How to check String is null in Scala? Last Updated : 26 Mar, 2024 Summarize Comments Improve Suggest changes Share Like Article Like Report In this article, we will learn how to check if a string is null in Scala. In Scala, you can check if a string is null using the following methods: Table of Content 1. Using the == operator:2. Using the eq method (recommended):3. Using Pattern Matching:1. Using the == operator: Scala object Main { def main(args: Array[String]) { val str: String = null if (str == null) { println("String is null") } else { println("String is not null") } } } Output: String is null2. Using the eq method (recommended):The eq method is a null-safe way of comparing objects in Scala. It returns true if both operands are null, or if the operands point to the same object instance. Scala object Main { def main(args: Array[String]) { val str: String = null if (str eq null) { println("String is null") } else { println("String is not null") } } } Output: String is null3. Using Pattern Matching: Scala object Main { def main(args: Array[String]) { val str: String = null str match { case null => println("String is null") case _ => println("String is not null") } } } Output: String is nullIt's generally recommended to use the eq method or pattern matching for checking null references, as they provide a more concise way of handling null values in Scala. Comment More infoAdvertise with us Next Article How to check String is null in Scala? M mdshoaibansari0307 Follow Improve Article Tags : Scala Similar Reads Non-linear Components In electrical circuits, Non-linear Components are electronic devices that need an external power source to operate actively. Non-Linear Components are those that are changed with respect to the voltage and current. Elements that do not follow ohm's law are called Non-linear Components. Non-linear Co 11 min read Spring Boot Tutorial Spring Boot is a Java framework that makes it easier to create and run Java applications. It simplifies the configuration and setup process, allowing developers to focus more on writing code for their applications. This Spring Boot Tutorial is a comprehensive guide that covers both basic and advance 10 min read Class Diagram | Unified Modeling Language (UML) A UML class diagram is a visual tool that represents the structure of a system by showing its classes, attributes, methods, and the relationships between them. It helps everyone involved in a project—like developers and designers—understand how the system is organized and how its components interact 12 min read Backpropagation in Neural Network Back Propagation is also known as "Backward Propagation of Errors" is a method used to train neural network . Its goal is to reduce the difference between the model’s predicted output and the actual output by adjusting the weights and biases in the network.It works iteratively to adjust weights and 9 min read 3-Phase Inverter An inverter is a fundamental electrical device designed primarily for the conversion of direct current into alternating current . This versatile device , also known as a variable frequency drive , plays a vital role in a wide range of applications , including variable frequency drives and high power 13 min read Polymorphism in Java Polymorphism in Java is one of the core concepts in object-oriented programming (OOP) that allows objects to behave differently based on their specific class type. The word polymorphism means having many forms, and it comes from the Greek words poly (many) and morph (forms), this means one entity ca 7 min read What is Vacuum Circuit Breaker? A vacuum circuit breaker is a type of breaker that utilizes a vacuum as the medium to extinguish electrical arcs. Within this circuit breaker, there is a vacuum interrupter that houses the stationary and mobile contacts in a permanently sealed enclosure. When the contacts are separated in a high vac 13 min read CTE in SQL In SQL, a Common Table Expression (CTE) is an essential tool for simplifying complex queries and making them more readable. By defining temporary result sets that can be referenced multiple times, a CTE in SQL allows developers to break down complicated logic into manageable parts. CTEs help with hi 6 min read Spring Boot Interview Questions and Answers Spring Boot is a Java-based framework used to develop stand-alone, production-ready applications with minimal configuration. Introduced by Pivotal in 2014, it simplifies the development of Spring applications by offering embedded servers, auto-configuration, and fast startup. Many top companies, inc 15+ min read Python Variables In Python, variables are used to store data that can be referenced and manipulated during program execution. A variable is essentially a name that is assigned to a value. Unlike many other programming languages, Python variables do not require explicit declaration of type. The type of the variable i 6 min read Like