What is bash? Bash is the shell or command language interpreter for GNU/ Linux operating systems that processes shell commands. In other words, it’s a shell interpreter that takes commands from user and performs actions with the help of underlying operating system services. Bash currently runs on nearly every version of Unix. What is bash …
What is OAuth: It is a framework to facilitate delegated and controlled access on behalf of user. So basically, it is a protocol that allows a user to grant a given third-party web site or application access to the user’s protected resources, without necessarily revealing their long-term credentials or even their identity. There are different …
Optional was introduced in Java 8 and its primary objective is to prevent NullPointer exceptions in code. Consider it as wrapper/container object which may or may not hold a non-null value. One needs to unwrap/de-containerize it to get the actual content using methods provided by Optional itself. For example – method ‘isPresent‘ invoked on Optional …
What is JavaScript? JavaScript is a cross-platform, object-oriented scripting language used to make interactive webpages that includes complex animations, clickable buttons, popup menus. There are also more advanced server-side versions of JavaScript such as Node.js, which allow you to add more functionality to a website. JavaScript was invented by Brendan Eich in 1995 and became an …
