Categorie aleasă: IT

One way to invest in you is to learn new things every day. This medical crisis offers good perspectives for doing online courses in order to increase knowledge level for every programmer. Usually, more knowledge means...

Q1: Think about some real use-cases when a blocking queue can be used in practice. Can you give one example of implementation for a blocking queue? Q2: In which situation a CopyOnWriteArrayList is preferred against...

Currently, I am using logrotate on all my VPS servers to automatically manage my logfiles and to avoid keeping them indefinitely. What’s the potential problem by keeping them forever? Quite simple and intuitive...

Q1: In which Java version, text blocks are available as preview feature? Java 10Java 11Java 12Java 13 Q2: What’s the output printed to console if you are using Java 11? public static void main(String[] args) {...

Să spunem că vrei să implementezi un algoritm de planificare automată a unui set de pași, parte a unui workflow, în care fiecare pas poate depinde de unul sau mai mulți pași din acesta. Bineînțeles că algoritmul pe care...

Q1: What’s the output printed to console? public static void main(String[] args) { System.out.println(null instanceof Object); } Q2: Why text files and binary files are separated in new Java NIO API? In theory...

Today, we will continue the series of articles about Java as programming language and we will try to present a case when strange things happens under the hood. As a result, we can end up with different production issues...

Q1: Which of the following class loaders is (are) written in C language to be as fast as possible? Select one or multiple options: System class loaderPlatform class loaderBootstrap class loader Q2: What’s the...

Q1: Enumerate all advantages of immutable classes compared with mutable ones. Q2: What’s printed to console when main method is called? public static void main(String[] args) { Pattern myPattern = Pattern...