It is beneficial to create new static methods to replace lambda expressions?

Similar Questions

• Create a static method that verifies things without if statements

  The majority() method takes three Boolean values. The method returns true if two or more Boolean values are true, but otherwise, returns false. The following code performs this task quite easily, but how do I write the method without the if statements?
  

  public class majority_program {
    public static void main(String[] args) {
      
      System.out.println(majority(true, false, true)); // Prints true on the screen since 2 out of 3 booleans are true
      
    }
    public static boolean majority(boolean a, boolean b, boolean c) {
      int amount = 0;
      
      if (a == true) amount++;
      if (b == true) amount++;
      if (c == true) amount++;
      
      if (amount >= 2) return true;
      else return false;
    }
  } 

  967518 wrote:
  The majority() method takes three Boolean values. The method returns true if two or more Boolean values are true, but otherwise, returns false.
  [...] But how can I write the method without the if statements?

  You can put them all together in a larger case, but this makes it more readable:

  return ((a&&b)||(a&&c)||(b&&c));
  

  Good bye
  DPT

• Can not create new email without Spam in Outlook Express - response and transmit works ok.

  When you create a new message in Outlook Express - recipients receive messages in their records of Spam or with a message

  who cannot open it.  When you reply or forward a message, this does not happen.  What can I do?  E-mail address is removed from the privacy *.

  You may have a damaged identity especially if it's the default main identity. File | Identities | Add the new identity. Create a new one and try it. If all goes well, you can import your messages and address book from the old identity and delete it.

  Note: Do not use the main word in the name of the new identity.

  If this does not solve it, please have someone you send the error message which receive and copy & paste it into an answer here.

• Why not use the static methods - example

  Hello world
  
  I would like to continue the below thread about "why not use static methods.
  Why not use the static methods
  with the concrete example.
  
  In my small application, I need to be able to send keystrokes. (java.awt.Robot class is used for this)
  I created the following class for these "operations" with static methods:
  

  public class KeyboardInput {
  
       private static Robot r;
       static {
            try {
                 r = new Robot();
            } catch (AWTException e) {
                 throw new RuntimeException(e + "Robot couldn't be initialized.");
            }
       }
       
       public static void wait(int millis){
            r.delay(millis);
       }
       
       public static void copy() {
            r.keyPress(KeyEvent.VK_CONTROL);
            r.keyPress(KeyEvent.VK_C);
            r.keyRelease(KeyEvent.VK_C);
            r.keyRelease(KeyEvent.VK_CONTROL);
       }
  
       public static void altTab() {
            r.keyPress(KeyEvent.VK_ALT);
            r.keyPress(KeyEvent.VK_TAB);
            r.keyRelease(KeyEvent.VK_TAB);
            r.keyRelease(KeyEvent.VK_ALT);
       }
  
                 // more methods like  paste(), tab(), shiftTab(), rightArrow()
  }

  You think it's a good solution? How could it be improved? I saw something Singleton vs somewhere of static methods. Wouldn't be better to use Singleton?
  
  Thanks for your comments in advance.
  lemonboston

  maheshguruswamy wrote:

  lemonboston wrote:

  maheshguruswamy wrote:
  I think a singleton might be a better approach for you. Just kill the public constructor, and provide a getInstance method to provide late initialization.

  Maheshguruswamy thanks for the tips on the steps create a singleton of this class.
  Perhaps you could say also why do you say that it would be preferable to use singleton? What is behind it? Thank you!

  In short, it seems to me that a single instance of your class will be able to coordinate actions across your entire application. If a singleton should be sufficient.

  But who doesn't answer why he expected prefer a singleton instead of a bunch of static methods. Functionally, the two are almost identical. In both cases, there is that a single 'thing' to call methods - either a single instance of the class or the class itself.

  To answer the question, the main reason to use a Singleton on a class of static methods is the same reason readers much of not static vs static decisions: polymorphism.

  If you use a Singleton (and and interface), you can do something like this:

  KeyboardInput kbi = get_some_instance_of_some_class_that_implements_KeyboardInput_somehow_maybe_from_a_factory();
  

  And then everything calling public methods of KBI has to know that there an implementor of this interface, without worrying about what concrete class is, and you can replace some implementation is appropriate in a given context. If you do not need to do, then the approach of the static method is probably enough.

  There are other reasons that may suggest a Singleton - serialization, persistence, use as a JavaBean pop to mind - but they are less frequent and less convincing in my experience.

  And finally, if this thing keeps updated a State between method calls, even if you can manage it with static member variables, it is more in line with the OO paradigm to make them non-static fields of an instance of this class.

• Public static method & amp; Asynchronous Web service... Save me

  Some ninjas need asynchronous to help me fill in the way that it works in Flex...
  
  Let's say we have an actionscript class called 'student '. I try to include a static method called findById(id:int) back student type. In theory, which allows me to create a new student by searching for the specific student by, say, a Web Services call...
  
  var newStudent:Student;
  newStudent = Student.findById (920);
  
  Now, the whole plan falls apart at the point where it's time to make the WebService call. For the life of me I can't figure out how to get the result of the Web service call to the return value of the findById() method. I've added the different listeners and created functions for them, but how to get the object resulting in, say, webserviceHandler() method in findById() to return?
  
  I'm quite sure I'm just a jerk Asynch stuff. Great programming karma awaits the person who can make me a little less stupid.
  
  -Steve
  Text

  You can change your Student.findById function to take two parameters: an entire ID and a callback function. The callback function must accept a ResultEvent parameter and you get your student.

• Cannot create new folders

  After you perform a system restore, I find that I have more freedom to create new folders or something new when I right-click. Anyone have any ideas?

  Hi JakStraw,

  ·         You get the error message?

  ·         Have you tried to create the folder in safe mode?

  Follow these methods.

  Method 1: Performs a search using the Microsoft safety scanner.

  http://www.Microsoft.com/security/scanner/en-us/default.aspx

  Note: The data files that are infected must be cleaned only by removing the file completely, which means that there is a risk of data loss.

  Method 2: Run the fixit of the article.

  Diagnose and repair Windows files and folders problems automatically

  Method 3: Scan the file system (CFS) auditor to repair corrupted files.

  Description of Windows XP and Windows Server 2003 System File Checker (Sfc.exe)

  http://support.Microsoft.com/kb/310747

• How to create a static library

  Anyone know how to create a static library using QNX Momentics 10.2?

  Is it possible to create a static library which contains the qml file?

  I found this obsolete article: https://supportforums.blackberry.com/t5/Native-Development-Knowledge/How-to-create-a-shared-or-stati...

  Thank you

  File > New > BlackBerry Project and you get the following window:

  

  You also like the Fund of this model of library by @IsaacGordezky https://github.com/blackberry/Cascades-Community-Samples/tree/master/Cascades-Library-Template.

• How can I use objects in a static method

  Hello everyone, I have a problem, I need to show objects such as labelfield in a screen, and there is no problem, but, when I call a static method (due to the process that are made) I call a static method, I use a screen like this:

  static display;

  And when I print I use screen.add (object);

  But in the screeen nothing happens, please, can you help me?

  OK, if you use a static method ot locate your screen, so that you can reference your screen from the Thread.

  This is not, in my opinion, a good way to do what you're trying to do.

  As an alternative, pass a reference to your screen to your feed.  Say your current Thread it looks like:

  SerializableAttribute public class MyTherad extends Thread {}

  Variables of your Thread

  public MyTherad() {}

  your constructor for Thread stuff

  }

  public void run() {}

  What is your wire actuallly

  MyScreen.update (...); To update your screen

  }

  }

  and start you by doing this:

  AThread MyThread = new MyThread();

  aThread.start ();

  You can change it to something like:

  SerializableAttribute public class MyTherad extends Thread {}

  Variables of your Thread

  MyScreen myscreen = null;

  public MyTherad (MyScreen myscreen) {}

  your constructor for Thread stuff

  this.myScreen = myScreen;

  }

  public void run() {}

  What is your wire actuallly

  myScreen.update (...); To update your screen

  }

  }

  and start you doing this in your MyScreen:

  AThread MyThread = new MyThread (this);

  aThread.start ();

  Now you Thread has a revference on the screen, it will update and can update the non-static version.  This will do a lot of things much easier.

  I hope this helps.

  Edit:

  I see that I was in change when arkadyz posted what is pretty much exactly the same solution!

• How to create a static ARP using SNMP?

  Hello

  I want to create a static ARP using SNMP.

  I can delete an ARP by setting oid ' 1.3.6.1.2.1.4.22.1.4' to '2'.

  But none of

  '1.3.6.1.2.1.4.22.1.1 '.

  '1.3.6.1.2.1.4.22.1.2 '.

  '1.3.6.1.2.1.4.22.1.3 '.

  '1.3.6.1.2.1.4.22.1.4 '.

  can be modified or created

  SNMP-server community is RW

  I can change the other oid, for example 'type sysName' oid 1.3.6.1.2.1.1.5.0

  I used this command to create a new ARP:

  set SNMP v2 192.168.10.1 private oid 1.3.6.1.2.1.4.22.1.1 integer 1

  the answer:

  SNMP response: reqid 16, errstat 11, erridx 1

  ipNetToMediaEntry.1 = 1

  errstat 11 is NOCREATION

  And I used the tool "Mib Browser" to set a static ARP.

  the answer is NOCREATION too.

  I searched a lot of time, a lot of people have this problem,

  someone said the oid ipNetToPhysicalPhysAddress or inetCidrRouteTable is alternative,

  but our switch do not have these oids.

  I can't find a solution.

  I want to know if the task can be performed.

  Help, please.

  Concerning

  Dear Fu

  Thank you to reach small business support community.

  I'm not positive, that this can be done on small business goes, however, what is your version of the model and the firmware of the switch so I can continue the investigation.

  I'll be looking forward to your reply.

  Kind regards

  Jeffrey Rodriguez S... : | :. : | :.
  Support Engineer Cisco client

  * Please rate the Post so other will know when an answer has been found.

• Problem creating new folders on my PC

  When I try to save a new document, my PC will not let me create a new folder to place it in... In fact, I can't create new folders, either within an existing folder structure, or on the desktop. It is a new problem for my computer. I can save these documents into existing folders or on the desktop, but cannot create a new folder on the desktop or in an existing file structure. Any suggestions? Thanks, Wayne

  Hi Wayne,

   
  1. how exactly you are trying to create a new folder?
  2. do you have a code error message when you try to create a new folder?
  3. don't you make changes to the computer before the show?
  4. are you logged as administrator?
   
  Method 1:
  Attempt to create the folder in clean boot mode:
  Reference:
  How to perform a clean boot for a problem in Windows Vista, Windows 7 or Windows 8
  http://support.Microsoft.com/kb/929135
  Note: See "How to reset the computer to start as usual after a clean boot troubleshooting"
  under more information to prepare the computer to start as usual after a repair.
   
  Method 2:
  Auditor of file system (CFS) scan to fix all of the corrupted system files. To do this, follow the steps mentioned in the link below:
  How to use the System File Checker tool to fix the system files missing or corrupted on Windows Vista or Windows 7
  http://support.Microsoft.com/kb/929833
   
  Method 3:
  If the methods above do not solve the problem, then follow the steps mentioned by Linda Yan dated Monday, May 24, 2010 08:38, the link given below.
  http://social.technet.Microsoft.com/forums/en/w7itprogeneral/thread/97de8a2a-12f2-4381-A409-a78f4ae551cf
  To do: Important This section, method, or task contains steps that tell you how to modify the registry. However, serious problems can occur if you modify the registry incorrectly. Therefore, make sure that you proceed with caution. For added protection, back up the registry before you edit it. Then you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click on the number below to view the article in the Microsoft Knowledge Base:
  How to back up and restore the registry in Windows
  http://Windows.Microsoft.com/en-in/Windows7/back-up-the-registry

  Hope this solves the problem. If the problem persists, you can write to us and we will be happy to help you further.

• Cannot create new folders from anywhere!

  the ability to create new folders is lost. Help, please. I'm in big trouble. Some sites said I have to recreate the program stuff. Another suggested first, I try what follows, but can not find props everywhere, even in research. Also, do a right click on search does not work.

  Use the (SFC.exe) System File Checker tool to determine which file is causing the problem and then replace the file. To do this, follow these steps:

  1. Open an elevated command prompt. To do this, click Start, click principally made programs, Accessories, right-click guest, and then click run as administrator. If you are prompted for an administrator password or a confirmation, type the password, or click allow.
  2. At the command prompt, type the following command and press ENTER:
     sfc/scannow

     The sfc/scannow command analyzes all protected system files and replaces incorrect versions with appropriate Microsoft versions.

  Hello

  1. what happens when you search for "cmd" in the start menu to search?

  2. what happens when you create a new folder? Do you get any error messages?

  3. what happens when you tried to create a new folder in safe mode?

  4. are you aware of changes to the computer before the show?

  Some of the registry keys could have damaged or needs to be repaired. It can also occur if there is no third-party program is blocking approval. We will analyze and identify the cause of the problem.

  Method 1: Safe Mode

  Start your computer in safe mode and check the number.

  To start your computer in safe mode

  http://Windows.Microsoft.com/en-us/Windows7/start-your-computer-in-safe-mode

  Method 2:

  Try using the command prompt and try to create a new folder and check if you can create a.

  To do this, follow the steps below:

  a. Click Start.

  b in the start search box type CMD and press to enter.

  c. type cd... publicity and press ENTER, repeat the cd... and press ENTER until you have c:

  d. now, type the following at the command prompt:mkdir folder_name
  Here, folder_name is the name of desired folder

  e. check if the folder is created in the drive C

  Method 3:

  If you are able to open CMD method 2, you can try to scan SFC and check. See the steps. :

  Perform a SFC scan on your computer. Consult the following link:

  How to use the System File Checker tool to fix the system files missing or corrupted on Windows Vista or Windows 7

  http://support.Microsoft.com/kb/929833

  Method 4:
  

  "If the problem persists, I suggest you to consult the steps mentioned by.
  Linda Yan' article.

  http://social.technet.Microsoft.com/forums/en-us/w7itprogeneral/thread/97de8a2a-12f2-4381-A409-a78f4ae551cf

  Important: This section, method, or task contains steps that tell you how to modify the registry. However, serious problems can occur if you modify the registry incorrectly. Therefore, make sure that you proceed with caution. For added protection, back up the registry before you edit it. Then you can restore the registry if a problem occurs. For more information about how to back up and restore the registry, click the following windows Help article.

  Back up the registry
  http://Windows.Microsoft.com/en-us/Windows7/back-up-the-registry

  Hope this information helps.

• extending class that contains static methods

  Hallo,
  is there a way to extend the static methods?
  
  I think that the small example can better explain what I need.
  

  public class StaticClass {
  
       public static void main(String[] args) {
            A a1 = new A1();
            A a2 = new A2();
            System.out.println("a1.f()=" + a1.f() + ", it would be 1");
            System.out.println("a1.foo()=" + a1.foo() + ", it would be 1");          // warning: The static method foo() from the type A should be accessed in a static way
            System.out.println("a2.f()=" + a2.f() + ", it would be 2");
            System.out.println("a2.foo()=" + a2.foo() + ", it would be 1");          // warning: The static method foo() from the type A should be accessed in a static way
            System.out.println("A1.foo()=" + A1.foo() + ", it would be 1");
            System.out.println("A2.foo()=" + A2.foo() + ", it would be 2");
       }
  }
  
  abstract class A {
       public static int foo() { return 0; }
       public int f() { return foo(); }
  }
  
  class A1 extends A {
       public static int foo() { return 1; }
  //     public int f() { return foo(); }
  }
  
  class A2 extends A {
       public static int foo() { return 2; }
  //     public int f() { return foo(); }
  }

  The line commented out in A1 and A2 are because I don't want to duplicate a same code
  
  Thanks a lot for any suggestion,.
  
  Carlo
  
  Published by: 918374 on 14-giu-2012 8.47

  You must present a new class/interface that describes the InputOut so you can use it without an instance of IO (and can delegate the normal methods of).

  interface IODescriptor {
    String getName();
    String getDescription();
    InputOutput createIO();
  }
  
  public abstract class AbstractIODescriptor implements IODescriptor {
    // save name, prefix and implements getDescription() with translator
  }
  
  public abstract class InputOutput {
    public InputOutput(IODescriptor descriptor) {
    // etc
  }
  

• Get an error when creating new attributes

  Hi all
  
  I'm creating new attributes to the gift list registration form, like 'Phone number', 'City' and so on...
  All attributes are already created in the production_core and database Editions, in the dcs_giftlist table, and the new giftlists.xml file is also created, see below:
  

  <gsa-template xml-combine="append">
       <item-descriptor name="gift-list" item-cache-size="1000" query-cache-size="1000" display-name-resource="itemDescriptorGiftList">
            <table name="dcs_giftlist" type="primary" id-column-name="id">
                 <property name="clientName" data-type="string" column-name="client_name" category-resource="categoryBasics" display-name-resource="Client Name (Nome do Cliente)">
                      <attribute name="propertySortPriority" value="-10"/>
                 </property>
                 <property name="emailAddress" data-type="string" column-name="email_address" category-resource="categoryBasics" display-name-resource="E-mail">
                      <attribute name="propertySortPriority" value="-10"/>
                 </property>
                 <property name="cityName" data-type="string" column-name="city_name" category-resource="categoryBasics" display-name-resource="City Name (Nome da Cidade)">
                      <attribute name="propertySortPriority" value="-10"/>
                 </property>
                 <property name="phoneNumber" data-type="string" column-name="phone_number" category-resource="categoryBasics" display-name-resource="Phone Number (Numero de Telefone)">
                      <attribute name="propertySortPriority" value="-10"/>
                 </property>
            </table>
       </item-descriptor>
  </gsa-template>

  Although, when I try to call the attribute created on the page, such as "GiftlistFormHandler.cityName", the following error message appears:
  

  ]] Root cause of ServletException.
  CONTAINER:atg.servlet.jsp.ContainerJspException: atg.droplet.DropletResources->dropletDescriptorCantFindProper
  ty : Can't find property: clientName in class atg.projects.store.gifts.StoreGiftlistFormHandler; SOURCE:atg.dr
  oplet.DropletException: atg.droplet.DropletResources->dropletDescriptorCantFindProperty : Can't find property:
   clientName in class atg.projects.store.gifts.StoreGiftlistFormHandler
          at atg.taglib.dspjsp.IncludeTag.doEndTag(IncludeTag.java:786)
          at jsp_servlet._myaccount.__giftlisthome._jsp__tag22(__giftlisthome.java:1102)
          at jsp_servlet._myaccount.__giftlisthome._jsp__tag21(__giftlisthome.java:1058)
          at jsp_servlet._myaccount.__giftlisthome.access$10(__giftlisthome.java:1032)
          at jsp_servlet._myaccount.__giftlisthome$JspFragmentHelper.invoke0(__giftlisthome.java:820)
          Truncated. see log file for complete stacktrace
  Caused By: atg.droplet.DropletException: atg.droplet.DropletResources->dropletDescriptorCantFindProperty : Can
  't find property: clientName in class atg.projects.store.gifts.StoreGiftlistFormHandler
          at atg.droplet.DropletDescriptor.<init>(DropletDescriptor.java:1368)
          at atg.droplet.DropletDescriptor.getDropletDescriptor(DropletDescriptor.java:1238)
          at atg.droplet.DropletDescriptor.getDropletDescriptor(DropletDescriptor.java:1195)
          at atg.droplet.DropletDescriptor.getPropertyValue(DropletDescriptor.java:443)
          at atg.droplet.DropletDescriptor.getPropertyStringValue(DropletDescriptor.java:245)
          Truncated. see log file for complete stacktrace

  I would like to know if there is any other xml file, that I need to change, or if I need to extend the class FormHandler, adding new attributes.
  
  Any help will be appreciated,
  
  Thanks :)

  Hi Lucas,.

  I don't see anyway decent to do this, the only way I think now is that you need to extend GiftListTools and GiftListManager and then 'find and replace' these methods that are called in your implementation. You must also override the addItemToGiftList() method in formHandler.

  In GiftListManager, you will need to override createGiftlistItem() and add the new property, you have recently added in GiftListManager and set it in the repository in createGiftlistItem().
  Ex:
  create mutableRepositoryItem and then
  mutableRepositoryItem.setPropertyValue ("propertyName", "propertyValue");
  for any properties that you want to set.
  If it works then you must override the method to get the point of filing of the database also.

  --
  Angelique

• How the static methods are mocked in any mocking framework JMockit?

  I've learned that we can mock static methods using Basic with PowerMock java library? Jmockit.Want to understand how it does in short in-house?
  
  I think I understand:-as we define the mock class in the test case itself (although there are different ways to create the mock class in each frame as using a syntax of waiting in Jmockit), these framework must define custom classes thru Chargers that they should be looking for this class definition in the unit test is. Its an assumption. Not sure if this is correct? But even if I'm right, preference of classloader hirerchy is boootstraploader then applicationclassloader than customerclassloader. So, how's that search for customerclassloader instead of applicationclassloader? is there a way that we can set the preference of the customer above on applicationclassloader class loader?

  You can tell your not custom class loaders to delegate to its parent.

  Or you can give the custom class loaders a different classpath from its parent and place classes to be loaded by the loader custom only on the way to his class, and on the parent.

• creating new user of the old user

  Hello
  How can we create new user as a former user.
  That may be a short and sweet method.
  
  Thank you
  Mhamed

  I'd be happy to but frankly the solution of Centinul years light better than that.

  1. already written.
  2. easier.
  3. faster.

  I would use his link instead and I consider strongly marking its "correct". This helps the forum too because he gave you the response time will not
  be lost, trying to answer a question already answered.

  Best regards

  mseberg