When the class will be loaded???

[Balaji Bang]

class Phone {
	     static String device = "Phone.device";
	     void showDevice() {
	        System.out.print("Phone.showDevice," + device + " ");
	     }
	     Phone() {
	        showDevice();
	     }
	  }
	  class Mobile extends Phone {
	     String device = "Mobile.device";
	     void showDevice() {
	        System.out.print("Mobile.showDevice," + device + " ");
	     }
	     Mobile() {
	        showDevice();
	     }
	     public static void main(String[] args) {
	    
	      Mobile n = new Mobile();
	      n.showDevice();
	   }
	 }

This is from Devaka's Exam. But not sure because I copied this in my local disk....

OUTPUT :Mobile.showDevice,null Mobile.showDevice,Mobile.device Mobile.showDevice,Mobile.device

When the class Phone will be loaded to get the static variable device initialized???

[Rafael Angarita]

I think the static variable device is being correctly initialized.

The thing is that the method showDevice() of the Phone class is never run. But I'm not totally sure why.

[James Tharakan]

when you enter the command
java Mobile

JVM trys to load Mobile class, at that time it notices that the class Mobile has extended Phone class.So it will load Phone class .
Then it will see that Phone class has a static member .So it will assign the valuue for the static member and then it will load the class Mobile.

[Rafael Angarita]

The Phone constructor calls the overridden version of showDevice() before the class Mobile gets initialized.

But why the Phone constructor calls the overridden version of showDevice()? Is it because there is no instance of Phone?

[James Tharakan]

Rafael Angarita wrote:But why the Phone constructor calls the overridden version of showDevice()? Is it because there is no instance of Phone?

Actually the code would be like this....

 Phone() {  
            this. showDevice();  
          }  

I guess now you got it..