What is a marker interface An interface which has no methods is called a marker interface in java. In other words, it is an empty interface having no method declarations…
What is a clone A clone is an exact copy of something. Object cloning is required when you want to create a new object with the same values of properties…
What are command line arguments Command line arguments are the values that are supplied to a shell script as input while executing it from the command line. Using command line…
Read user input in shell script Getting user input is important for creating interactive and dynamic shell scripts so that they execute as user wants. For example, a file reader…
Object is a fundamental entity of any java application and every developer creates objects while coding. An object is an instance of a class and there are many different methods…
What is angular routing A web application generally contains several pages. Example, a student management system can have a page for student registration, another page for student data modification, a…
What is ajax AJAX stands for Asynchronous Javascript and XML and is used to fetch or send data from or to a server. AJAX is used for creating fast and…
What is a semaphore Semaphore is used to limit access to a resource to a fixed number of threads. With semaphore you can ensure that a code is executed concurrently…
Meaning of default method A method in an interface having a body or implementation is called a default method. The concept of default methods was introduced in java 8. Till…