Java Class asSubclass() Method

The asSubclass() method of java Class casts this Class object to represent a subclass of the class represented by the specified class object. It throws a ClassCastException if the cast is not valid otherwise it returns a reference to this(current) class object.

Syntax

Parameter

U - Type to cast this class object to

clazz - class of the type to cast this class object to.

Returns

This Class object and cast to represent a subclass of the specified class object).

Throws

ClassCastException

Example 1

import java.lang.*;
public class ClassasSubclassExample1  extends SubClass {
   public static void main(String[] args) {
     try {
         ClassasSubclassExample1 class1 = new ClassasSubclassExample1();
         SubClass subclass = new SubClass(); 

         // class ClassasSubclassExample1
         Class obj = class1.getClass(); 
         System.out.println(obj);

         // sub class SubClass1
         Class obj2 = subclass.getClass();
         System.out.println(obj2);

         Class xy = obj.asSubclass(obj2);

         System.out.println(xy);
      } catch(ClassCastException e) {
         System.out.println(e.toString());
      }
   }
}
class SubClass {
   // sub class
} 

Test it Now

Output:

class ClassasSubclassExample1
class SubClass
class ClassasSubclassExample1

Example 2

package Class;
public class ClassasSubclassExample2 {
         public static void main(String[] args) {
         ClassasSubclassExample2 class1 = new ClassasSubclassExample2();
         SubClass1 subclass = new SubClass1(); 
         Class obj = class1.getClass(); 
         System.out.println(obj);

         // sub class SubClass1
          Class obj2 = subclass.getClass();
         System.out.println(obj2);

         Class xy = obj2.asSubclass(obj);
         System.out.println(xy);
       } 
}
class SubClass1 extends ClassasSubclassExample2 {
     public SubClass1()
     {
         System.out.println("Derived Class Constructor........");
     }
}

Test it Now

Output:

Derived Class Constructor........
class Class.ClassasSubclassExample2
class Class.SubClass1
class Class.SubClass1

Next TopicJava Class

← prev next →

For Videos Join Our Youtube Channel: Join Now

Feedback

Send your Feedback to [email protected]

Help Others, Please Share

Learn Latest Tutorials

Splunk

SPSS

Swagger

Transact-SQL

Tumblr

ReactJS

Regex

Reinforcement Learning

R Programming

RxJS

React Native

Python Design Patterns

Python Pillow

Python Turtle

Keras

Preparation

Aptitude

Reasoning

Verbal Ability

Interview Questions

Company Questions

Trending Technologies

Artificial Intelligence

AWS

Selenium

Cloud Computing

Hadoop

ReactJS

Data Science

Angular 7

Blockchain

Git

Machine Learning

DevOps

B.Tech / MCA

DBMS

Data Structures

DAA

Operating System

Computer Network

Compiler Design

Computer Organization

Discrete Mathematics

Ethical Hacking

Computer Graphics

Software Engineering

Web Technology

Cyber Security

Automata

C Programming

C++

Java

.Net

Python

Programs

Control System

Data Mining

Data Warehouse

^{Like/Subscribe us for latest updates or newsletter}