Building on Lab Assignment 9 (TestScores Class Custom Exception), modify your code as follows: Read in an array of test scores from a file. If any of the test scores are invalid (via InvaidTestScore exception), then skip the invalid test score and continue to process your input file until an EOF (end-of-file); write out to a new (valid) data file. You may choose your input data file regarding values. For the File I/O, you should use: InputStream and OutputStream Classes. Only the Java code is needed for this assignment. Basic Example: File inputFile = new File("readTestScores.txt"); File outputFile = new File("writeTestScores.txt"); FilelnputStream fis = new FilelnputStream(inputFile); FileOutputStream fos = new FileOutputStream(outputFile); For Reference (Lab 9 Assignment) 1. TestScores Class Write a class named Testscores. The class constructor should accept an array of test scores as its argument. The class should have a method that returns the average of the test scores. If any test score in the array is negative or greater than 100, the class should throw an IllegalArgumentException. Demonstrate the class in a program. 2. TestScores Class Custom Exception Write an exception class named InvalidTestScore. Modify the Testscores class you wrote in Programming Challenge 1 so that it throws an InvalidTestscore exception if any of the test scores in the array are invalid.
Building on Lab Assignment 9 (TestScores Class Custom Exception), modify your code as follows: Read in an array of test scores from a file. If any of the test scores are invalid (via InvaidTestScore exception), then skip the invalid test score and continue to process your input file until an EOF (end-of-file); write out to a new (valid) data file. You may choose your input data file regarding values. For the File I/O, you should use: InputStream and OutputStream Classes. Only the Java code is needed for this assignment. Basic Example: File inputFile = new File("readTestScores.txt"); File outputFile = new File("writeTestScores.txt"); FilelnputStream fis = new FilelnputStream(inputFile); FileOutputStream fos = new FileOutputStream(outputFile); For Reference (Lab 9 Assignment) 1. TestScores Class Write a class named Testscores. The class constructor should accept an array of test scores as its argument. The class should have a method that returns the average of the test scores. If any test score in the array is negative or greater than 100, the class should throw an IllegalArgumentException. Demonstrate the class in a program. 2. TestScores Class Custom Exception Write an exception class named InvalidTestScore. Modify the Testscores class you wrote in Programming Challenge 1 so that it throws an InvalidTestscore exception if any of the test scores in the array are invalid.
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Transcribed Image Text:Building on Lab Assignment 9 (TestScores Class Custom Exception),
modify your code as follows: Read in an array of test scores from a file.
If any of the test scores are invalid (via InvaidTestScore exception), then
skip the invalid test score and continue to process your input file until an
EOF (end-of-file); write out to a new (valid) data file. You may choose
your input data file regarding values. For the File 1/O, you should use:
InputStream and OutputStream Classes. Only the Java code is needed
for this assignment.
Basic Example:
File inputFile = new File("readTestScores.txt");
File outputFile = new File("writeTestScores.txt");
%3D
%3D
FilelnputStream fis = new FilelnputStream(inputFile);
FileOutputStream fos = new FileOutputStream(outputFile);
For Reference (Lab 9 Assignment)
1. TestScores Class
Write a class named Testscores. The class constructor should accept an array of test scores
as its argument. The class should have a method that returns the average of the test scores.
If any test score in the array is negative or greater than 100, the class should throw an
IllegalArgumentException. Demonstrate the class in a program.
2. TestScores Class Custom Exception
Write an exception class named InvalidTestScore. Modify the Testscores class you wrote
in Programming Challenge 1 so that it throws an InvalidTestscore exception if any of the
test scores in the array are invalid.
SO
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