JAVA EE: How to create a new instance using newInstance method of class Object

Tuesday 24 October 2017

Click here to watch in Youtube :
https://www.youtube.com/watch?v=WjkAPuYtAF8&list=UUhwKlOVR041tngjerWxVccw

DisplayMessage.java

public class DisplayMessage
{
    public void sayHello()
    {
        System.out.println("Hello.......");
    }
}

ReflectionDemo.java

public class ReflectionDemo
{
    public static void main(String[] args)
    {

        try
        {
            Class<?> classObj = Class.forName("DisplayMessage");
            /*
             * Returns:a newly allocated instance of the class represented by
             * this object.
             */
            DisplayMessage displayMessage = (DisplayMessage) classObj.newInstance();
            displayMessage.sayHello();
        }
        catch (InstantiationException | IllegalAccessException
                | ClassNotFoundException e)
        {
            e.printStackTrace();
        }

    }

}