In Java, a HashMap is a collection that stores key-value pairs. The entrySet() method of the HashMap class returns a set of all key-value mappings contained in the map. Here’s an example of using the entrySet() method to iterate over all entries in a HashMap: In this example, we create a new HashMap called map …
Category: Java
Super keyword in Java Example wpaccuracy
In Java, the super keyword is used to refer to the parent class of a subclass. It can be used to access methods, variables, and constructors of the parent class. Here’s an example: In this example, we have a Dog class that extends the Animal class. The Animal class has a constructor that takes a …
Integer.bitcount() method in Java with example wpaccuracy
In Java, the Integer.bitCount() method is used to count the number of 1-bits in the binary representation of an integer. It returns an integer value representing the number of 1-bits. Here is an example: In this example, we have an integer variable called num with the value of 12345. We call the Integer.bitCount() method with …
Top 20 Java Streams API interview questions? wpaccuracy
Here are 20 common interview questions related to the Java Streams API: These questions cover a range of topics related to the Java Streams API and can help you prepare for a Java interview.
JavaScript Syntax
JavaScript is a programming language that is used to create interactive and dynamic web pages. Here are some key syntax rules to keep in mind when writing JavaScript code: document.getElementById(“myButton”).addEventListener(“click”, function() { document.getElementById(“myDiv”).innerHTML = “Hello, world!”; document.getElementById(“myDiv”).style.backgroundColor = “blue”; });
JavaScript Overview
JavaScript is a popular programming language used to create dynamic web pages and web applications. It was created by Brendan Eich at Netscape in 1995 and is now one of the most widely-used programming languages in the world. JavaScript is a high-level, interpreted language, meaning that it can be run directly in a web browser …