Class Loader Java

Class Loader Java: Here, an object of a class is created without using new keyword using java.lang.ClassLoader. See the code.

public class Demo
{
  int x = 10;
  public static void main(String args[]) throws Exception
  {     
    Class cls = Class.forName("Demo");

    ClassLoader cLoader = cls.getClassLoader();
    Class cl = cLoader.loadClass("Demo");

    Demo d1 = (Demo) cl.newInstance();                                                          
    System.out.println(d1.x);                              // prints 10
  }
}

Class cls = Class.forName(“Demo”);

The forName() method of class Class returns an object of Class. Now cls represents Demo class.

ClassLoader cLoader = cls.getClassLoader();
Class cl = cLoader.loadClass(“Demo”);

getClassLoader() method of Class returns an object of ClassLoader (it is abstract class). loadClass() returns an object Class.

Demo d1 = (Demo) cl.newInstance();

The newInstance() method returns an Object and is type casted to Demo. Now Demo object d1 is created without using new keyword. It is a very round about process. The best one is using cloning.

Would you like to know all the 5 styles of creating Java object without using new keyword?