. 8 - Prob. 25RECh. 8 - Consider the task of fully justifying a paragraph...Ch. 8 - Prob. 27RECh. 8 - Prob. 28RECh. 8 - Prob. 29RECh. 8 - Prob. 30RECh. 8 - Implement the Coin class described in Section 8.2....Ch. 8 - Modify the giveChange method of the CashRegister...Ch. 8 - Real cash registers can handle both bills and...Ch. 8 - Reimplement the BankAccount class so that it is...Ch. 8 - Reimplement the Day class of Worked Example 2.1 to...Ch. 8 - Write static methods public static double...Ch. 8 - Prob. 7PECh. 8 - Modify the application of How To 7.1 so that it...Ch. 8 - Prob. 9PECh. 8 - Prob. 10PECh. 8 - Prob. 11PECh. 8 - Prob. 12PECh. 8 - Prob. 13PECh. 8 - Prob. 14PECh. 8 - Prob. 15PECh. 8 - Prob. 16PECh. 8 - Prob. 17PECh. 8 - Prob. 18PECh. 8 - Place a BankAccount class in a package whose name...Ch. 8 - Prob. 22PECh. 8 - Prob. 23PECh. 8 - Add a method ArrayList<Double> getStatement() to...Ch. 8 - Prob. 25PECh. 8 - Prob. 26PECh. 8 - Prob. 1PPCh. 8 - Prob. 2PPCh. 8 - Prob. 3PPCh. 8 - Prob. 4PPCh. 8 - Prob. 5PPCh. 8 - For faster sorting of letters, the U.S. Postal...Ch. 8 - Implement a program that prints paychecks for a...Ch. 8 - Prob. 8PPCh. 8 - The Downtown Marketing Association wants to...Ch. 8 - Design a class Cannonball to model a cannonball...Ch. 8 - Continue Exercise P8.10, and draw the trajectory...Ch. 8 - The colored bands on the top-most resistor shown...Ch. 8 - Prob. 13PPCh. 8 - Prob. 14PP
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