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 · The instanceof operator works on the principle of the is-a relationship. The concept of an is-a relationship is based on class inheritance or interface implementation.

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 …

Nov 8, 2024 · 6. Best Practices for Using the Java “instanceof” Operator Here are some best practices for using the instanceof operator in Java code: We can use the “ instanceof ” operator to check if an …

dog instanceof Domestic // true - Dog implements Domestic dog instanceof Animal // true - Dog extends Animal dog instanceof Dog // true - Dog is Dog dog instanceof Object // true - Object is the parent …

The instanceof Operator Previous Miscellaneous Operators Next JavaScript instanceof The instanceof operator returns true if an object is an instance of a specified object:

Sep 26, 2025 · Please note that arr also belongs to the Object class. That’s because Array prototypically inherits from Object. Normally, instanceof examines the prototype chain for the check. We can also …