How do you check if a variable is a string in Java?

The GetType method is inherited by all types that derive from Object. This means that, in addition to using your own language’s comparison keyword, you can use the GetType method to determine the type of a particular object, as the following example shows.

The Java String contains() method is used to check whether the specific set of characters are part of the given string or not . It returns a boolean value true if the specified characters are substring of a given string and returns false otherwise.

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?).