this is a repo for all laboratory works I coded on Java as a part of my education process at LPNU IoT 1st course.
create a console program that operates with objects of the Helicopter class, which contains: 5 private fields; 2 protected fields; static int field; getters and setters; constructor with 4 parameters and constructor with all parameters (use this() to avoid code copypasting). override toString() method. add resetValues() method which changes values of all fields. add printStatic() method which returns the value of the static field. in main() method create 3 objects of the class, print them, print the static field, and add a do-while cycle in which 4 empty objects are created and saved to an array; them print them as well.
draw a UML diagram using draw.io for ConstructionGoods class. use all the main principles of OOP. add an extra ConstructionGoodsManager class which implements sort- and find- methods, e.g. sortByWeight() and sortByWidth(), findCheaperThan() etc. sorting may be ascending and descending.
create a maven project. code all the construction goods subclasses in accordance with the UML diagram created as a part of lab 2. use unit testing to call sorting methods (currently empty). edit the code in accordance with Google style code convention.
implement sorting methods using comparators made as: a static inner class; an inner class; an anonymous inner class; lambda expression. edit the code with PMD, SpotBugs, and Checkstyle plugins, and in accordance with Google style code convention.
implement writing information on objects to a CSV file. you should use a new Writer class with writeToFile() method. use try-with-resources. also add getHeaders() and toCSV() methods to all your classes. call these methods from tests. edit the code with PMD, SpotBugs, and Checkstyle plugins, and in accordance with Google style code convention.
create a maven project. write a program that prints the sum of all positive numbers from a text. use a regular expression to find matching numbers. a user must be able to enter the text from the console. code should be tested with junit.
create a REST service for one of the classes created in lab 3 with CRUD operations (Get/Post/Put/Delete) implementation. GET with id in URL-request should return specific object with this id; GET without any path variable should return all the objects. expand the class with id field. edit the code with PMD, SpotBugs, and Checkstyle plugins, and in accordance with Google style code convention.
implement saving the object of one of the lab 3 classes in the table of a database using Spring Boot and Spring Data. re-write CRUD operations methods so that saving and reading the data is done using the database. add Controller, Repository, and Service classes. configure the database connection via application.properties file. edit the code with PMD, SpotBugs, and Checkstyle plugins, and in accordance with Google style code convention.
add 2 additional classes for your application. ManyToMany relationship should be established with the first class and ManyToOne should be established with the second class. add Controllers, Repositories, and Services for these classes. test REST-methods with Postman. edit the code with PMD, SpotBugs, and Checkstyle plugins, and in accordance with Google style code convention.