How do you check if an object is a string Java?

You can check object type in Java by using the instanceof keyword . Determining object type is important if you’re processing a collection such as an array that contains more than one type of object. For example, you might have an array with string and integer representations of numbers.

Object Data Type: These are also referred to as Non-primitive or Reference Data Type . They are so-called because they refer to any particular objects. Unlike the primitive data types, the non-primitive ones are created by the users in Java. Examples include arrays, strings, classes, interfaces etc.

The Java instanceof keyword is used to check if an object is a certain type. It returns true or false. For example, we can check if a variable is a type of String; we can test classes to see if they are certain types (e.g., is a Birch a Tree or a BoysName?).