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Preparing for Java Interview? My books Grokking the Java Interview and Grokking the Spring Boot Interview can help Download PDF Hello guys, if you are using Microservice architecture and want to learn about different Microservice design patterns and principles to better architect your application then you have come to the right place. Earlier, I have shared the best Java Microservices courses and
Preparing for Java Interview? My books Grokking the Java Interview and Grokking the Spring Boot Interview can help Download a FREE Sample PDF HashMap in Java works on hashing principles. It is a data structure that allows us to store object and retrieve it in constant time O(1) provided we know the key. In hashing, hash functions are used to link keys and values in HashMap. Objects are stored by t
Learn Java, Programming, Spring, Hibernate throw tutorials, examples, and interview questions Hello guys, first of all, I wish you a very Happy New Year 2024. I have been sharing a lot of roadmaps to become a Web developer, DevOps engineer, and recently React.js developer. One of the requests I received from many of my readers was for creating a Java Developer Roadmap. Since Java is my expertise,
Learn Java, Programming, Spring, Hibernate throw tutorials, examples, and interview questions Hello guys, React.js or simply React is one of the best JavaScript libraries for developing front-end or GUI for web applications. It's also one of the essential skills for full-stack Java developers. Backed by Facebook, React JS, also known as just React is has grown by leaps and bounds in recent years a
Learn Java, Programming, Spring, Hibernate throw tutorials, examples, and interview questions Time is changing and so is Java interviews. Gone are the days, when knowing the difference between String and StringBuffer can help you to go through the second round of interview, questions are becoming more advanced and interviewers are asking more deep questions. When I started my career, questions lik
Learn Java, Programming, Spring, Hibernate throw tutorials, examples, and interview questions EnumSet is one of the specialized implementations of the Set interface for an enumeration type, introduced in Java 1.5 along with the enumeration type itself. Programmer often stores Enum into common collection classes e.g. HashSet or ArrayList, mostly because they are unaware of this little gem. Even I w
Learn Java, Programming, Spring, Hibernate throw tutorials, examples, and interview questions Along with lambda expressions, streams, and several minor goodies, Java 8 has also introduced brand new Date and Time API, and in this tutorial, we will learn how to use Java 8 Date Time API with simple how-to-do task examples. Java's handling of Date, Calendar, and Time is long been criticized by the com
Exception handling is an important part of writing robust Java applications. It’s a non-functional requirement for any application, to gracefully handle any erroneous condition like resource not available, invalid input, null input, and so on. Java provides several exception handling features, in built-in the language itself in form of try, catch, and finally keyword. Java programming language al
Learn Java, Programming, Spring, Hibernate throw tutorials, examples, and interview questions Being a Java programmer and Software developer, I have learned a lot from articles titled What Every Programmer Should Know about ....., they tend to give a lot of useful and in-depth information about a particular topic, which otherwise is very hard to discover. In my quest for learning, I have come acro
Hello guys, if you want to learn Java and looking for the best books to learn Java then you have come to the right place. In the past, I have shared best Java courses, websites, and even a complete Java Developer RoadMap and in this article, I am going to share best books you can read to learn Java programming in depth. These top Java programming books are some of the good books to learn Java and
String in Java is a very special class and the most frequently used class as well. There are lot many more things to learn about String in Java than any other class, and having a good knowledge of different String functionalities makes you use it properly. Given the heavy use of Java String in almost any kind of project, it becomes even more important to know subtle detail about String. Though I h
JDBC Best Practices are some coding practices that Java programmers should follow while writing JDBC code. As discussed in how to connect to the Oracle database from Java, JDBC API is used to connect and interact with a Database management System. We have touched on some of the JDBC best practices in our last article 4 JDBC Performance tips, On which we have discussed simple tips to improve the p
Hello guys, if you are preparing for System Design Interview or just want to improve your Software design skills and looking for best free resources like tutorials and free online courses then you have come to the right place. In the past, I have shared best System design courses, books, websites, and popular System design questions but a lot of you asked for free resources and that's why I am goi
On the basis of how we specify the JVM option it can be divided into two parts, JVM Options which starts with –X and those which starts with -XX: 1) JVM Options that begin with -X are non-standard (they are not guaranteed to be supported on all JVM implementations) and are subject to change without notice in subsequent releases of the JDK. I was thinking about writing a post on JVM options when
I know how frustrating is to see "Exception in thread "main" java.lang.NoClassDefFoundError" while running your Java application. This is one of the dreaded problem in Java which is also a manifestation of NoClassDefFoundError in Java. I have seen it a couple of times and spent quite a lot of time initially to figure out what is wrong, which class is missing etc. The first mistake I did was mingl
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