Learn why missing annotations won’t cause any exceptions at runtime
Has a BSc in Chemical Engineering and MSc in Information Technology. Except for the major change, nothing else has changed, still, a computer geek who is passionate about all aspects of software engineering looks for elegant and possibly new solutions, eager to learn and hopefully help fellow software geeks to do so.
Here's what I've written (so far):
Baeldung on Java
- JVM (15)
- Java (5)
- Java Concurrency (3)
- Testing (1)
- Spring Persistence (1)
- Spring Boot (1)
- Spring (1)
- Java String (1)
- Java Array (1)
- DevOps (1)
- Artificial Intelligence (1)
- Algorithms (1)
Learn a couple of ways to configure the application port in Quarkus
Learn different approaches to find the GC algorithm used by a particular JVM instance
Learn how to take advantage of the new graceful shutdown feature in Spring Boot 2.3
Compare BitSets and boolean in terms of performance in different scenarios
Learn how adaptive sizing works and evaluate the difference between max, used, and committed sizes
Learn how we can use a Java BitSet to represent a vector of bits, gett familiar with the BitSet internals, and take a closer look at its API
Learn how sometimes false sharing might cause counterproductive effects on the performance of multithreaded applications
Learn how the JVM makes sure to collect the unreachable but cyclic object references
Learn how to find the memory address of objects in Java
Learn how to measure Java object sizes with various tools such as JOL, Java Agents, and the jcmd command-line utility
Learn how to configure the thread stack sizes in the HotSpot JVM
Learn what causes Java to throw an ExceptionInInitializerError using a few practical examples
If you always wanted to know how JVM stores array length, you will find the answer here.
Learn how the JVM lays out objects and arrays in the heap
Learn a few ways to discover JVM tuning flags and learn how to work with them
Learn the footprint of a boolean value in the JVM in different circumstances
See how the compiler and runtime use the init and clinit methods for initialization purposes
Learn about relatively new Java optimization: string concatenation with invokedynamic
Learn how to preserve the generic type information at runtime using super type tokens.
Learn about invokedynamic and see how it can help library and language designers to implement many forms of dynamicity.
Compare the newCachedThreadPool() and newFixedThreadPool() implementations and their use-cases
Learn about what happens when a thread pool can’t accept any more tasks and how to control this by applying saturation policies
Learn about Spring’s Open Session In View pattern
Learn to manage transactions programmatically in Spring and why this approach is sometimes better than simply using the declarative Transactional annotation.
Learn about the counting sort and then implement it in Java.
Learn about the K-Means clustering algorithm using a real-world dataset from Last.fm
Find out how to tune the JVM to use memory more efficiently and address 32Gb of heap even in a 32-bit system.
Learn about native memory allocation in the JVM and how to track it.
Learn how to simplify test coverage in JUnit 5 with parameterized tests
Baeldung on Linux
- Processes (1)
Learn about the ps command-line utility to find out how long a particular process is running.
Baeldung on Kotlin
- Kotlin Collections (9)
- Kotlin Strings (8)
- Kotlin Basics (7)
- Kotlin Classes and Objects (6)
- Kotlin-Java Interop (3)
- Kotlin Functions (3)
- Functional Programming (3)
- Kotlin IO (2)
- Kotlin Concurrency (1)
- Kotlin (1)
Learn why we can’t use late-initialized properties and variables for primitive types in Kotlin
Learn the difference between init blocks and constructors in Kotlin along with a peek at the generated bytecode for each case
Learn how to use built-in types such Pair and Triple, collection types and arrays, and finally, data classes, to return multiple values.
Learn a few approaches to copy the contents of an InputStream to a file in Kotlin.
Learn how the @Throws annotation facilitates calling Kotlin methods and functions from Java
Learn two approaches to remove duplicate elements from a collection or array
Learn a couple of ways to copy the contents of a List to another one in Kotlin
Learn a few ways to remove all non-alphanumeric characters from a string in Kotlin
Learn a couple of ways to copy the contents of a Map to another one in Kotlin
Learn about two consequences of lambda function inlining in Kotlin: noinline and crossinline
Learn a handful of ways to replace part of a string with something else in Kotlin
Learn that function parameters are immutable in Kotlin
Learn a few ways to instantiate Kotlin objects with the help of reflection and KClass tokens
Learn the subtle differences between map() and flatMap() in Kotlin
Learn how to create different collections such as Lists, MutableLists, or even Arrays with repeating elements in them
Learn how to retrieve the KClass token in Kotlin
Learn how the @JvmStatic annotation affects the generated JVM bytecode
Learn how to find all subclasses of a particular sealed class in Kotlin
Learn a couple of ways to split Strings into a sequence of elements in Kotlin
Learn how primitive arrays and their corresponding parameterized Array types are different in terms of JVM representation and API
Learn how we can have access to the system environment variables in Kotlin
Learn a few ways to convert integers to their corresponding hexadecimal values
Compare Array and List types in Kotlin
Learn how to convert Kotlin Strings to their corresponding Int values
Learn how to check if a string is empty or blank
Learn a few ways to convert arrays to lists in Kotlin
Learn few different approaches to get the name of the currently executing function
Learn a couple of approaches to convert ByteArrays into hexadecimal strings in Kotlin
Learn how string interpolation in Kotlin works under-the-hood and take a look at possible future optimizations for the current implementation
Learn what lambdas with receivers are and how they result in more simplicity and readability
Learn how Kotlin classes and objects differ at both the language and bytecode levels.
Learn about inheritance rules and the open keyword in Kotlin
Learn how to pass a variable number of arguments to functions in Kotlin
Learn about type aliases in Kotlin and their use cases
Learn how we can initialize mutable lists, maps, and sets with no elements
Learn how we can use companion objects to statically initialize a Kotlin class
Learn what happens when we store a null value into a non-null data type in Kotlin
Learn how Kotlin takes this simple deprecation idea from Java and takes it to a whole new level
Learn how to use inline functions in Kotlin
Learn about the conventions that Kotlin provides for operator overloading