Generation of random sequence of characters is often required when you want to display a unique transaction id or as a random password generator which provides a temporary password for…
Enhanced for loop also called advanced for loop is used to iterate over an array or a collection of elements such as list or set. When a collection is iterated…
Method overriding means defining a method with the same name and same arguments in a child class as defined in a super(or parent) class. Remember that both number and type…
Many times we need to check if a string has a sequence of characters and take some action based on the result. Example, if you have a list of student…
Often it is required to show an element on click of a button or a link and hiding it again on click. In simpler words, toggle element display on each…
What is Kaprekar Number? A number whose square when divided into 2 parts and each part is added, the result is equal to the number itself is called Kaprekar number.…
What is overloading Overloading means creating with the same name but different arguments. Arguments may differ in number or types. Either methods or constructors can be overloaded in java.…
What is abstraction in java Abstraction means to display only required details while hiding the unnecessary or implementation information. A simple example of abstraction is any machine such as a…
Converting a string to int is a fundamental programming requirement. Most of the times in our code, we get values in string format while many of those values need to…