Creating objects with relfections

I want to take the String object that represents the name of a class, while an object. If the string is 'Mouse', then it will create a new object of mouse.

It is the manufacturer of the mouse:
public Mouse(int weight){ 
     this.weight = weight;
}
That's what I got so far for my code:
Class<?> c = Class.forName(sub);
Constructor<?> ctorlist[] = c.getDeclaredConstructors();
I don't know how to proceed from here. I checked a few sites, but they don't make much sense to me. Can someone tell me how to create the object or at least provide a good website with a clear and easy to follow tutorial?

Thank you.

PS. I have to use reflections.

Once you have your object of class c, you should:

c.getDeclaredConstructor(int.class); // The ctor that takes an int parameter

Now you invole with:

c.newInstance(weight); // Invoke it and pass the parameter

Could not compile (I didn't compile), but it's the idea.

Published by: baftos on April 26, 2011 15:01

Tags: Java

Similar Questions

  • Creating objects with their corresponding schemas or as SYS

    Hi all

    Which is preferable? Creating objects with their corresponding schema/username, or simply use SYS to create all objects? Y at - it an advantage or a disadvantage? Are all best practices regarding that?

    For example, I have to create several objects in several different schemas (hr, oe, scott, Bishop). I could either connection in each schema individually and create objects, OR I could just connect as SYS as create them all at once. Is there any problem with the latter approach?

    Thank you.

    The rule was stated by Oracle years... do not connect as SYS... ever... except for purposes of maintenance or backup with RMAN.

    Advice is always to create the schema of the application, log in as the owner of the application, and create objects as long as this user. Do not follow this advice, all to often, end us with the created objects where they belong... often clues belonged to SYS.

  • How to create objects with names being together &amp; quot;. on the fly &amp; quot;?

    Hello world

    I don't know how to create objects with different suffixes in their references "built" on the fly via loop 'for '. I mean, it's, 'typical' how to create a few sprites could be:

    var sprite1:Sprite = new Sprite();
    var sprite2:Sprite = new Sprite();
    container.addChild (sprite1);
    container.addChild (sprite2);

    and what happens if we want to create 100 these objects to aid 'for' loop so that we do not need to type:

    var sprite1:Sprite = new Sprite();
    var sprite2:Sprite = new Sprite();
    var sprite3:Sprite = new Sprite();
    var sprite4:Sprite = new Sprite();
    ...
    var sprite100:Sprite = new Sprite();

    the question is to know how to "integrate" the number name of the instance of the object during the creation of objects of mass? I remember some old "eval" and the square brackets "["objectName"+ objectId]" magic spells, but they do not seem to work in AS3

    Greetings

    :

  • Create the directory objects with the path environment variable

    I need to create a directory object and wonder if it's valid to use an environment variable in the nom_chemin?  Example:

    CREATE or REPLACE DIRECTORY XMLDIR AS ' $ORACLE_HOME/rdbms/xml ";

    I read the following in the Oracle 11.2 documentation, but it is is not clear to me if an environment variable is allowed or not.  My reason for wanting to use a variable of environment as opposed to hard coding is for when I update, I have no back reference to the old House of Oracle.

    nom_chemin

    Specify the name of the full path of the directory on the server where the operating system files are located. Single quotes are required, so that the path name is case-sensitive.

    > I see that many developers have created objects to directory with the environment variables in the path.

    Please post reproducible test

    You know & realize that the Oracle database is independent of the operating system (OS)?

    Environment variable is OS specific.

  • Flattening of an object with a race created to fill shifts. Not good.

    Flattening or enlarge an object with a padding of race creates the filling negatively offset half the distance of the sketch of the race.

    Flattening or enlarge an object with an outside boundary creates the fill positively offset the distance of the sketch of the race.

    Flattening or enlarge an object with an indoor or outdoor race creates the negative fill offset half the distance of the plan inside of race.

    Why is this? This is a provision of trapping?

    Can I change the default values in expansion?

    Apply the effect > path > hierarchical object to filling before developing

  • How to create objects dynamically (with # dynamics of parameters)

    I need to create a set of objects based on a definition of an XML file (obtained from the server) and add them to my scene.

    I understand how to create the object using getDefinitionByName (and limitations on classes that need to be referenced to be loaded into the SWF file).

    But some objects require parameters for the constructor, and others do not. The XML code can pass easily in required parameter information, but I can't figure out how to create a new object with a dynamic set of arguments (something similar to the use of the Function.Call method of (obj, argsArray).)


    For example, I need something like this works:

    var MC = new (getDefinitionByName (str) as class). call (thisNewThing, argsArray)

    Currently, it is that I can get:

    MC var = new (getDefinitionByName (str) as class)(static, list, arguments)

    Thoughts?

    I think what Dave is asking is a little different.

    He is eager to know how to call the constructor of an object dynamically (when he knows that the number of constructor arguments when running).

    This class I will do it, but seems to be a hack:

    s http://code.Google.com/p/jsinterface/source/browse/trunk/source/core/AW/utils/ClassUtils.a? spec = svn12 & r = 12

    See the "call" method, which has first counts the number of arguments and then calls one of the "n" construction methods based on the number of constructor args.

    I have yet to find a clean way of AS3 to do ala things 'call' however.

    -Corey

  • ActiveX error message: "run-time error '429': ActiveX component can't create object" when running FSX 2004

    Hello, I hope someone can help. I use Windows 7 64-bit. on a high spec pc. When you run FS2004 (Flight Sim program) I get the error message "" run-time error '429': ActiveX component can't create object ". " That seems to relate to the flight or the CMF management computer program. This error seems to inhibit access to the CMF. I tried to load the latest ATI driver, but that makes things worse. Has anyone encountered this problem before? Hope it

    Thanks in advance

    Ianzee

    Hello Diana

    Unfortunately, none of the above worked. However, I downloaded a file recommended by Flight1 (the creators of one of the 2 games I had problems with) surprisingly, thisinstantly solved the problem it is called http://www.flight1.com/dx7vb.exe.

    Perhaps in the future someone else have this same problem with Vista 64-bit where the game, they could also try this "correction". Of course, it worked for me!

    Thank you very much for your help & trouble in front of me, it is appreciated.

    Cordially Ianzee

  • Runtime error 429 - component ActiveX cannot create object

    Hello

    We have a VB6 program running on a machine in our office - running Windows XP Professional. He worked until a few days ago, but now, we get the error:

    Runtime error 429 - component ActiveX cannot create object

    We had a problem with a recently VBA program that was due to an update of Microsoft (KB960715) security and I was wondering if a similar problem could be the cause? Please let me know if you need further details.

    Thank you very much
    Chris

    Hello Chris stammer,

    Thanks for posting on the Microsoft answers Forum.

    If the problem was caused by a windows update, I'll try to see if you can do a system restore and go back before the update has been applied to your system.  Click the number of the KB article and follow the steps in KB.

    306084 KB - how to restore Windows XP to a previous state

    I hope this helps.

    Sincerely,

    Marilyn
    Microsoft Answers Support Engineer
    Visit our Microsoft answers feedback Forum and let us know what you think

  • Create letters with shapes

    Hi, if hundreds of years ago I saw a video with a guy of creating text with shapes. So much as it creates one'm ' using the rectangles and circles. I have recently lost this video and that you do not. I was wondering if someone can show me how do? It sorta looked like this. I use illustrator for about 3 weeks, just try to do that and I can't just.

    Start with circles and lines - don't forget: you can align points so they correspond exactly

    Select these anchor and remove

    Select the tracks that touch and join

    Apply line thick and round caps

    Object > path > offset path and to use agin round caps

    Apply thin line

  • Failed to create index with imdp

    I am trying to import an image with the following command:

    Impdp user/pass DIRECTORY = SCHEMAS DUMPFILE = fump.dmp = originally_schema REMAP_SCHEMA = originally_schema:new_schema TABLE_EXISTS_ACTION = DATA_PUMP_DIR replace old = REMAP_TABLESPACE: new

    I don't know how the dump has been exported.

    Source DB version: 11.2.0.4

    Destination DB version: 11.2.0.1

    Everything works fine until it comes to the creation of index:

    Processing object type SCHEMA_EXPORT/TABLE/INDEX/DOMAIN_INDEX/INDEX

    ORA-39083: Type what INDEX failed to create object error:

    ORA-06550: line 2, column 1:

    PLS-00306: wrong number or types of arguments in the call to "CREATE_INDEX.

    ORA-06550: line 2, column 1:

    PL/SQL: Statement ignored

    Because sql is:

    BEGIN

    ctxsys.driimp.create_index('I_SRC_NAME','SOURCES',User,'ID','2','NAME','1','1020','32','8130','33',, NULL, NULL, 0,'Y','ON COMMIT','12582912',, NULL, null);

    ctxsys.driimp.set_object('DATASTORE','DIRECT_DATASTORE',0);

    ctxsys.driimp.set_object ('TYPE ',' CHAR_)

    Hope you can help me.

    & then you cannot use V11.2.0.4 expdp use impdp since V11.2.0.1

    expdp should include VERSION = 11.2.0.1

  • We use Flash Pro CC creating animations with legends and export to html 5.  We must translate the captions in other languages. How can we download translation of texts in our flash animations so we can use them in html5 using CreateJS?

    We use Flash Pro CC creating animations with legends and export to html 5.  We must translate the captions in other languages. How can we download translation of texts in our flash animations so we can use them in html5 using CreateJS?  I use the Flash on a Mac OSX 10.10.3

    Are you familiar with JavaScript?

    It does not completely answer your question, but the text displayed on the screen from any language (ActionScript/CreateJS / [insert the programming language]) generally all following the same path. Each language has a file stored in some form of key = value style, named through the language and the country of your choice, for example en_US.json

    Any language would allow the user to choose regional settings. The application would then grab the appropriate file and everywhere where the text is needed, the script must be using a (usually global or singleton) variable/service that can get the text of the requested key.

    for example if I wanted a user to have a confirmation of dialogue who said 'are you sure?"with buttons for 'Yes' and 'No', I would have (for me), an Englishman, USA base file en_US.json with these values, for example:

    en_US. JSON example:

    {

    'CONFIRM_YES_NO': ' are you sure?

    'YES': '' Yes. ''

    'NO': 'no '.

    }

    Then you use simply JS/AJAX to read this file. You analyze, or simply JSON decode in an object, or manually, depending on what suits your needs. When you want to display any text, you use the object (variable, maintenance, etc.) you have stored these values.

    for example calling to display function confirm dialogue:

    Nickname... but if you understand...

    and this comes from jQuery UI (see here)

    function confirmDialog() {}

    $(«#dialog-confirmer»).dialog({)

    Title: LocalizationObject ['CONFIRM_YES_NO'],

    buttons:]

    {

    text: LocalizationObject ["YES"],

    Click: function() {/ / do something for 'yes '.

    }

    {

    text: LocalizationObject ["NO"],

    Click: function() {/ / do something to the 'no '.

    }

    ]

    });

    }

    Please consider loosely. 'LocalizationObject' is a variable object or service that returns the appropriate text for the key that you provide. In this case, he provided the key 'CONFIRM_YES_NO', 'YES' and 'NO', which must be on the right answer for this key, localized.

    Again, this is not a manual on how to do it via Flash Pro but it's the general conceptual way you could do it in any language. There are a variety of other ways to do it, but it's a very simple way, as long as you keep your key names at least wake up verbose. A key name such as LocalizationObject ["ABC123"] is not really tell you what the key can be referred. Also nest them contributes greatly, as LocalizationObject ["UI'] ['DIALOGUES'] ['CONFIRM'] ['YES_NO'] = ' are you sure? It just shows I nested the title of the dialog within the user interface, because it is the text that appears in the user interface rather than content. Then inside dialog boxes that may contain a variety of different dialog boxes. Then inside her CONFIRM type of dialogue. Finally, the type is a dialogue YES_NO type (as opposed to OK_CANCEL or JUST_OK, etc.). Whole set makes it easy to understand what the text of reading: UI YES_NO confirm DIALOG boxes.

    I hope that from here you can see that you need to review everywhere you display text on the screen and centralize it in a sort of object (function or variable) of your choice. You must store the external language files to prevent unnecessarily load the other languages as well as an easy to modify Setup.

    The rest is just using basic JavaScript.

    Just be ready for the most difficult challenge. At least for me. The size of the text in several languages is very different, and in some cases requires the loading of special fonts. This can make layout in a very difficult dynamic environment. Always thinking all text how big or small can be in any particular and plan field on this size more and shrink so that to handle this situation correctly.

  • Duplicate a Style object with implemented paragraph in the shape and layout of Rectangle.

    Hey,.

    I'm trying to reproduce an object style, but I don't know if I've set up correctly.

    I have a rectangle object with features and apply effects fx corners, gradient feather, transparency.
    I also have a text frame where there is a paragraph header and format a drop cap for the main text paragraph format.

    Screen Shot 2015-04-08 at 10.12.32 PM.png

    Screen Shot 2015-04-08 at 10.01.53 PM.pngScreen Shot 2015-04-08 at 10.01.38 PM.png

    Rather than go through this process again, I thought create an object style would save time, but how do I group these two frameworks (framework text and rectangle shape) and apply an object style? I am only allowed to apply an object style individual the text block or rectangle object. It also doesn't help when I try to create a rectangular frame around two previous topics.

    In the paragraph style Panel, you need to change your paragraph style "Header."

    in "next style", you have to choose which style you want to be next.

    You can apply your "object Style 1' and tick 'apply the following Style'

  • Can't create objects.

    I seem to be the difficulty to create objects. Using Image path or just rasterize creates an object out of the entire image. I can't select or to isolate anything in the picture as an object.

    agentgroove,

    After the drawing of the Image, you need object > Image Trace > Expand.

    Rasterization is there for that, so you have no vector objects to work with. don't forget to create a copy before you destroy work.

  • Is it possible to change the scale of an object with parallax scrolling in Muse?

    Is it possible to change the scale of an object with parallax scrolling in Muse?

    Hi Cashmoneydonuts,

    You can create an animation for it using edge animate and add it to the Muse.

    The following link might be useful:

    Brighten up the Adobe Muse CC sites with animation effects. Inspired by Adobe Magazine

    Concerning

    Sonam

  • Create "Object Style" by script

    Hello

    My 'Library.indl' file has the "Box1", "Box2". I need to create the object style (with dummy properties) based on library file names.

    If the library has BOX1, BOX2, I need to check my Indesign file has a Style of object with the same name (BOX1, BOX2).

    If an object style is not presented in this particular name (BOX1, BOX2) in Indesign, I create the dummy object style. (The "style object name must match with BOX1, BOX2).

    Is it possible by Indesign script?

    by

    hasvi

    Hi Hasi,

    Use the code below.

    var doc = app.activeDocument;

    Library of var = new File ("C:/Library.indl"); Library /Your. file path

    App.Open (Library);

    assets = app.libraries [0] .assets;

    for (var i = 0; i)<>

    {

    try {}

    doc.objectStyles.add({name:asset[i].name});)

    }

    {catch (e)}

    }

    Kind regards

    Cognet

Maybe you are looking for