Follow-up question on the wire 'sort by 'total' in the answers.

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  I forgot the answer to my security question, I tried to update these answers, but to update them also, I must first answers old issue of security which I forgot how can I update and change my security question and the answers

  ?

  You must ask security team account Apple to reset your security questions. To contact them, click here and choose a method; If this page does not list one for your country or if you are unable to call, complete and submit this form.

  (143315)

• I've already asked a few questions and got some responses, but now I can't find the page with the question or the answer.

  Where and how do get me to this page again. ???  I've been clicking on each link.

  Click on your name of profile annette blunda at the top of any page, and you can see all your questions.

• question on the GC in Java

  Given

  Given:
  3. class Beta { }
  4. class Alpha {
  5. static Beta b1;
  6. Beta b2;
  7. }
  8. public class Tester {
  9. public static void main(String[] args) {
  10. Beta b1 = new Beta(); Beta b2 = new Beta();
  11. Alpha a1 = new Alpha(); Alpha a2 = new Alpha();
  12. a1.b1 = b1;
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  16. // do stuff
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  18. }

  Why there is 1 single object will be eligible for GC. I need an explanation claire pls

  Newbie says:

  jverd wrote:

  Newbie says:

  Pinto wrote:
  Because this looks like a duty, how about you, you post what you think, what is the answer. Instead of just gave you the answer that you will just hand as your own work.

  It is not a duty. It's the SCJP practice test.

  However, as you try to learn, you will learn better if you think that it through as much as possible, post what you think and why and get feedback on that, rather than just a question for the answer.

  Objects how you qualify and why?

  Thank you for your joy. First of all, I have rename the variable Alpha object instance. now, I have

  Given:
  3. class Beta { }
  4. class Alpha {
  5. static Beta x;
  6. Beta y;
  7. }
  8. public class Tester {
  9. public static void main(String[] args) {
  10. Beta b1 = new Beta(); Beta b2 = new Beta();
  11. Alpha a1 = new Alpha(); Alpha a2 = new Alpha();
  12. a1.x = b1;
  13. a1.y = b1;
  14. a2.y= b2;
  15. a1 = null; b1 = null; b2 = null;
  16. // do stuff
  17. }
  18. 
  

  I have a stack containing a1, a2, b1, b2 and the pile is containing 2 objects of type Alpha, 2 objects of the beta type, x, y *(AM I RITE AT HERE) *.

  Yes. Note that x and are among the two objects of Alpha.

  On line 12 and 13, the instance y variable and the class variable x class Alpha point to an object of class b1 Beta.

  Close. The instance y variable to one of the Alpha (not of the Alpha class) and the class variable x of class Alpha point to a Beta - the same beta object that is indicated by b1.

  On line 14, * instance of variable y * points to an object of class Beta b2.

  Variable y of another Alpha object instance pointing to the second Beta - the same object as that is indicated by b2.

  Note that there are two variable y (one for each Alpha object) and a variable x (a for class global Alpha). It's the difference between an instance variable (non-static member) and a class variable (static member).

  Finally, at line 15, a1, b1, b2 are set to null.

  Well Yes.

  Therefore, I think that there are 2 items that are eligible for GC (1 object of type Alpha and beta type 1 object)

  Well, let's see.

  A1 is null, then nothing no points to the first Alpha, GC-able. In addition, y of this first Alpha is more advanced on the first beta version, so if you think that this makes this inaccessible Beta. However, the class variable x (which is not specific to an instance of Alpha) always points to the first beta version. So far, a single GC-able object.

  B1 is zero, so it is more pointing to the first beta version, but still Alpha.x points to the first beta version. Still a GC-able object.

  B2 is zero, so it is no longer points to the second Beta, but Alpha is second again is the case, then the second Beta is always accessible. Still a GC-able object.

  Remember, there are two variables y - one for each instance - Alpha - and one variable x a for class Alpha as a whole.

  Part of what makes this confusing example is that they followed a syntactically legal approach but bad practice to use a reference variable to refer to a static class member, rather than the name of the class.

  a1.x // legal, but confusing
  Alpha.x // preferred
  
  a1.y // the only legal way
  Alpha.y // error, won't compile -- how would the compiler know WHICH Alpha instance's y variable we mean?
  

• Keep the answers for slide in verification of knowledge

  Hello

  I'm new to the forum and I hope that someone will be able to help.

  I created 3 slides of verification of knowledge with the back button. I would like users to be able to click on the back button and review the previously placed responses.

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  Thank you!

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  qrodgers

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• Hello.. I've forgotten the answers to my security questions... I do not have the chance to remember the... What can I do now? No idea how delet old questions and put the new ones? PLEASEEE help me

  Hello.. I've forgotten the answers to my security questions... I do not have the chance to remember the... What can I do now? No idea how delet old questions and put the new ones? PLEASEEE help me

  Hello

  If you set an alternate e-mail address, you can reset your security questions. Follow the instructions here to check if this option is available:

  If you forgot the answers to your questions of security of Apple ID - Apple Support

  Otherwise, you will need to contact the Apple Support. The information is available here:

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• A few questions on the framework of the actor

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  Your question is beyond the scope of these Forums for answers. It is better suited for the IT Pro TechNet public. Please ask your question in the following forum.

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