How do you assert that an object is an instance of a specific class in AssertJ?

How do you assert that an object is an instance of a specific class in AssertJ?

Answer:

Explanation:

The isInstanceOf() method in AssertJ is used to assert that an object is an instance of a specific class. It checks whether the object is of the specified type.

For example:

import static org.assertj.core.api.Assertions.assertThat;

Object obj = new ArrayList<>();

assertThat(obj).isInstanceOf(List.class);

In this example, the isInstanceOf() method asserts that the object obj is an instance of the List class.

Reference links:

https://www.javaguides.net/p/top-java-libraries.html