java.io.InputStream represents a stream of bytes. Often when reading binary files or from a network, data is returned in an input stream format and we need to read that data…
Hoisting is a javascript concept and is defined as the process of moving variable and function declarations to the top of the file(or current scope of execution). Hoisting is done…
Sum of array elements means the sum of all the elements(or digits) in the array. Array elements can be integers(int) or decimal numbers(float or double). To know about java arrays…
What is a perfect number? A positive integer whose sum of all factors(including 1 and excluding the number) is equal to the number itself is a perfect number. Factors of…
What are factors of a number? Factors of a number are integers that completely divide the number. Complete division means that the remainder of division is zero. Factors of a…
What is JSON? JSON stands for JavaScript Object Notation and has become the most popular format for transfer and storage of data since due to its light weight nature. Data…
Many times it happens that a file already exists with some contents and you need to add(or append) some text to it. Fortunately java provides many methods using which text…
What is a prime number? A prime number is a number that is completely divisible by only 1 and itself. By completely divisible means that when divided by a number,…
Cloning an object means creating its exact copy. Cloned object would have the same properties and methods as the source object. There are different ways of creating a clone of…