
Big Java Late Objects
2nd Edition
ISBN: 9781119330455
Author: Horstmann
Publisher: WILEY
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Question
Chapter 8, Problem 14PP
Program Plan Intro
Program plan:
LargestCountry.java:
- Define a class named “LargestCountry”.
- Define a function named “readCountry” with type “Country”.
- Using the “Print” statement, prompt the user to enter the country name.
- Using the scanner class, create an object “in” for reading the input values.
- Using “next()” method gets the next string and store it into the variable “name”.
- Using the “if” conditional statement, check whether the value of “name” is not equal to “quit”.
- If the condition is true, then prompt the user to enter the country population.
- Using the “nextInt()” method gets the next integer and store it into the variable “population”.
- Using the “Print” statement, prompt the user to enter the country area.
- Using the “nextDouble()” method gets the next double and store into the variable “area”.
- Return a country “name”, “population”, and “area”.
- Return “null”
- Define a main function.
- Create an object named “largestArea” of class country.
- Create an object named “largestPopulation” of class country.
- Create an object named “largestDensity” of class country.
- Call the function “readCountry” and store the result into the object “b”.
- Execute “While” block and check whether the value of “b” is not equal to “null”.
- Using the “if” conditional statement, call the function “largerArea” and find the largest area.
- If the condition is true, then store the largest area into the variable “largestArea”.
-
- Using the “if” conditional statement, call the function “largerPopulation” and find the largest population.
- If the condition is true, then store the largest population into the variable “largestPopulation”.
- Using the “if” conditional statement, call the function “largerDensity” and find the largest density.
- If the condition is true, then store the largest density into the variable “largestDensity”.
- Call the function “readCountry” and store the result into the object “b”.
- Using the “if” conditional statement, call the function “largerPopulation” and find the largest population.
- Using the “if” conditional statement, call the function “largerArea” and find the largest area.
- Using the “Print” statement, call the function “largestArea” and display the largest area.
- Using the “Print” statement, call the function “largestPopulation” and display the largest population.
- Using the “Print” statement, call the function “largestDensity” and display the largest density.
- Define a function named “readCountry” with type “Country”.
Country.java:
- Define a class named “Country” for holding country information.
- Declare three variables “name”, “population”, and “area”.
- Create a constructor with three arguments.
- Assign the value of the variable “name” into the variable “this.name”.
- Assign the value of the variable “population” into the variable “this.population”.
- Assign the value of the variable “area” into the variable “this.area”.
- Define a function named “printCountry” and print the country name, population and area.
- Define a double function named “getPopulationDensity”
- Using the “if” conditional statement, check whether “area” is not equal to “0”.
- If the condition is true, then return population density.
- Else return “0”.
- If the condition is true, then return population density.
- Using the “if” conditional statement, check whether “area” is not equal to “0”.
- Define a boolean function named “largerPopulation” for finding which country has a larger population.
- Return true if “this.population” is greater than “b.population”.
- Define a boolean function named “largerDensity” for finding which country has larger population density.
- Return true if “this.getPopulationDensity” is greater than “b.getPopulationDensity”.
- Define a boolean function named “largerArea” for finding which country has a larger area.
- Return true if “this.area” is greater than “b.area”.
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Chapter 8 Solutions
Big Java Late Objects
Ch. 8.1 - Prob. 1SCCh. 8.1 - Prob. 2SCCh. 8.1 - Prob. 3SCCh. 8.1 - Prob. 4SCCh. 8.2 - Prob. 5SCCh. 8.2 - Prob. 6SCCh. 8.2 - Prob. 7SCCh. 8.2 - Prob. 8SCCh. 8.3 - Prob. 9SCCh. 8.3 - Prob. 10SC
Ch. 8.3 - Prob. 11SCCh. 8.3 - Prob. 12SCCh. 8.3 - Prob. 13SCCh. 8.3 - Prob. 14SCCh. 8.4 - Prob. 15SCCh. 8.4 - Prob. 16SCCh. 8.4 - Prob. 17SCCh. 8.4 - Prob. 18SCCh. 8.5 - Prob. 19SCCh. 8.5 - Prob. 20SCCh. 8.5 - Prob. 21SCCh. 8.5 - Prob. 22SCCh. 8.6 - Prob. 23SCCh. 8.6 - Prob. 24SCCh. 8.6 - Prob. 25SCCh. 8.6 - Prob. 26SCCh. 8.6 - Prob. 27SCCh. 8.7 - Prob. 28SCCh. 8.7 - Prob. 29SCCh. 8.7 - Prob. 30SCCh. 8.8 - Prob. 31SCCh. 8.8 - Prob. 32SCCh. 8.8 - Prob. 33SCCh. 8.8 - Prob. 34SCCh. 8.9 - Prob. 35SCCh. 8.9 - Prob. 36SCCh. 8.9 - Prob. 37SCCh. 8.9 - Prob. 38SCCh. 8.9 - Prob. 39SCCh. 8.10 - Prob. 40SCCh. 8.10 - Prob. 41SCCh. 8.10 - Prob. 42SCCh. 8.10 - Prob. 43SCCh. 8.11 - Prob. 44SCCh. 8.11 - Prob. 45SCCh. 8.11 - Prob. 46SCCh. 8.11 - Prob. 47SCCh. 8.11 - Prob. 48SCCh. 8.12 - Prob. 49SCCh. 8.12 - Prob. 50SCCh. 8.12 - Prob. 51SCCh. 8 - Prob. 1RECh. 8 - Prob. 2RECh. 8 - Prob. 3RECh. 8 - Prob. 4RECh. 8 - Prob. 5RECh. 8 - Prob. 6RECh. 8 - Prob. 7RECh. 8 - Prob. 8RECh. 8 - Prob. 9RECh. 8 - Prob. 10RECh. 8 - Prob. 11RECh. 8 - Prob. 12RECh. 8 - Prob. 13RECh. 8 - Prob. 14RECh. 8 - Prob. 15RECh. 8 - Prob. 16RECh. 8 - Prob. 17RECh. 8 - Prob. 18RECh. 8 - Prob. 19RECh. 8 - Prob. 20RECh. 8 - Prob. 21RECh. 8 - Prob. 22RECh. 8 - Prob. 1PECh. 8 - Prob. 2PECh. 8 - Prob. 3PECh. 8 - Prob. 4PECh. 8 - Prob. 5PECh. 8 - Prob. 6PECh. 8 - Prob. 7PECh. 8 - Prob. 8PECh. 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. 1PPCh. 8 - Prob. 2PPCh. 8 - Prob. 3PPCh. 8 - Prob. 4PPCh. 8 - Prob. 6PPCh. 8 - Prob. 7PPCh. 8 - Prob. 8PPCh. 8 - Prob. 9PPCh. 8 - Prob. 10PPCh. 8 - Prob. 11PPCh. 8 - Prob. 12PPCh. 8 - Prob. 13PPCh. 8 - Prob. 14PPCh. 8 - Prob. 15PPCh. 8 - Prob. 16PPCh. 8 - Prob. 17PPCh. 8 - Prob. 18PPCh. 8 - Prob. 19PPCh. 8 - Prob. 20PPCh. 8 - Prob. 21PPCh. 8 - Prob. 22PP
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