What is the difference between isAssignableFrom and instanceof in Java?

In Java, the isAssignableFrom() method is a method of the Class class used to determine if one class can be assigned to another. This means that if an object of one class can be used as an object of another class, then the two classes are related. For example, if class B extends class A, then B.isAssignableFrom(A) will return true.

The instanceof keyword is used to determine whether an object is an instance of a specified class, or an instance of a subclass of that class. For example, if an object obj is an instance of class A, then obj instanceof A would return true.

Therefore, isAssignableFrom() is mainly used to determine relationships between classes, while instanceof is mainly used to determine the type of an object.