Big Java Late Objects
2nd Edition
ISBN: 9781119330455
Author: Horstmann
Publisher: WILEY
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Question
Chapter 20, Problem 2PP
Program Plan Intro
To print letter frequencies
Program plan:
- In a file “FrequencyMap.java”, create a class “FrequencyMap”,
- Declare an array variable.
- Define the constructor to initialize the values.
- Define the method “getFrequency()” to get the frequency of the specified letter.
- Define the method “add()” to add a letter to be counted.
- In a file “FrequencyCounter.java”, import the necessary packages and create a class “FrequencyCounter”,
- Define the method “main()”,
- Create a Scanner object.
- Prompt the user for a file name.
- Get the file location from the user.
- Execute “try” statement,
- Create an object for “FrequencyMap”.
- Set the Boolean value to “done”.
- Execute loop if not done,
- Read the character.
- If “-1”,
-
- Set the Boolean value to true.
- Otherwise, check if there is a letter,
-
- Call the method “add()” to add a letter to be counted.
- Close he file reader.
- Execute a loop,
- Print the frequencies.
- Catch if exception occurs,
- Handle the exception.
- Define the method “main()”,
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Big Java Late Objects
Ch. 20.1 - Prob. 1SCCh. 20.1 - Prob. 2SCCh. 20.2 - Prob. 3SCCh. 20.2 - Prob. 4SCCh. 20.2 - Prob. 5SCCh. 20.3 - Prob. 6SCCh. 20.3 - Prob. 7SCCh. 20.4 - Prob. 8SCCh. 20.4 - Prob. 9SCCh. 20.5 - Prob. 10SC
Ch. 20.5 - Prob. 11SCCh. 20.5 - Prob. 12SCCh. 20.5 - Prob. 13SCCh. 20.5 - Prob. 14SCCh. 20 - Prob. 1RECh. 20 - Prob. 2RECh. 20 - Prob. 3RECh. 20 - Prob. 4RECh. 20 - Prob. 5RECh. 20 - Prob. 6RECh. 20 - Prob. 7RECh. 20 - Prob. 8RECh. 20 - Prob. 9RECh. 20 - Prob. 10RECh. 20 - Prob. 11RECh. 20 - Prob. 12RECh. 20 - Prob. 13RECh. 20 - Prob. 14RECh. 20 - Prob. 15RECh. 20 - Prob. 16RECh. 20 - Prob. 1PECh. 20 - Prob. 2PECh. 20 - Prob. 3PECh. 20 - Prob. 4PECh. 20 - Prob. 5PECh. 20 - Prob. 6PECh. 20 - Prob. 7PECh. 20 - Prob. 8PECh. 20 - Prob. 9PECh. 20 - Prob. 10PECh. 20 - Prob. 1PPCh. 20 - Prob. 2PPCh. 20 - Prob. 3PPCh. 20 - Prob. 4PPCh. 20 - Prob. 5PPCh. 20 - Prob. 6PPCh. 20 - Prob. 7PPCh. 20 - Prob. 8PPCh. 20 - Prob. 9PPCh. 20 - Prob. 10PPCh. 20 - Prob. 11PPCh. 20 - Prob. 12PPCh. 20 - Prob. 13PPCh. 20 - Prob. 14PP
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