This example shows how you can use if..else to find out if a number is positive or negative:

The modern switch expression introduced in Java 14 (as a preview in Java 12) and enhanced with pattern matching in later versions brings conciseness, readability, and safety to everyday...

Let's discuss each OOP concept with a real-world example. 1. Object. An Object is a real-time entity having some state and behavior. In Java, an Object is an instance of the class having …

Sep 28, 2015 · Java regex matches a O(1) length prefix pattern in O(N). That is, "(?s)^[aeiou]{3}.*$" checks if a string starts with 3 lowercase letters in O(N) when it should be …

Sep 21, 2021 · In this post, I am going to share with you the 10 most useful ways to use lambda expressions in your code, these examples are simple, short, and clear, which will help you to …

Mar 31, 2025 · Simply put, an expression in Java is a combination of values, variables, operators, and method invocations that are evaluated to produce a single value. In this article, we will …

Dec 30, 2022 · Real-world example: A best real-world example is a man. A man can be the husband of someone, the father of his children, and the manager of his company at the same …

Write a Java program to convert Celsius into Fahrenheit. Write a Java program to print the area and perimeter of a circle. Write a Java program to print the area and perimeter of a rectangle. …

The switch statement is composed of cases that are executed based on the value of the expression. A break statement is necessary to exit a case and prevent the execution of other …

Jul 4, 2014 · Real life example Until here, we did see some small examples of how Lambdas look like in Java and for what they can be useful, now we are going to solve a real life problem by …