What is an example where the same code should perhaps behave differently?

By
Responsive Centered Red Button

Need Help with this Question or something similar to this? We got you! Just fill out the order form (follow the link below), and your paper will be assigned to an expert to help you ASAP.

Order Form

Introduction
For this project you will implement saving and loading images in a format that supports debugging graphics algorithms by being more human-readable.
When testing applications, creating small images can be helpful. The “RGB File Format” is a simple way to create your own images in plain text files.
See the .txt files below for examples of the RGB file format. Each line of the file is a tab-delimited sequence of pixels in the format (r, g, b) where r, g, and b are integers in the range 0 to 255. Space characters before/after the parentheses and commas are optional (all spaces should be ignored).
Provided Image Files:
3×4.png – 3-by-4 image from P2
3×4.txt – 3×4.png in RGB format
3×4.bad – 3×4.txt missing a comma
6×5.png – 6-by-5 image from P2
6×5.txt – 6×5.png in RGB format
6×5.bad – 6×5.txt missing a parenthesis
Provided Source Files:
Picture.java – for loading images (originally found at https://introcs.cs.princeton.edu/java/stdlib/Picture.java )
RGBException.java – custom exception class
RGBFileFormatTest.java – example JUnit tests
RGBFileFormat.java – stubs for Part A
Convert.java – stubs for Part B
Part A: RGBFileFormat.java
Your first task is to implement the RGBFileFormat class in the UML diagram below. Each of its methods throws a FileNotFoundException when applicable. In addition, the load() method throws RGBException (with a specific error message and location) if the file format is incorrect.
(UML)
RGBFileFormat
+load(path : String) : Picture
+save(path : String, picture : Picture)
load()
This method reads an RGB file and returns a corresponding Picture object. You will need to determine the width and height of the picture based on the file contents. Read the file line by line, construct a Color object for each pixel, and set the corresponding (x, y) of the picture.
WARNING
Your solution may NOT use regular expressions . Files containing the words split or regex will automatically be rejected. You will need to write your own private methods for parsing the file contents manually.
Your code must be able to handle the following error conditions:
If the file is empty, throw an RGBException with the message “empty file”.
If any line is blank, throw an RGBException with the message “blank line”.
If the file has an inconsistent number of columns, throw an RGBException with the message “ragged”.
If a pixel does not begin with ‘(‘ or end with ‘)’, throw an RGBException with the message “parens”.
If a pixel does not have exactly two commas, throw an RGBException with the message “commas”.
If a number does not parse as an integer, throw an RGBException with the message “number”.
If a number is not in the range 0 to 255, throw an RGBException with the message “range”.
When throwing an RGBException, the x and y values should correspond to the location of the corresponding pixel. In the case of empty file, blank line, and ragged, the x value should be 0 and the y value should be the relevant location. In the case of an empty file, y should be 0.
save()
This method writes a Picture object to an RGB file. Each line of the file represents a row of the picture. Pixels on the same line should be separated by tab characters and use the format (r, g, b) with exactly one space after each comma. As shown in 3×4.txt and 6.5.txt, each integer should be 3 characters wide (with leading spaces), so that all pixels are 15 characters wide. Each line of the file should end with a newline character.
Unit Testing
RGBFileFormatTest is provided as a starting point to test your load and save methods. You should create additional .bad files of your own to test the other error conditions. These files and other test code will not be submitted; feel free to make any changes you like.
What unit tests should you write? Consider:
What is the simplest example you can think of where you expect a certain outcome for some part of the code (a method or a small number of methods)?
Write a unit test that asserts your expectation is the result of calling those methods.
What is an example where the same code should perhaps behave differently?
Maybe different “branch” or condition has been satisfied and so the behavior should be different according to the specs?
Maybe it’s an erroneous situation and the expectation is that a certain exception is thrown?
Might there be unexpected interactions between different methods?
Part B: Convert.java
Implement an application that uses your RGBFileFormat class to convert images to/from other formats. This application will be run from the command line as follows:
To convert a png/jpg file to RGB format:
java Convert filename.png filename.txt
To convert an RGB file to png/jpg format:
java Convert filename.txt filename.png
As shown above, the main method must have exactly two arguments: the source filename and the destination filename. If the application is not run with two arguments, main should print the following message to System.err and exit with status code 1:
Usage: java Convert SRC DST
Exactly one of the command-line arguments must end with “.txt”; this argument is the file in RGB format. If neither argument ends with “.txt”, main should print the following message to System.err and exit with status code 1:
One of the images must end with .txt
The other argument must end with either “.jpg” or “.png”; this argument is the image to convert to/from. If any other extension is found, main should print the following message to System.err and exit with status code 1:
Unsupported file format: FILENAME
where FILENAME is the invalid argument.
After validating the command-line arguments, the main method should perform the requested conversion. For example, use RGBFileFormat to load the image and Picture to save the image, or vice versa.
Note
As shown in the provided Convert.java stubs, the main method throws Exception. This means you don’t have to handle FileNotFoundException and RGBException. Your main method should not have any try-catch blocks.

How to create Testimonial Carousel using Bootstrap5

Clients' Reviews about Our Services