CSV-Validation

An example of how to reads a CSV file, validate the input data, and output the data to standard output. It performs validation on fields like id, name, birthday, gender, and phone number based on specific rules. The validated data is output along with error messages for invalid data. The header of the CSV file is excluded from validation.

There are only two classes in this project.
Main.java - The main class that contains the logic for reading the CSV file.
Validation.java - The class that provides validation logic for the fields in a CSV file.

Unit Test: ValidationTest.java

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SAMPLE FILE INPUT: writers.csv

id,name,birthday,gender,phone-number
1,Liam,02/1994/29,male,09011112222
2,Austin,1994/10/10,female,08033334444
3,,1989/01/23,female,0355556666

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CONSOLE OUTPUT:

id,name,birthday,gender,phone-number
1,Liam,Error format,male,09011112222
2,Austin,1994/10/10,female,08033334444
3,Error required,1989/01/23,female,0355556666

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VALIDATION DETAILS:

FIELD	VALIDATION	ERROR MESSAGE	CONDITIONS
id	Mandatory, Numerical	Error Required, Error Format	Mandtory Item. Numerical values only.
name	Mandatory, Length limitation	Error required, Error limit over	Mandatory item. 100 characters only.
birthday	Mandatory, Format	Error required, Error format	Mandatory Item. yyyy/mm/dd or yyyy-mm-dd format only
gender	Format	Error format	Male or Female (uppercase, lowercase, or empty data is allowed.)
phone-number	Mandatory, Format	Error required, Error format	Mandatory item. Format should be 000-0000-0000 or 00-0000-0000 or 000-000-0000 or 0000-00-0000 half-width number format or 00000000000 half-width number format around 10-11 characters.