Java: What is the difference between and ?

Question

I am unable to understand the following text... Does it mean that is for empty constructors? Why is important to have two different versions?

Answer 1

Just to add If you use Class.forName method, it only intializes the class. So from within this method, it makes a call only to clinit and when you use newInstance on the object returned from forName, it will call init for the instance initialization. You can use below code to see it in debug.

public class ByteCodeParent
{
 public static String name="ByteCode";
 public ByteCodeParent()
{
    System.out.println("In Constructor");
}

 static
 {
     System.out.println("In Static");
 }

 {
     System.out.println("In Instance");
 }

To test, use

   Class bcp2 =(Class) Class.forName("ByteCodeParent");
ByteCodeParent bcp4= bcp2.newInstance();