getClass() : Get Run time class Of Object

public final native Class<?> getClass()

    Returns the run time class of this object.

class A{

}

class B extends A{

}

class GetClassTest{
 public static void main(String args[]){
  A obj1 = new A();
  B obj2 = new B();
  
  System.out.println("Run time class for obj1 is " +obj1.getClass());
  System.out.println("Run time class for obj2 is " +obj2.getClass());
  
  obj1 = obj2;
  System.out.println("Run time class for obj1 is " +obj1.getClass());
 }
}

Output

Run time class for obj1 is class A
Run time class for obj2 is class B
Run time class for obj1 is class B

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