Ali Dehghani | Baeldung

Here's what I've written (so far):

Baeldung on Java

Java (21)
Java Concurrency (3)
Algorithms (2)
Testing (1)
Spring Persistence (1)
Spring Boot (1)
Spring (1)
Programming (1)

Why Missing Annotations Don’t Cause ClassNotFoundException

Filed under Java

Learn why missing annotations won’t cause any exceptions at runtime

Configuring the Server Port on Quarkus Applications

Filed under Programming

Learn a couple of ways to configure the application port in Quarkus

Find the GC Algorithm Used by a JVM Instance

Filed under Java

Learn different approaches to find the GC algorithm used by a particular JVM instance

Web Server Graceful Shutdown in Spring Boot

Filed under Spring Boot

Learn how to take advantage of the new graceful shutdown feature in Spring Boot 2.3

Performance Comparison of boolean[] vs BitSet

Filed under Java

Compare BitSets and boolean[] in terms of performance in different scenarios

Difference in Used, Committed, and Max Heap Memory

Filed under Java

Learn how adaptive sizing works and evaluate the difference between max, used, and committed sizes

A Guide to BitSet in Java

Filed under Java

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

A Guide to False Sharing and @Contended

Filed under Java Concurrency

Learn how sometimes false sharing might cause counterproductive effects on the performance of multithreaded applications

Garbage Collection and Cyclic References in Java

Filed under Java

Learn how the JVM makes sure to collect the unreachable but cyclic object references

Memory Address of Objects in Java

Filed under Java

Learn how to find the memory address of objects in Java

Measuring Object Sizes in the JVM

Filed under Java

Learn how to measure Java object sizes with various tools such as JOL, Java Agents, and the jcmd command-line utility

Configuring Stack Sizes in the JVM

Filed under Java

Learn how to configure the thread stack sizes in the HotSpot JVM

When Does Java Throw the ExceptionInInitializerError?

Filed under Java

Learn what causes Java to throw an ExceptionInInitializerError using a few practical examples

Where Is the Array Length Stored in JVM?

Filed under Java

If you always wanted to know how JVM stores array length, you will find the answer here.

Memory Layout of Objects in Java

Filed under Java

Learn how the JVM lays out objects and arrays in the heap

Exploring JVM Tuning Flags

Filed under Java

Learn a few ways to discover JVM tuning flags and learn how to work with them

boolean and boolean[] Memory Layout in the JVM

Filed under Java

Learn the footprint of a boolean value in the JVM in different circumstances

<init> and <clinit> Methods in the JVM

Filed under Java

See how the compiler and runtime use the init and clinit methods for initialization purposes

String Concatenation with Invoke Dynamic

Filed under Java

Learn about relatively new Java optimization: string concatenation with invokedynamic

Super Type Tokens in Java Generics

Filed under Java

Learn how to preserve the generic type information at runtime using super type tokens.

An Introduction to Invoke Dynamic in the JVM

Filed under Java

Learn about invokedynamic and see how it can help library and language designers to implement many forms of dynamicity.

Executors newCachedThreadPool() vs newFixedThreadPool()

Filed under Java Concurrency

Compare the newCachedThreadPool() and newFixedThreadPool() implementations and their use-cases

Guide to RejectedExecutionHandler

Filed under Java Concurrency

Learn about what happens when a thread pool can’t accept any more tasks and how to control this by applying saturation policies

A Guide to Spring’s Open Session In View

Filed under Spring

Learn about Spring’s Open Session In View pattern

Programmatic Transaction Management in Spring

Filed under Spring Persistence

Learn to manage transactions programmatically in Spring and why this approach is sometimes better than simply using the declarative Transactional annotation.

Counting Sort in Java

Filed under Algorithms, Java

Learn about the counting sort and then implement it in Java.

The K-Means Clustering Algorithm in Java

Filed under Algorithms

Learn about the K-Means clustering algorithm using a real-world dataset from Last.fm

Compressed OOPs in the JVM

Filed under Java

Find out how to tune the JVM to use memory more efficiently and address 32Gb of heap even in a 32-bit system.

Native Memory Tracking in JVM

Filed under Java

Learn about native memory allocation in the JVM and how to track it.

Guide to JUnit 5 Parameterized Tests

Filed under Testing

Learn how to simplify test coverage in JUnit 5 with parameterized tests