What are AtomicInteger and AtomicLong in Java? How it works? compareAndSet() Example Tutorial

Concurrency is a fundamental aspect of modern software development, and Java provides a variety of tools and classes to help developers manage shared resources and coordinate the behavior of multiple threads. Among these tools one is atomic variables, which ensure that certain operations on shared data are performed atomically, I mean in one shot, without the need for explicit synchronization. In the past I talked about difference between atomic, synchronized, and volatile in Java and In this article, we'll explore atomic variables in Java, with a focus on AtomicInteger and AtomicLong, and explain how they work and how to use them effectively in Java. 

Is "Java Concurrency in Practice" still Valid in the Era of Java 23?

Hello guys, one of my reader Shobhit asked this question on my blog post about 12 must-reads advanced Java books for intermediate programmers - part 1. I really like the question and thought that many Java programmers might have the same doubt whenever someone recommends them to read Java Concurrency in Practice. When this book came first in 2006, Java world was still not sure of about new concurrency changes made in Java 1.5, I think the first big attempt to improve Java's built-in support for multi-threading and concurrency. 

Top 8 Courses to learn Reactive Spring Boot and WebFlux in 2025 - Best of Lot

Hello Java programmers, if you want to learn Reactive Programming with Spring Boot and WebFlux and are looking for some online courses to start with, you have come to the right place. Earlier, I have shared the best Spring Courses and best Spring Boot courses, and today, I will share the best online course to learn Reactive Programming with Spring Boot and Web Flux. In recent times, Reactive programming has become very popular. It is a programming paradigm that focuses on an asynchronous, event-driven, non-blocking approach for processing data which paves for writing a next-generation scalable web application in Java.  This means a thorough knowledge of reactive programming is a must for creating scalable web applications, and that's why Java developers need to learn reactive programming. 

Top 10 Coursera Courses and Certifications to Learn Web Development in 2025 - Best of Lot

Hello guys, If someone asked me 10 years ago about how to learn web development and get a job I would more likely say that you have to go to college and get your Bachelor’s degree and then try to get a job or internship. In short, it was only possible to become a web developer by spending years on education and thousands of dollars, now the internet has changed the game nowadays. These days many online platforms like Coursera, Udemy, Pluralsight, CodeCademy, and Educative appeared to the world allowing people to take online training courses in almost any industry and web development is one of them. 

Top 8 Courses to learn Microsoft Azure Cloud in 2025 - Best of Lot

Hello guys, if you want to learn about the Microsoft Azure Cloud Platform, you have come to the right place. In the past, I have shared the best courses to pass Azure Fundamentals, Azure Administrator, and Azure Architect certifications. Today, I will share the best online course to learn the Azure platform for Beginners. These are top-quality courses from expert trainers and instructors and are picked from Udemy, Coursera, and edX. You can use these courses to learn Microsoft Azure core services and prepare for different Microsoft Azure certifications like AZ-900, AZ-303, and AZ-20 Azure developer associate certification.

Top 7 Object Oriented Programming and Design Courses for Java Programmers in 2025 - Best of Lot

There is no doubt that Object-oriented programming is a pillar of software development and one of the reasons for the massive success of Java. Good knowledge of Object-oriented programming helps you to create better software. It also allows you to communicate your ideas better with your team members and fellow programmers. Despite being such an important technology, it's difficult to find programmers who understand OOP well. Many programmers just think that OOP is nothing more than Abstraction, Inheritance, Encapsulation, and Polymorphism, without genuinely understanding these concepts and mastering them.

Top 10 Online Courses to Learn Python 3 in 2025 - Best of Lot

If you are a Programmer or a Computer Science graduate and thinking of learning Python in 2025, then you have come to the right place. In this article, I am going to share some of the best online courses to learn Python 3 in 2025. Python is one of the most popular programming languages, and it's used in many domains, like Web development, Automation, Data Science, Machine learning, etc. In recent years, Python has also become a default language for Data Science and Machine learning Projects, and that's another reason why many experienced programmers are learning Python in 2025.

Review - Is ByteByteGo System Design Interview Course by Alex Xu Really Worth it in 2025?

Hello guys, if you are preparing for System Design Interview in 2025 then you may have most likely come across names like ByteByteGo, Alex Xu or System Design Interview - An Insider Guide by Alex Xu, and if you are wondering what they are or you know about them but thinking whether ByteByteGo is worth it or not in 2025? then you have come to the right place. Yes, ByteByteGo is indeed worth considering for your System Design Interview preparation. because its created by Alex Xu, an expert with FAANG interview experience, the platform offers in-depth coverage of system design topics. The author's use of diagrams to explain concepts in detail enhances the learning experience and most importantly Alex Xu regularly and new content and update old ones, for example, he has recently added a section for coding interview patterns in ByteByteGo website.

Coursera's Google IT Support Professional Certificate Review - Is it worth it in 2025?

Hello there, if you are looking for a cost-effective and recognized IT training program to start your career in IT support then you have come to the right place. In this article, we'll review Google IT Support Professional Certificate from Coursera which can be used to launch your career in IT support in 2025. This is one of the most popular Coursera certification from Google and also one of the best structured and many beginners have joined this program, more than 1 million (precisely 1, 330, 000) which is a testament of the value this certification provides and with new AI related chapters and enhancement, this Google certification has become even more valuable to kick start your IT support career in 2025. 

6 ways to get the selected text from html drop down list in jQuery?

One of the common task in web development is retrieving the selected text from a drop down list, which is nothing but HTML select element. This allows users to choose one of the options presented, each text is enclosed in option tag. how can we retrieve the selected text using jQuery? Well, there are multiple ways but core is first find the select element than the selected option by using :selected pseudo class selector. 

How to get the selected radio button on click using jQuery? Example

In last couple of articles, you have learned how to get all checked checkbox and how to find the unchecked checkbox using jQuery, let's see another similar example, this time with radio button. Suppose, in form you have two radio buttons to select the gender i.e. male and female. How do you find which radio button was selected when user clicked on them? well, we will use the jQuery selector to find that. In fact, its not much different than what you have used to find the checked checkbox i.e. $("input[type=radio]:checked") will give the selected radio button. In order to find the chosen radio button when user click, you need to bind a click handler. Let's see an example. 

How to enable/disable form elements using jQuery? Examples

In last couple of tutorials you have learned how to get all selected checkbox and radio buttons, and in this tutorial, you will learn how to enable/disable form elements using jQuery. A form element e.g. a textfield, radio buttons and checkbox, all represented using input tag can be enabled or disabled by adding an attribute called "disabled". It's similar to "checked" attribute we have seen for checkbox and radio buttons. If this attribute is not present then element is enable, but if this attribute is present then you can use disabled=true to disable the form element and disabled=false to enable the form elements as shown in our example. 

How to Compare Two Strings Without Case Sensitivity in Java? Example

How to Compare Two Strings Without Case Sensitivity in Java

Java provides several ways to compare strings without taking case sensitivity into account. In this article, we'll explore different methods to perform case-insensitive string comparisons in Java.

Method	Use Case	Efficiency
equalsIgnoreCase()	Checking equality	High
compareToIgnoreCase()	Ordering comparison	High
String.CASE_INSENSITIVE_ORDER	Sorting collections	High
equals() + toUpperCase()	Not recommended	Low

1. Using equalsIgnoreCase()

The equalsIgnoreCase() method

This method is ideal for checking if two strings are equal without considering their case. It returns true if both strings contain the same characters, regardless of their case.

String str1 = "Hello";
String str2 = "hello";
boolean isEqual = str1.equalsIgnoreCase(str2); // Returns true

2. Using compareToIgnoreCase()

The compareToIgnoreCase() method

Use this method when you want to check which string is greater or smaller, or to find out their relative ordering in lexicographical or alphabetical order, without considering case.

String str1 = "Apple";
String str2 = "banana";
int result = str1.compareToIgnoreCase(str2); // Returns a negative value

3. Using String.CASE_INSENSITIVE_ORDER

The String.CASE_INSENSITIVE_ORDER comparator

This comparator is useful for sorting a list of strings in case-insensitive order.

List<String> fruits = Arrays.asList("Apple", "banana", "Cherry");
Collections.sort(fruits, String.CASE_INSENSITIVE_ORDER);
// Result: [Apple, banana, Cherry]

4. Using equals() + toUpperCase()

Combining equals() and toUpperCase()

This is a tricky way to compare two strings in Java in a case-insensitive manner. First, convert both strings to uppercase, then compare them using equals().

String str1 = "Hello";
String str2 = "hello";
boolean isEqual = str1.toUpperCase().equals(str2.toUpperCase()); // Returns true

Note: This method is not recommended as it creates new String objects, which can be inefficient for large-scale comparisons.

Conclusion

When comparing strings without case sensitivity in Java, it's generally best to use the built-in methods like equalsIgnoreCase() for equality checks and compareToIgnoreCase() for ordering comparisons. 

These methods are optimized and provide clear, readable code. For sorting collections of strings, the String.CASE_INSENSITIVE_ORDER comparator is an excellent choice.

Remember, all these methods compare strings in lexicographical order. Choose the method that best fits your specific use case to ensure efficient and accurate string comparisons in your Java applications.

How to convert XML to JSON in Java? Example

Since XML and JSON are two popular data interchange formats, you will often need to convert one into other. For example, many SOAP web services returns XML response and if you are using Java and wants to convert that XML response to JSON, then you can use JSON library from https://json.org. It provides a class called XML.java, which provides static methods to convert an XML text into a JSONObject. It also support JSON to XML conversion, which will learn in second part of the article. In order to use this class, you can dowload JAR files from Maven Central repository, or you can add required dependency in your pom.xml file. 

How to convert JSON String to Java HashMap? Example

Suppose you have a JSON String, may be a web-service response and you want to create a Map out of it, where key should be the fields and value should be values of those fields e.g. if given JSON String is following :

{

"zip": "90210",

"city": "Beverly Hills"

"state": "CA"

"timeZone": "P"

}

then your HashMap should contain 4 mappings where keys are zip, city, state and timeZone, all of String type and corresponding values.