Java Object getClass() Method

What is Java Object getClass() Method?

Java uses a method called getClass() provided by the class Object to get the class of any object used.

Method Header

public final Class<?> getClass()

The method does not take any parameter and is called upon the object whose class needs to be fetched.

Return Type

This method returns the class of the “object”.

Example

public class DriverClass {

	public static void main(String[] args) {
 
		Object myObject = 25;
		Class myObjectClass = myObject.getClass();
		System.out.println("Class of \"" + myObject + "\" = " + myObjectClass.getName());
		
		myObject = Float.NaN;
		myObjectClass = myObject.getClass();
		System.out.println("Class of \"" + myObject + "\" = " + myObjectClass.getName());

		myObject = Short.MIN_VALUE;
		myObjectClass = myObject.getClass();
		System.out.println("Class of \"" + myObject + "\" = " + myObjectClass.getName());
					
		myObject = 37.99999999000099990;
		myObjectClass = myObject.getClass();
		System.out.println("Class of \"" + myObject + "\" = " + myObjectClass.getName());
			
		myObject = Long.MAX_VALUE;
		myObjectClass = myObject.getClass();
		System.out.println("Class of \"" + myObject + "\" = " + myObjectClass.getName());
		
		myObject = "This is a String.";
		myObjectClass = myObject.getClass();
		System.out.println("Class of \"" + myObject + "\" = " + myObjectClass.getName());
	}
}

Output

Conclusion

That’s how simply you can use the getClass() method of an Object class in Java. As a next learning step, define a customized class and call this method for custom objects to test. This post will always welcome you in case of any revisions or blockers. Till then, keep learning and keep growing!