How to obtain a class object in Java?

In Java, there are multiple ways to obtain a Class object.

1. Get the Class object of an object using the getClass() method. For example:

String str = "Hello";
Class<?> strClass = str.getClass();

1. Retrieve the Class object of a class using the class field of the class. For example:

Class<?> stringClass = String.class;

1. For example, use the forName() method of the Class class to obtain a Class object based on the fully qualified name of the class.

Class<?> stringClass = Class.forName("java.lang.String");

It is worth noting that the third method requires providing the fully qualified name of the class and also handling the ClassNotFoundException exception.