Andrei Ciobanu – net.andreinc

Writing an unified validation mechanism for REST APIs using Spring Boot and JSR-380

By Andrei Ciobanu October 2, 2017Java, Spring3 Comments

JSR-380 defines a metadata model and API for Java Bean validation. It can be used an "architectural-agnostic" way and it is particularly useful when it comes to validating the RESTful…

Simple authentication with Spring Boot and JWT Tokens

By Andrei Ciobanu September 10, 2016Java, Spring6 Comments

In the following article I am going to prove how you can secure a REST API (developed with Spring Boot) with JWT tokens. For simplicity, Spring Security will not be used.

It is assumed the reader is already familiar with JWT.

How to use SeekableByteChannel interface for Random Access to Files (RAF)

By Andrei Ciobanu December 9, 2013Java, NIO1 Comment

RAFs, Random Access Files permit asynchronous (random) access to a file contents. To access a file randomly we open the file, seek a particular position, and then we read or…

Writing a simple file/folder monitor using the Watch Service API

By Andrei Ciobanu December 6, 2013Java, NIO5 Comments

The Watch Service was introduced in Java 7 as a "thread-safe" service responsible for watching objects for changes. The most popular use of this API would be to use it…

Recursive folder walks using NIO.2 API

By Andrei Ciobanu December 6, 2013Java, NIO, UncategorizedNo Comments

FileVisitor Interface The FileVisitor interface allows us to recursively traverse file structures - folders, sub-folders and files. Every method of this interface can return 4 possible results (instances of the…

File Attributes int the NIO.2 API

By Andrei Ciobanu December 5, 2013Java, NIO, Uncategorized1 Comment

Introduction With NIO.2 we can easily determine the attributes of a file by using the java.nio.file.attribute package. Various file systems have different properties associated with files but NIO.2 groups the…

The NIO.2 Path Class

By Andrei Ciobanu December 5, 2013Java, NIONo Comments

The Path class is considered to be the entry point for exploring the NIO.2 API. Basically every I/O operation in NIO.2 will exploit the facilities offered by this class. Path…

HR Schema for MySQL and Maria DB

By Andrei Ciobanu October 5, 2013Data Bases, Maria DB, MySQL, SQL11 Comments

If you are familiar with Oracle's HR schema you may find the following useful. I've written a script that generates a similar sample schema for MySQL and MariaDB. The table…

Getting started with Apache Maven and Eclipse

By Andrei Ciobanu September 9, 2013Eclipse, Java, MavenNo Comments

Apache Maven is a popular build automation tool, for large Java Projects. All major Java IDEs (IntelliJ IDEA, Eclipse and Netbeans) fully support Maven integration, by default or via plugins. In order to…

Adding custom annotations to your java beans

By Andrei Ciobanu September 5, 2013Java3 Comments

Java annotations are syntactic meta-information that can be added to your Java source code. You can annotate classes, methods, variables, method parameters and even packages. The great advantage of Java…

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