Jul 23, 2025 · In Java, instanceof is a keyword used for checking if a reference variable contains a given type of object reference or not. Following is a Java program to show different behaviors of instanceof.

May 11, 2024 · It’s also known as a type comparison operator because it compares the instance with the type. Before casting an unknown object, the instanceof check should always be used.

The instanceof operator in Java is used to check whether an object is an instance of a particular class or not. In this tutorial, we will learn about the instanceof operator in Java with the help of examples.

Definition and Usage The instanceof keyword checks whether an object is an instance of a specific class or an interface. The instanceof keyword compares the instance with type. The return value is either …

instanceof is used to check if an object is an instance of a class, an instance of a subclass, or an instance of a class that implements a particular interface.

Learn how to use the `instanceof` keyword in Java for type checking and casting. This guide covers syntax, examples, and best practices for effective usage.

Feb 28, 2026 · This chapter explains the instanceof operator in Java, which is used to check an object's type at runtime, compare it with a class, subclass, or interface, and determine the relationship …

Jan 16, 2026 · In Java, the `instanceof` operator, often referred to as the is operator, is a powerful tool that allows developers to check if an object is an instance of a particular class, an interface, or a …

Java instanceof keyword is an operator which is used only for object reference variables. This operator checks whether a Java object is of a particular type (class type or interface type).

Jan 3, 2023 · Java instanceof operator (also called type comparison operator) is used to test whether the specified object is an instance of the specified type (class, subclass, or interface).