Equal method and ArrayList Testing

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• Equals, method

  Hi all
  Consider this example,
  Class A {}
  Public Shared Sub main (String [] args) {}
  An a1 = new A();
  An a2 = new A();
  {if (a1. Equals (a2))}
  System.out.println ("Equal");
  } else {}
  System.out.println ("does not match");
  }
  }
  }
  I know that using the equals() method. but there is no equal method defined in the class a. also, I didn't use any library. can someone explain this?

  874474 wrote:
  I know that using the equals() method. but there is no equal method defined in the class A.

  Has, as all classes in Java, is a subclass of the object and therefore inherits all of the public methods of the object, including equals().

• How I have difficulty saving energy and media test failiar errors?

  Hey Experts!

  I have a Toshiba Satellite A100 LE6 & model # PASSAOC-LE-600th portable machine with XP Sp3 and at the start of my machine, I get two errors related power saver error and media test failiar

  Error.1) error of power gain. Unrecoverable error occurred this program may be terminated code: 0x0

  Error.2) PXE - E61: media test check the cable of failiar

  So first of all, what is the Toshiba power saver? Secondly why I get these messages and the third, how to fix?
  I'm not a related person computer I am Civil Engineering
  Please help me

  Hello Farman

  I agree with Akuma, but I'm a bit skeptical about the Power saver error message.
  So please let know us if the problem will be solved after the installation of Power saver.

• Set of geometry invoke node: do not have this method (and why is it red?)

  Hi all

  So I take my first steps with the 3D picture control, and I stumbled over the first hurdle!

  How to create a 'set of geometry' call, node, as shown in this photo? If I have the wiring in the output of the object to create an invoke node I get a standard invoke node with several options, but none related to the geometry.

  Second question: why is the Red node to invoke?

  Finally found the reason:

  alignment has been deprecated in LV8.5, from the help:

  Obsolete properties, methods, and events

  LabVIEW 8.5 does not support the properties, methods and events:

  • Property of the geometry of the SceneObject class. Use the Drawable property instead.

• Lets run the multilingual method and input of blackBerry Smartphones

  I've updated the 7.1 os and it took me to multilingual method and input. I had once managed a whole upward. in any case, it seemed now missing on the phone, and on the desktop PC does not show language. I did remove the OSI and reinstall, the the same problem. I want that it multilingual and other language input method. Any suggestion? Please take note.

  OK... that now makes sense... the automatic method detects your BB and the level of operating system installed, but is not able to download correctly what it needs from the Internet to continue. And the Red Star means that there is an update, he wants to offer you, but again he has trouble to download what suits him.

  So, what you need to do is to defeat the automatic method and force instead of things. The easiest way is, on a PC (you can not do on MAC):

  1) uninstall all the BB OS packages from your PC,

  (2) make sure you have the BB Desktop Software already installed

  • http://us.BlackBerry.com/apps-software/desktop/?lid=us:BBsoftwareesktopSoftware & Cal = us: bbsoftware

  (3) download and install to your PC, the BB OS package you want:

  • http://us.BlackBerry.com/support/downloads/download_sites.jsp
  • If you want to just reload your current version, you can access your carriers download portal and get the same exact package you are already running
  • • KB23393 How to check the model number and the version of the BlackBerry device software on a BlackBerry smartphone
  • But if you want to go for an update, you can see what your company has, or you can dig into all of the companies that support your specific model BB number and compare versions of each provision.
  • Also consider this information as you choose your BB OS package:
  • • KB05305 Location of support for BlackBerry smartphones

  4) remove, on your PC, all copies of the SELLER. XML... There will be at least one and maybe 2, and they will be located in the same way or to (it changes based on your version of Windows) these files:

  • C:\Program Files (x 86) \Common Files\Research In Motion\AppLoader
  • C:\Users\(your Windows username) \AppData\Roaming\Research In Motion\BlackBerry\Loader XML

  (5) run the Desktop software and connect your BB

  If you chose to update your BB OS, then the software should immediately offer the bundle of BONES that you have installed on your PC, before you can do anything else. If, during the process, your BB votre BB a '507' error, simply unplug the power cord of the BB USB and reinsert it. do nothing else... This should allow the installation to continue.

  If you have chosen your BB exact same OS package that is already running on your BB, then you should be able to proceed with the installation language you want (assuming, based on the location of KB, you have installed the right BB OS package that includes the language of your choice).

  Do not forget to save.

  Good luck and let us know!

• Hello.. I'm from the programming, but new to actionscript. I would like to ask if there was a library where all built in functions, methods, and events can be searched. As for VB, MSDN (of Microsoft Developer Network) used to be there. More than once it h

  Hello.. I'm from the programming, but new to actionscript. I would like to ask if there was a library where all built in functions, methods, and events can be searched. As for VB, MSDN (of Microsoft Developer Network) used to be there. More than once it happens that I write a few lines of code, but a built-in function already exists for the same thing. Is there a way to check it out ahead of time?

  An online resource are QAnywhere® to Adobe ActionScript 3 (AS3)

• What is the difference between the payment organization method and mode of payment transfer?

  What is the difference between the payment organization method and mode of payment transfer?

  As I am a new bie, I'm curious as to what it may seem a silly question.

  Thank you

  Jean

  Hi John,.

  Just to add to the comments of Avinash-

  You create methods of payment organization - say in cash, cheque, Direct deposit.

  You assign to a payroll (on the screen of definition of payroll)

  Now for assignments with this payroll, you can set payment methods Org (only those you have assigned to the level of payroll)

  The assignments may have one or more payment methods, with different percentages adding up to 100%.

  Hope that helps,

  See you soon,.

  Vignesh

• A question about the methods and parameters.

  Hey guys, this is my first post here. I am very new to Java and done a bit of C++ before Java. I had a question about the methods and parameters. I do not understand the methods; I know they can be repeated when it is called, but it's almost everything. I also know that a program should have a class that contains the main method. What I really, really understand on methods is what the parameters are. I know they are in parentheses and that is it. Could you explain what they are? I really appreciate it. Thanks to all in advance. Best regards, Michael

  Taking an example:
  Suppose you calculate area of the rectangle you need two inputs one is the length and the width. Area = l X b, where l = length, b = width

  If your method, say, calculateAreaOfRectangle (length int, int width) will be two parameters as arguments.

  System.out.println ("field of rectangle:" + calculateAreaOfRectangle (40,30);)

  public int calculateAreaOfRectangle (int length, int width) {}
  int area;
  Area = length * width;
  return of area;
  }

  So if you call this method then the output will be returned in 120.

  Parameters of a method are simply the input variables for the method of treatment for all calculations or something useful.

  And we cannot have methods inside the main method in Java. It is in the java syntax and if you do, it will throw a syntax error.

• Must I declare and place my first private methods and attributes?

  Hello
  
  Just a general question about programming style, as I'm a bit unsure what is the best practice...
  
  I wrote an Application made up of 11 classes as part of an assignment and I am it will soon... However, I started noticing that my classes are involved with public and private methods and began to wonder if there is no consensus, just if it is best to declare and place all private at the beginning of the trace class methods of those public or vice versa, and is at its best to declare and set instance variables and attributes at the beginning or end of the class , or maybe even, just before the method where they serve first?
  
  Would be grateful and advice or suggestions so that i can keep my code tidy and neat as possible...
  
  Many ways
  
  Patrick
  
  Published by: 839854 on February 25, 2011 07:23

  839854 wrote:
  .. If there is no consensus about whether it is better to declare and place all private at the beginning of the class methods will be followed by the public...

  That's what I tend to do. It is also one of the options provided in Eclipse 'code' cleaning options.

  and at its best to declare and set instance variables and attributes at the beginning

  Again, this is what I do; but that's probably because I come from a background of language of proceedings.

  or end of the class

  I tend to find that a little confusing.

  or perhaps even, just before the method where they serve first?

  A lot of people who prefer, and I can understand the arguments for it.

  Would be grateful and advice or suggestions so that i can keep my code tidy and neat as possible...

  Certain order is mandated by the DG JLS, especially when it comes to static members, but the rest is largely "in the eye of the beholder." Indentation practices and documentation (learn how to use the Javadoc) can also help a lot.

  But, in my opinion, the more important to make readable programs part is design them well.
  As Einstein said (paraphrasing): "as simple as possible, but not simpler."
  It is amazing how many programmers forget that old chestnut.

  But it is good to know that you are worried about it. Here there were more like you around.

  Winston

• How long on alternative methods of browser tests?

  Here's a question for anyone who has done professional Web design on at least a part-time basis. I'm helping a friend to decide if to get an account with a company (browsercam.com) that allows you to submit a URL and then see what it would look like using different combinations of screen sizes, operating systems and browsers. Apparently, they use a "farm" of real computers to do this. It is not cheap.

  For those of you, developers not using above society, or any similar person, that you prefer to test your CSS/HTML for compatibility with the variety of visitors to the website out there, including those with mobile devices - AND - how long do you think you use this way in a typical year? Or months? Dreamweaver Lab browser? Test it on several computers, you have access to? Send the link to multiple people using different computers and smart phones? Something else?

  Thank you!

  I'm not a big fan of screenshot services b/c a fixed image of page of a site is not tell you much. This may be OK for the quick layout controls, but it is not enough for ease of use and performance tests.  To do this, you really have to test in real browsers & devices.

  I have current versions of the 5 major browsers installed on my workstation (IE, FF, Opera, Safari & Chrome).  More MyDebugBar multi-IE test to verify legacy IE.

  http://www.my-DebugBar.com/wiki/IETester/homepage

  If you are specifically targeting a particular brand or model, mobile device, it is best to buy or borrow one.  Given the impressive number of models on the market, it is not possible to control everyone.

  Nancy O.

  ALT-Web Design & Publishing

  Web | Graphics | Print | Media specialists

  http://ALT-Web.com/

  
  

• How to access the methods and properties of the main document class

  How can I access methods and properties of the class of main document of other classes?
  Can someone give me a clue what I'm doing wrong?
  
  I use ActionScript3 in Flash CS3 with strict error checking on. I have an application with several custom classes:
  
  1. the MainMovie class is associated with the document.
  
  2. the SomeMovieClip class is associated with a movie clip symbol in the library and an instance of the symbol is placed on the main timeline.
  
  Compilation Flash returns this error message: "1061: call to a method may not set [name of the method here] through a reference with static type flash.display:DisplayObject.".
  
  I get the same error if I replace the undelined above with this code:
  
  root.gotoAndStop ("aFrameLabel");
  
  
  If I replace the same code simply with:
  
  trace (root)
  
  Flash returns [object MainMovie], which tells me that it recognizes the document class.
  
  However, if I turn the strict error checking, the compilation ends and the movie works as expected in all cases.
  
  

  root cast as a movieclip.

• Difference between Oracle and Prometric test center?

  What is the difference between Oracle and Prometric Testing Center?

  Pass the examination in a CTA is exactly the same as the exam at Prometric. The review is exactly the same and it's exactly the same thing. The only difference is the location where the examination is taken, so I believe that over-the-counter medications have set schedules to offer tests, take exams at Prometric can give you a little more freedom to your schedule.

  Answers to the questions:
  can you any valid CTA agent/Center in kolkata? Then I will be very grateful
  -You should go to www.oracle.com/education and you can search on the keywords "certification" or "OTC test"
  - Or you can call your local representative of OU. You can find your local numbers to http://education.oracle.com/pls/web_prod-plq-dad/db_pages.getpage?page_id=225
  -Please note that if you are in North America, your search for OTC drugs will not return any results. Over-the-counter medications are not available in North America.

  If someone got 051 OTC and 144 of a promeric / pearson since it granted as OCA?
  Yes

  List there is the offer of TBT that are testing to the general public?
  -You should go to www.oracle.com/education and you can search on the keywords "certification" or "OTC test"
  - Or you can call your local representative of OU. You can find your local numbers to http://education.oracle.com/pls/web_prod-plq-dad/db_pages.getpage?page_id=225
  -Please note that if you are in North America, your search for OTC drugs will not return any results. Over-the-counter medications are not available in North America.

  Is there a TBT in countries other than the United States., UK, Japan, Germany?
  -There is no over-the-counter drugs to the United States.
  -There are also over-the-counter drugs in Asia-Pacific

  CTA can be only in branches of Oracle or OAEP?
  -I don't know where are all over-the-counter medications. It is preferable to refer these questions to a representative of the ORGANIZATION unit. They will be better able to help.

  Kind regards
  Brandye Barrington
  Certification Forum Moderator
  Manager certification program

• The substitution of hashCode and equals methods

  In the example below, it displays 'true' when the child objects and b are different. That I should overide equals and hashCode method for each class that extends the person?
  
  

  public class EqualsTest {
       public static void main(String[] args){
            
            Child a = new Child("Tom",10,1);
            Child b = new Child("Tom",10,2);
            System.out.println(a.equals(b));
            
            
       }
  }
  
  class Person{
       private String name;
       private int height;
  
       private volatile int hashCode = 0; 
  
       
       public Person(String n, int h){
            this.name = n;
            this.height = h;
       }
       
       @Override
       public boolean equals(Object obj) {
            if(this == obj){
                 System.out.println("hello");
                 return true;
            }
            if(obj instanceof Person){
                 Person a = (Person)obj;
                 if(this.name.equals(a.name)){
                      return true;
                 }else{
                      return false;
                 }
            }else{
                 return false;
            }
       }
       
       @Override
      public int hashCode () { 
          final int multiplier = 23; 
          if (hashCode == 0) { 
              int code = 133; 
              code = multiplier * code + name.hashCode(); 
              code = multiplier * code + new Integer(height).hashCode(); 
              hashCode = code; 
          } 
          return hashCode; 
      } 
  
  }
  
  class Child extends Person{
       
       private int age;
       
       public Child(String n,int h,  int a) {
            super(n,h);
            this.age = a;
       }
  }

  Thank you

  It is not "optimal", it is by definition the keys are unique. But what is unique? This means that any equal 2 keys do exist in the table and means 'equal' some equals() defines as equal.

  Published by: baftos on April 18, 2011 13:25

• A recipe for writing equals method: use getClass() or instanceof?

  Hello
  
  At page 195 of the Core Java: volume 1, basic principles, 8th edition, there is a recipe for writing
  the method equals perfect. Section 4 says:
  
  Compare classes of this and otherObject. If the semantics of equals flexible in
  subclasses, use getClass test:
  
  

  if (getClass() != otherObject.getClass()) return false;

  If it has the same semantics for all subclasses, you can use an instanceof test:
  
  

  if (!(otherObject instanceof ClassName)) return false;

  My question is what it means by "If equals flexible semantics in.
  subclasses?
  
  Thank you in advance for your help!
  
  Eric

  Glad to be of assistance.

• In another thread - another method and then run Sub...

  I wrote a method to extract a string from a webpage using StreamConnection and it works perfectly... except that it runs on the main thread.  I wonder if there is a simple way to have a method that returns an object (String in this case) something to run on a thread and return it to the first thread.

  Everything I try the only thing I can get to work on the second thread is what's on the run method void, but that returns nothing... because it sucks...

  Until now what I thought is to pass the variables I need in the constructor, then set the connection stream real term where I want retruned is written in a class variable and another method that returns the class variable that has been filled with the run method... but that doesn't seem to just... thought he worked in a simple test I ran...

  A slightly different way (but completely equivalent) to work in a another thread is to create a class that implements Runnable and feed a thread. If, for any reason, you do not want to expand Thread (because your worker class extends already something else and it would be difficult to refactor), then this variant is a lifeline. You do something like this:

  class WorkerClass extends AnotherClass implements Runnable {    // ...    public void run() {       // do time-consuming work here    }}
  
  // later...WorkerClass worker = new WorkerClass();// initialize worker object. Then: new Thread(worker).start();
  

  As it is easy to turn a class in an executable (you simply add "implements Runnable" and a run() method), it's an easy way to avoid the subclassing Thread.

  Regardless of how you use to perform work in a separate thread, there is always the question of how to get the results. With the help of the observer is a common way to handle this, but in general, this means that the results are returned in the worker thread, not the thread from the main event. If you want to update the user interface, this can be a problem. Another approach is to structure your code something like the following:

  /** * Process the results of some time-consuming operation. */public void acceptResults(ResultType result) {  // ...}
  
  /** * Start a thread to carry out time-consuming work in a * separate thread and deliver the results back in the * event dispatching thread. */public void launchWork() {  new Thread() {        public void run() {           final ResultType res = computeResults();          Runnable r = new Runnable() {                public void run() {                   acceptResults(res);               }         }         Application.getApplication().invokeLater(r);      }
  
         /**        * Do time-consuming work in this method       */       private ResultType computeResults() {         // connect to server, interpret reply, etc.       } }.start();}
  

  You have the right idea that is running in a thread separate is how to manage a time consuming task. The point of all, however, is that you (the event dispatching thread) don't want to wait for the task at hand. Both the observer model and the code here offer a solution for a worker thread to do the work without blocking the thread of the event. The invokeLater() method was kindly provided by BlackBerry people to give the worker threads neatly transfer control on the event dispatching thread when needed.