How is the length of a string calculated in Java?  and JavaScript?

Hi all,
Do any of you know how the length of a string is being calculated in Java and JavaScript? For example, a regular char is just counted as 1 char, but sometimes other chars such as CR, LF, and CR LF are counted as two. I know there are differences in the way Java and JavaScript calculate the length of a string, but I can't find any sort of "rules" on those anywhere online.
Thanks,
Yim

What's Unicode 4 got to do with it? 1 characteris 1
character is 1 character.
strings now contain (and Java chars also) is
UTF-16 code units rather than Unicode characters
or
code points. Unicode characters outside the BMPare
encoded in Java as two or more code units. So it would seem that in some cases, a single
"character" on the screen, will require two charsto
represent it.So... you're saying that String.length() doesn't
account for that? That sux. I don't know. I'm just making infrerences (==WAGs) based on what DrClap said.
I assume it would return the number of chars in the array, rather than the number of symbols (glyphs?) this translates into. But I might have it bass ackwards.

Similar Messages

  • How to calculate the length of a string

    Hi everyone,
    A simple question. How to calculate the length of a string?
    Thanks!

    Hi Wuyia Nata,
      As everyone has suggested you search the forum before posting a question, i guess for basic questions u never have to post a question, you will get the answer in your search. Anyways see the code below for string lenght.
    Data:
      w_string type string,
      w_lenght type i.
    w_string = 'vhdskbvsdkbvdsvnsknvs'.
    w_lenght = strlen( w_string ).
    Write:
      w_lenght.
    With luck,
    Pritam.

  • Checking the length of a string in sapscript

    Is there a way to check the length of a string in sapscript?
    What I want to do is, if the length of two strings is greater than a certain ammount, truncate the string.
    But I don't know if is possible inside the sapscript

    Never mind, I did it with a perform instead

  • How will the new OSX Mavericks affect applications already installed and using Mountain Lion?

    How will the new OSX Mavericks affect applications already installed and using Mountain Lion?

    If you're asking about compatibility, that would be something you would need to ask of the app developers, though most apps compatible with Mountain Lion should be compatible with Mavericks. You can also consult the tables here:
    http://roaringapps.com/apps
    though that information comes from user reports and so should not be considered authoritative.
    If you're asking whether installing Mavericks will delete your apps, no, it won't, though a good backup is always highly recommended.
    Regards.

  • What's the difference between java and Javascript?

    I a new programer, I am getting Java down. Now I want to add some java scripts to my site. Is there any difference between java and Javascript? Can I use the Java API site refference and classes? Thanks..

    Java is a programming language, Javascript is more for web pages. It is used to add interactivity to your web pages. 2 different languages.
    check out www.java.sun.com for Sun Java stuff.
    Lynn

  • How do i find the length of a string??

    trying to use the substring, I know the beginIndex (in my case 10), but the string will vary in size and so i need to find the last character and set it as the endIndex, how do i do this?
    public String substring(int beginIndex,
    int endIndex)Returns a new string that is a substring of this string. The substring begins at the specified beginIndex and extends to the character at index endIndex - 1. Thus the length of the substring is endIndex-beginIndex.
    Examples:
    "hamburger".substring(4, 8) returns "urge"
    "smiles".substring(1, 5) returns "mile"
    Parameters:
    beginIndex - the beginning index, inclusive.
    endIndex - the ending index, exclusive.
    Returns:
    the specified substring.

    Hi
    To substring the string where u know the begin index and want to extract till the end use the following function from the String class of the java.lang package
    String substring(int beginindex);
    String test = "Hello";
    String xx = test.substring(1);
    The Value stored in xx will be ello
    This is in case u need till the end of the String
    If wanna skip the last character u can
    use
    String substring(int beginindex,int endindex);
    String test = "Hello";
    String xx = test.substring(1,test.length()-1);
    The Value stored in xx will be ell

  • How can i get the length of a string with Simplified Chinese?

    when i use eventwriter to add content to a xmldocument,there are some chinese simplified string in it,i use String.length() for the length ,but it is not correct~how can i get the right length for eventwriter?

    Below is a simple patch for this problem. Using this patch you need to pass 0 as the length argument for any XmlEventWriter interfaces that take a string length.
    Regards,
    George
    diff -c dbxml-2.3.10/dbxml/src/dbxml/nodeStore/NsEventWriter.cpp dbxml-2.3.10.patch/dbxml/src/dbxml/nodeStore/NsEventWriter.cpp
    *** dbxml-2.3.10/dbxml/src/dbxml/nodeStore/NsEventWriter.cpp    Fri Nov  3 12:26:11 2006
    --- dbxml-2.3.10.patch/dbxml/src/dbxml/nodeStore/NsEventWriter.cpp      Thu Mar 15 13:58:13 2007
    *** 234,239 ****
    --- 234,241 ----
            CHECK_NULL(text);
            CHECK_SUCCESS();
    +       if (!length)
    +               length = ::strlen((const char *)text);
            if (!_current)
                    throwBadWrite("writeText: requires writeStartDocument");
            try {
    *** 413,418 ****
    --- 415,422 ----
            CHECK_NULL(dtd);
            CHECK_SUCCESS();
    +       if (!length)
    +               length = ::strlen((const char *)dtd);
            if (_current) {
                    if (!_current->isDoc())
                            throwBadWrite("writeDTD: must occur before content");
    diff -c dbxml-2.3.10/dbxml/src/dbxml/nodeStore/NsWriter.cpp dbxml-2.3.10.patch/dbxml/src/dbxml/nodeStore/NsWriter.cpp
    *** dbxml-2.3.10/dbxml/src/dbxml/nodeStore/NsWriter.cpp Tue Jan  2 16:01:14 2007
    --- dbxml-2.3.10.patch/dbxml/src/dbxml/nodeStore/NsWriter.cpp   Thu Mar 15 13:59:25 2007
    *** 326,331 ****
    --- 326,333 ----
                    needsEscape = false;
            else
                    needsEscape = true;
    +       if (!length)
    +               length = ::strlen((const char *)chars);
            writeTextWithEscape(type, chars, length, needsEscape);
    *** 336,341 ****
    --- 338,345 ----
                                  bool needsEscape)
            if(_entCount == 0) {
    +               if (!len)
    +                       len = ::strlen((const char *)chars);
                    if ((type == XmlEventReader::Characters) ||
                        (type == XmlEventReader::Whitespace)) {
                            char *buf = 0;
    *** 381,386 ****
    --- 385,392 ----
      NsWriter::writeDTD(const unsigned char *data, int len)
            if(_entCount == 0) {
    +               if (!len)
    +                       len = ::strlen((const char *)data);
                    _stream->write(data, len);
      }

  • Finding the length of a string

    hi im pretty new to all this,
    I am adding a part to my very basic program where the user can type "y" or "n" after they are being asked if they want to continue, I have been able to do this ok but im trying to make the program as air-tight as possible and i'm having troubble with the error checking.
    I have told the program what to do next based on the first character the user has typed (character 0), I would like my prorgam to prevent continuation if more than one character was entered into the string. At present it still recognises ydr (example) as a valid entry, is there anyway i can detect if there is more than one character in the sting? by doing so i'll be able to throw back an error to the user.
    do
      System.out.println("Would you like to continue (y/n)");
      System.out.println("");
      tmpans = scan.nextLine();
          if (tmpans.length > 1)
          //i know the above method of detecting the length dosn't work with strings, is there an alternative?
            exchar = true;
            System.out.println("You have entered too many characters");
          else
            exchar = false;
          while (exchar);
          if (tmpans.charAt(0) == 'y')
    ... etc

    String.getLength()Errr... String.length() ?Ya right. Whatever. lol
    It's still early in the day for me

  • Find the length of a string in pixels

    Hello all,
    Wondering if there's a way in PowerShell to find the length of a given string in pixels?

    That would depend on the font used to draw it, including size, bold / italic, etc.  Assuming you know those things, there's a TextRenderer.MeasureText method in the Windows Forms library:
    $string = 'This is my string. There are many like it, but this one is mine.'
    $font = New-Object System.Drawing.Font('Arial', 12, [System.Drawing.FontStyle]'Bold, Italic')
    $size = [System.Windows.Forms.TextRenderer]::MeasureText($string, $font)
    $size.Width

  • How changing the criterion for an access query in java?

    Hi @ all
    I would like to change a criterion for an access-query in java. I know how to run a access-query in java. How can I change the criterion in my access query in java without running the query it selfs? Can anybody help me?
    Thx
    Dario

    I would like to change a criterion for an
    access-query in java. I know how to run a
    access-query in java. How can I change the criterion
    in my access query in java without running the query
    it selfs? Can anybody help me?
    You can't.
    The database processes the query and then returns the result to you. Thus to change the query you must run the query again.
    You can of course add code do do the same thing. But unless it is very simple it is going to take a lot of code and might even be slower than doing the database call.

  • How is the XMP workflow supposed to work between CS6 and LR4.1

    Can somebody please enlighten me ?
    I have a raw file in Lightroom, xmp files turned on.
    I open the file as a smart object in Photoshop.
    Back in Lightroom I do some edits, and to be sure, I save the edits back to the XMP.
    Back in Photoshop, no matter what I try, my edits are not picked up. I tried opening the smart object etc...but ACR does not pick up the edits I just made in Lightroom (even when the XMP file is up to date).
    If I resubmit the edited image from Lightroom, my edits are picked up, but this can't be the way it's supposed to work, can it ? What good is a smart object if you need to resubmit it each time...
    Isn't the XMP workflow supposed to be seamless between adobe applications, picking up any edit, no matter where the edit is made (from acr to lightroom and vice versa) ?
    I'm probably missing something, but would appreciate some help.

    Taking a little distance and looking at it from that angle, I can understand why it works the way it does now.
    Still, I feel there are some missed opportunities here.
    Compared to working between indesign and photoshop, when I have an indesign layout and I later edit the placed photoshop document, Indesign gives me a warning that my version is changed and I can update it to reflect the latest state.
    A similar thing could be done here inside photoshop "update to latest Lightroom edits" or something similar which could be totally optional for the end user to use or not.
    My confusion was mostly caused by the XMP files, it stuck in my head that these were external files holding all knowledge and no matter which Adobe program you used, it would work with those same xmp files... but I understood wrong apparently.
    I still have a lot to learn, thanks for all the answers, it is very helpfull.

  • How to avoid validation of input items within af table and javascript

    Hi all,
    I developed a form which includes table and commandButton. Some input items are required. I want them to validate while just button pressed.
    And everything was ok, this scenario was working well. But when table presents only one row, selecting row does not work. See alsa plz: Table row selection --> might be 9th post
    I applied to my jsff the solution which is told in above link. It works previous issue but this time, javascript caused another problem that is inconsistent validation. As i understood java script overrides af table immediate="true" property. plz see : http://www4.picturepush.com/photo/a/11897217/640/11897217.png
    How can i resolve that? Any suggestion?
    Plz help me
    Thanks in advance
    <?xml version='1.0' encoding='UTF-8'?>
    <jsp:root xmlns:jsp="http://java.sun.com/JSP/Page" version="2.1"
    xmlns:af="http://xmlns.oracle.com/adf/faces/rich"
    xmlns:trh="http://myfaces.apache.org/trinidad/html"
    xmlns:f="http://java.sun.com/jsf/core">
    <trh:script>
    function tableLoad(event)
    AdfCustomEvent.queue(event.getSource(), "refreshTables",
    true);
    event.cancel();
    </trh:script>
    <af:table var="row" rowBandingInterval="1" id="entityT"
    value="#{pageFlowScope.incomingPaperworkBean.baseRowCollection}"
    partialTriggers="::cb_incPaperDef_commit ::cb_incPaperDef_filter"
    rowSelection="single" columnBandingInterval="0"
    disableColumnReordering="true" columnStretching="column:c3"
    styleClass="AFStretchWidth" autoHeightRows="20"
    contentDelivery="immediate" immediate="true"
    binding="#{pageFlowScope.incomingPaperworkBean.richTable}">
    <af:clientListener method="tableLoad" type="click"/>
    <af:serverListener type="refreshTables"
    method="#{pageFlowScope.incomingPaperworkBean.refreshTables}"/>
    <af:column id="c5" width="105">
    <af:inputText id="registrationText"
    value="#{row.baseEntity.registrationNumber.registrationNumber}"
    required="true" readOnly="true" autoSubmit="true"
    disabled="true"/>
    <f:facet name="header">
    <af:panelGroupLayout id="panelGroupLayout1" layout="vertical">
    <af:inputText id="filterRegistrationNumber"
    value="#{pageFlowScope.incomingPaperworkBean.filterTemplate.incomingPaperwork.registrationNumber.registrationNumber}"
    simple="true" autoSubmit="true"/>
    <af:spacer width="10" height="10" id="spacer1"/>
    <af:outputText value="Kayit Numarasi" id="outputText6"/>
    </af:panelGroupLayout>
    </f:facet>
    </af:column>
    Edited by: webyildirim on 07.Oca.2013 06:08

    I guess you want the table header skin selector listing. [http://download.oracle.com/docs/cd/E15523_01/apirefs.1111/e15862/toc.htm|http://download.oracle.com/docs/cd/E15523_01/apirefs.1111/e15862/toc.htm]
    search on af:table
    I only see one mention of a table header though, so maybe this is the problem.
    Have you looked at the html that is output (with Firebug) perhaps and seen what sort of style classes are associated with your table component? in 11g it seems that there are more human-readable style classes that you can guess at by looking at the html source.
    Good luck

  • How can I get all the values of a String array profile property using javascript?

    I am trying to build functionality into our site that records all products added to the basket against a user's profile.
    I have so far been able to store the product codes against the profile as a property using Ajax:
           var dataString = ":formid=addProduct&:formstart=/apps/thread/templates/page_product/jcr:content/par/produc t/formstart&:redirect=/content/thread/en/user/cart.html&productId=151515:profile="+profile ;
                         $.ajax({ 
                type: "POST", 
                url: "/content/women/evening/dresses/l-k-bennett-davinadress.html", 
                data: dataString, 
                success: function(data) { 
    In this example I have hardcoded a product ID of 151515.
    In order to save the property as a multi string field you simply replace &productId=151515 with &productId=151515&productId=131313&productId=141414 or as many extra values as you want to build into that string. This stores a productId property against a user profile.
    The issue comes from calling that data back. Using var value = CQ_Analytics.ProfileDataMgr.getProperty("productId") I can get the first value of this array (or the single value if only one is stored).
    However there does not seem to be a way to get any of the other stored values in the array using getProperty. Does anyone know how I can achieve this?

    Hi,
    Don't think that's possible. Even if it were, you wouldn't be able to use/display BOOLEAN type in SQL.
    If you just aim to see what they are, you could do something like this
    select text
      from all_source
    where owner = 'SYS'
       and name = 'DBMS_DB_VERSION'
       and type = 'PACKAGE';Or even
    select dbms_metadata.get_ddl('PACKAGE', 'DBMS_DB_VERSION', 'SYS') from dual;My version is:
    SQL> select * from v$version where rownum = 1;
    BANNER                                                         
    Oracle Database 10g Enterprise Edition Release 10.2.0.4.0 - 64bi
    1 row selectedIn 11g you also have [PL/SCOPE|http://download.oracle.com/docs/cd/E11882_01/appdev.112/e10471/adfns_plscope.htm#ADFNS02203] which might help you even more.
    Regards
    Peter

  • How to find length of a string in JSF using EL expressions.

    I am doing it as below for finding string length
    <c:set var="test" value="#{myPageBean.myMethod.length()}" />
    While evaluating the above expression,it will call getMyMethod() which will return a String. On that it will call length().
    But it this throwing parsing error,
    Is it different in JSF?..Pls help.

    BabuKhan wrote:
    I have imported the taglib in th below 3 ways and tried
    1. <anyxmlelement xmlns:fn="http://java.sun.com/jsp/jstl/functions" />
    2. <anyxmlelement xmlns:fn="http://java.sun.com/jstl/functions" />
    3. <anyxmlelement xmlns:fn="http://java.sun.com/jsf/functions" />
    Literally? Do you understand the meaning of "anyxmlelement" ?

  • How to search for a pattern string in entire registry and delete all the keys and subkeys that contain the pattern (C# or VB)?

    I want to search for a pattern string in the entire registry and need to delete all the keys and sub-keys that contain the pattern. How can I implement this in VB Script or C#? Appreciate if you can give some sample examples. Now every time, I am manually
    searching for the pattern in registry and deleting one by one.
    Thanks Prasad

    There is no built in way to do this. You'll end up having to enumerate all keys and values in the entire registry and comparing each one for a pattern using Regex or similar.  This is going to be really slow but there isn't much else you can do about
    it (other than parallelize the enumeration).  Also note that you won't have permissions to all keys for read and/or write access so you'll need to skip over those using exception handling.
    Michael Taylor
    http://blogs.msmvps.com/p3net

Maybe you are looking for

  • Changing the size of images displayed when a thumbnail is clicked

    In an Aperture gallery, how do I change the size an image is displayed when a thumbnail is clicked. There are sliders for changing the size of the thumbnail; I can't find an adjustment anywhere for the size an image is displayed when the curved arrow

  • How to delete original repository and use new repository

    Hello, I installed GRID 10204 and I selected to create the repository during the grid installation process. The grid 10204 installed a database repository version 10104. I created a 10201 database and patched it to 10204. Now I want to use this 10204

  • Why am I asked for authorization

    While syncing my Mini today I got a notice that one song wouldn't be downloaded because the computer I was on was not authorized to play the song. I bought the album with that song on the very computer I was using! What's going on? Thanks Sheldon

  • Callers able to hear ringtone

    Has anyone received any feedback from someone calling them and was able to hear their iPhone ringe tone? I keep changing my tones and everytime someone calls they know what it is. Is this intentional or a network issue? I didn't have this happening w

  • GI and GR FI Entries Generated from the background Differ

    Dear Experts, I have tried searching answers from the net regarding my concern but found no luck. The scenario is the FI entries generated during PGR differs from  the FI entries generated during PGI. The business is using moving average price (MAP)