JDeveloper 9i & JSF(Problem with FormTag class) ???

I experiment with JSF Tehnology in JDeveloper 9i, and form my simple jsp page which looks like this:
<HTML>
<HEAD> <title>Hello</title> </HEAD>
<%@ taglib uri="html_basic.tld" prefix="h" %>
<%@ taglib uri="jsf_core.tld" prefix="f" %>
<body bgcolor="white">
<h:form id="testForm" formName="MyTestForm">
</h:form>
</body>
</HTML>
I got this compile error: " Error(8): formName is not a property
of com.sun.faces.taglib.html_basic.FormTag "
I looked in html_basic.tld and tag "formName" is regular declared, but class FormTag realy have no property "formName"... I am new in this tehnology and I need help! Anybody can help me?

Just remove the formName attribute.
erik

Similar Messages

  • Getting problem with DOMImplementation classes method getFeature() method

    hi
    getting problem with DOMImplementation classes method getFeature() method
    Error is cannot find symbol getFeature()
    code snippet is like...
    private void saveXml(Document document, String path) throws IOException {
    DOMImplementation implementation = document.getImplementation();
    DOMImplementationLS implementationLS = (DOMImplementationLS) (implementation.getFeature("LS", "3.0"));
    LSSerializer serializer = implementationLS.createLSSerializer();
    LSOutput output = implementationLS.createLSOutput();
    FileOutputStream stream = new FileOutputStream(path);
    output.setByteStream(stream);
    serializer.write(document, output);
    stream.close();
    problem with getFeature() method

    You are probably using an implementation of DOM which does not implement DOM level-3.

  • Problems with inner classes in JasminXT

    I hava problems with inner classes in JasminXT.
    I wrote:
    ;This is outer class
    .source Outer.j
    .class Outer
    .super SomeSuperClass
    .method public createrInnerClass()V
         .limit stack 10
         .limit locals 10
         ;create a Inner object
         new Outer$Inner
         dup
         invokenonvirtual Outer$Inner/<init>(LOuter;)V
         ;test function must print a Outer class name
         invokevirtual Outer$Inner/testFunction ()V
    .end method
    ;This is inner class
    .source Outer$Inner.j
    .class Outer$Inner
    .super java/lang/Object
    .field final this$0 LOuter;
    ;contructor
    .method pubilc <init>(LOuter;)V
         .limit stack 10
         .limit locals 10
         aload_0
         invokenonvirtual Object/<init>()V
         aload_0
         aload_1
         putfield Inner$Outer/this$0 LOuter;
         return
    .end method
    ;test
    .method public testFunction ()V
         .limit stack 10
         .limit locals 10
         ;get out object
         getstatic java/io/PrintStream/out  java/io/PrintStream;
         aload_0
         invokevirtual java/lang/Object/getClass()java/lang/Class;
         ;now in stack Outer$Inner class
         invokevirtual java/Class/getDeclaringClass()java/lang/Class;
         ;but now in stack null
         invokevirtual java/io/PrintStream/print (Ljava/lang/Object;)V
    .end methodI used dejasmin. Code was equal.
    What I have to do? Why getDeclatingClass () returns null, but in dejasmin code
    it returns Outer class?

    Outer$Inner naming convention is not used by JVM to get declaring class.
    You need to have proper InnerClasses attribute (refer to http://java.sun.com/docs/books/vmspec/2nd-edition/html/ClassFile.doc.html#79996)
    in the generated classes. Did you check using jclasslib or another class file viewer and verified that your .class files have proper InnerClasses attribute?

  • JSF problems with Javascript

    Hi everyone!!
    The situation is this: I have a datable with one of its columns make an h:commanLink, which has two f:params, its actionListener is a function of a ManagedBean. This is JSF, not MyFaces. In IE, When the link is pressed, it shows a javascript error: " 'elements.idVar' is null or it's not an object ", however in Firefox, it works perfectly. I have been looking for the problem and it have to do with this:
    </form><a href="# onclick="clearFormHiddenParams_formResultado('formResultado');document.forms['formResultado'['formResultado:_idcl'].value='formResultado:dtTablaResultados:0:_id10';document.forms['formResultado']['idVar'].value='37';document.forms['formResultado']['idMun'].value='168'; document.forms['formResultado'].submit(); return false;"><span id="formResultado:dtTablaResultados:0:itColumna3" title="AREA COSECHADA EN CULTIVOS PERMANENTES">1,230</span></a></td>
    </tr>
    <tr class="standardTable_Row2">
    <td><span id="formResultado:dtTablaResultados:1:itColumna1" style="text-align:center;" title="C&oacute;digo Municipio">718</span></td>
    <td><a href="javascript:void(0)" onclick="javascript:window.opener.opener.showLink('SASAIMA')"><span id="formResultado:dtTablaResultados:1:itColumna2_l" title="Municipio">SASAIMA</span></a></td>
    <td><form id="formResultado:dtTablaResultados:1:_id9" method="post" action="/ConsultaEstadisticasGeo/resultadoConsulta.jsf" enctype="application/x-www-form-urlencoded">
    <input type="hidden" name="com.sun.faces.VIEW" id="com.sun.faces.VIEW" value="_id39:_id41" /><input type="hidden" name="formResultado:dtTablaResultados:1:_id9" value="formResultado:dtTablaResultados:1:_id9" /><input type="hidden" name="idVar" /><input type="hidden" name="idMun" /><input type="hidden" name="formResultado:_idcl" />
    <script type="text/javascript">
    <!--
    function clearFormHiddenParams_formResultado_dtTablaResultados_1__id9(curFormName) {
    var curForm = document.forms[curFormName];
    curForm.elements['idVar'].value = null;
    curForm.elements['idMun'].value = null;
    curForm.elements['formResultado:_idcl'].value = null;
    //-->
    </script>
    the way JSF manage the params. The error, acdording to the message shonw by IE is in this line: curForm.elements['idVar'].value = null;
    The code of the JSP is this:
    <h:commandLink     actionListener="#{consultaEstadisticasMB.detalleEstadistica}">
         <f:param name="idVar" value="#{consultaEstadisticasMB.idColumna3}" id="idVar" />
         <f:param name="idMun" value="#{registro[0]}" id="idMun" />
         <h:outputText title="#{consultaEstadisticasMB.columna3}" id="itColumna3" value="#{registro[2]}" />
    </h:commandLink>
    Waht can i do? (Not using MyFaces, because I can�t do that)
    Thanks for your answers!!

    I have run into this same problem with javascript and the colon. I am not sure if the colon is a valid character for a javascript identifier (one would think the RI developers would have checked it out though!?!).
    Anyway, my workaround is to search through the Javascript DOM for the widget you want to obtain a reference to, using part of its id. After all, you know its id, you just can't use it as a javascript reference. In your Javascript code, do something like:
        var inputWidgets = document.getElementsByTagName("input");
        var targetInput;
        for(var i = 0; i < inputWidgets.length; i++)
           var inputId = inputWidgets.id;
    if(inputId.indexOf("yourInputId") != -1)
    targetInput = inputWidgets[i];
    break;
    It's a lot of effort to just get a reference to a form widget....but it works (I pasted in the code and changed it a bit, so it might not work as is, but at least it demonstrates the idea).

  • Problem with JFrame class.

    To risolve my problem i need for few diferent frame
    ( for esample in one i put JTextFild that take the user input, in a nother one i need for program output ) . But, th problem is, all my frames using the same object.
    If i construct diferent JFrame window class i have problem that i don't acess in the same object from all the window. And if i dont use a object, i have static acess .
    I risolve the problem with 1 JFrame class with diferent constructors, but i wont a diferent way to risolve my problem, because there are few windows.
    Help me.....

    Make the class that extends JFrame an inner class of the the main class. You can then access all members of the outer class.

  • JDeveloper 10g video problems with Windows Vista

    Hi,
    I'm using JDev 10g 10.1.3.3 over Windows Vista with Aero active. Since I started using Vista, I have always had problems with JDev. First, the fonts in the JDev panels would mess up and the scrolling would not work well. I made some changes in the way JDev uses the JDK, I don't remember exactly what I did, but I think I made the whole JDev environment to use a newer JDK, which is not engouraged/supported by Oracle. Since then, the scrolling problem was solved. But When I run my app, Aero stops working.
    Is there a way to make JDev 10g work perfectly with Vista?
    (No, I'm not willing to migrate to 11g, for several reasons, so I need to stick to 10g for now).
    Thanks!
    Brian
    Edited by: BrianBraun on Nov 12, 2008 7:08 AM

    Try the various tips on this thread:
    Using JDeveloper on Vista - some tips

  • Problems with importing classes in Java

    Hello,
    i have some problems with a simple project.
    The structure is like this:
    web-inf/classes/databeans/loginexistinguserform.java
    web-inf/classes/formactions/loginexistinguseraction.java
    loginexistinguserform.java :
    package databeans;
    import org.apache.struts.action.ActionForm;
    import org.apache.struts.action.ActionErrors;
    import org.apache.struts.action.ActionError;
    import org.apache.struts.action.ActionMapping;
    import javax.servlet.http.HttpServletRequest;
    public class LoginExistingUserForm extends ActionForm
         String userid;
         String password;
         public String getUserid(){return userid;}
         public void setUserid(String newUserid){userid=newUserid;}
         public String getPassword(){return password;}
         public void setPassword(String newPassword) {password=newPassword;}
         public ActionErrors validate(ActionMapping mapping, HttpServletRequest request){
              ActionErrors errors=new ActionErrors();
              if(this.userid==null||this.userid.equals(""))
                   errors.add("user",new ActionError("error.userid.required"));
              if(this.password==null||this.password.equals(""))
                   errors.add("pass",new ActionError("error.password.required"));
              return errors;
    }loginexistinguseraction.java
    package formactions;
    import org.apache.struts.action.Action;
    import org.apache.struts.action.ActionForm;
    import org.apache.struts.action.ActionForward;
    import org.apache.struts.action.ActionMapping;
    import java.io.IOException;
    import javax.servlet.ServletException;
    import javax.servlet.http.HttpServletRequest;
    import javax.servlet.http.HttpServletResponse;
    import databeans.LoginExistingUserForm;
    public class LoginExistingUserAction extends Action
         public ActionForward perform(ActionMapping mapping, ActionForm form, HttpServletRequest request, HttpServletResponse response)
         throws IOException, ServletException
              LoginExistingUserForm loginData=(LoginExistingUserForm)form;
              if(loginData.getUserid().equals("Admin")&&loginData.getPassword().equals("Parola"))
                   return mapping.findForward("successLogin");
              else
                   return mapping.findForward("failureLogin");
    }I can complie succesfully loginexisitinguserform.java but problems appears when i want to compile the second file, loginexistinguseraction.java with command: javac loginexistinguseraction.java
    C:\ApacheGroup\Tomcat\webapps\PersonalWeb\WEB-INF\classes\formactions>javac loginexistinguseraction.java
    loginexistinguseraction.java:10: package databeans does not exist
    import databeans.LoginExistingUserForm;
    ^
    loginexistinguseraction.java:17: cannot find symbol
    symbol : class LoginExistingUserForm
    location: class formactions.LoginExistingUserAction
    LoginExistingUserForm loginData=(LoginExistingUserForm)form;
    ^
    loginexistinguseraction.java:17: cannot find symbol
    symbol : class LoginExistingUserForm
    location: class formactions.LoginExistingUserAction
    LoginExistingUserForm loginData=(LoginExistingUserForm)form;
    ^
    3 errors
    I have the CLASSPATH variable setup tu C:/Sun/Appserver/lib/j2ee.jar
    Can someone help me ? Thank you in advance !

    Thank you very much ! It worked. I'm really new in Jav a programming.
    Now i have encoutered another problem. When i want to login, and enter user name and password i am redirected to a login.do page, instead of Welcome.jsp
    Here is Login.jsp:
    <%@taglib uri="/WEB-INF/struts-html.tld" prefix="html" %>
    <%@page contentType="text/html; charset=ISO-8859-1"%>
    <html>
    <head><title>Login Form</title></head>
    <body>
    <html:errors/>
    <html:form action="/login">
    <table border="0" width="200">
    <tr>
         <td>User Name:</td>
         <td><html:text property="userid" maxlength="13"/></td>
    </tr>
    <tr>
         <td>Password:</td>
         <td><html:password property="password" maxlength="13"/></td>
    </tr>
    </table>
    <br />
    <html:submit value="Login"/>
    </html:form>
    </body>
    </html>and here is struts-config.xml :
    <?xml version="1.0" encoding="ISO-8859-1" ?>
    <!DOCTYPE struts-config PUBLIC
              "-//Apache Software Foundation//DTD Struts Configuration 1.2//EN"
              "http://jakarta.apache.org/struts/dtds/struts-config_1_2.dtd">
    <struts-config>
    <!--========================beans for HTML form data=======================-->
    <form-beans>
         <form-bean name="loginBean" type="databeans.LoginExistingUserForm"/>
    </form-beans>
    <!--========================Action Mappings================================-->
    <action-mappings>
         <action path="/login" type="formactions.LoginExistingUserAction" name="loginBean" input="/Login.jsp" scope="session">
              <forward name="succesLogin" path="/pages/Welcome.jsp" redirect="true"/>
              <forward name="failureLogin" path="/pages/Diverse.jsp" redirect="true"/>
         </action>
    </action-mappings>
        <message-resources parameter="MessageResources" />
    </struts-config>

  • Problems with loading Classes from a Directory of a jar file.

    Hi Guys,
    i have a problem with my programm. It works greatly in my eclipse platform. but there are all classes in my default folder. I want to add a plugin function now. My Abstract classes are in in my default folder and my doughter classes are in my plugin-folder called plugin.
    I look what is in the pluginfolder -> all my doughter classes. but i every time get a Class Cast Exception and an ClassNotFoundException.
    How can i do that ? Current i do it with Class.forName(frames.substring(0,frames[i].indexOf(".class")));
    best regards flo

    http://java.sun.com/j2se/1.3/docs/tooldocs/win32/classpath.html

  • Inheritance problem with parent class calling child class

    I have a problem with inheritance with a parent class calling a child class method. Below is the example pseudocode code and my problem:
    public abstract class A {
        protected void function1 ( ) { }
        protected void function2 () {
             //calls function1();
             function1();
    public abstract class B extends A {
        protected void function1 ()  {
             // do stuff
    public class C extends B {
        protected void function1 ()  {
            // do stuff
            super.function1 ();
    }I have an object instance of class C created and its function2() is invoked.
    My problem is, while in function2(), which belongs to abstract class A and the method call to function 1() is called, the call invokes the function1() of class B. Shouldn't the call invoke function 1() of class C instead? And then function1() of class B will be called after due to the super.function1(). It's not behaving like I thought it would.
    Edited by: crono77 on Jan 10, 2008 8:13 PM

    Nevermind, i found my error :)

  • Problem with loading classes!!!

    I am loading classes using
    // Open File
    InputStream jarFile = new BufferedInputStream(new FileInputStream(
    pluginPath));
    // Get Manifest and properties
    Attributes attrs = new JarInputStream(jarFile).getManifest().
    getMainAttributes();
    jarFile.close();
    // Read Main Class
    String mainClass = attrs.getValue("Protocol-Class");
    // Load all classes from jar file without giving classpath
    URL url = new URL("jar:file:" + pluginPath + "!/");
    JarURLConnection jarConnection = (JarURLConnection) url.openConnection();
    URL[] urls = new URL[] {
    url};
    ClassLoader classLoader = new URLClassLoader(urls);
    // Create new instance of protocol
    Protocol protocol = (Protocol) classLoader.loadClass(mainClass).
    newInstance();
    I am loading classes one by one say a order A, B, C. In my case class c extends class A. So I am loading class A first and later B and finally C. But I am getting exceptions when loading class C that Class A is unknown.The following exception is thrown
    java.lang.NoClassDefFoundError: com/a/A at java.lang.ClassLoader.defineClass0(Native Method) at java.lang.ClassLoader.defineClass(ClassLoader.java:537)
    Please give me a solution to make it run.

    You create a new class loader for each class. The class loaders are independent, and so the class hierarchies they load are independent. Class A loader by classLoaderOne doesn't see class B loader by classLoaderTwo - they are loaded into their own sandboxes.
    Either load everything with one class loader or create the class loaders in a hierarchy. To create a hierarchy use the class loader constructor that takes a parent class loader as a parameter. One class loader may be easier because then you don't need to worry about loading order.

  • Problem with BundleUtils class in Oracle JDeveloper 11g Cookbook

    Hi All,
    While practising Using a custom exception class, in the first chapter of Oracle Jdeveloper 11g cookbook, author states:
    Note that in the Using a generic backing bean actions framework recipe
    in this chapter, we refactored the code in getMessage() to a reusable
    BundleUtils.loadMessage() method. Consequently, we changed the
    ExtJboException getMessage() in that recipe to the following:
    +public String getMessage() {+
    return BundleUtils.loadMessage(this.getErrorCode(),
    this.getErrorParameters());
    +}+
    Whereas no details of BundleUtils class is given in Using a generic backing bean actions framework recipe, which is giving compilation errors for CommonActions class.
    Any help will be greatly appreciated.
    Thanks in advance
    Best Regards
    Bilal

    Bilal,
    you are missing some points here. This is the jdev and adf forum. We don't have access to the code you mention. So we can't help you as long as you don't post the code here (which I doubt you are allowed to).
    Next, if you read https://forums.oracle.com/forums/ann.jspa?annID=56 you should have noticed that without giving at least your jdev version, help is hart to get.
    As said in the other thread, you should drop Nick a note so he can clarify this issue.
    Timo

  • Problems with String[] Class Object

    Hi guys,
    I'm writing a web server who should invoke a method of a class when asked by a client.
    My problem is that if the method that should be invoked has a String[] parameter the web server is unable to invoke it and throws a java.lang.IllegalArgumentException: argument type mismatch.
    Useful pieces of code to understand are the following:
    //create the Class[] to pass as parameter to the getMethod method
    Class[] paramType = {String[].class};
    //find the class "className" and create a new instance
    Class c = Class.forName(className);
    Object obj = c.newInstance();
    //the getMethod should find in the class c the method called nameMeth
    // having paramType (i.e. String[]) as parameter type...
    Method theMethod = c.getMethod(nameMeth, paramType);
    //here's the problematic call!!
    theMethod.invoke(obj, params);I've noted that System.out.println(theMethod); prints the signature of the method with the parameter type java.lang.String[].
    System.out.println(paramType[0]); instead prints [Ljava.lang.String;
    I know that [L means that it is an array, so why do you think that I'm having an argument type mismatch?
    Thank you                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                                       

    I had no problems making that work.import java.lang.reflect.Method;
    public final class StringArray {
        public static final String CLASSNAME = "StringArray";
        public static final String METHODNAME = "myMethod";
        public static final String[] sa = { "a", "b"};
        // automatic no-args constructor
        public final void myMethod(String[] sa) {
            for(int i=0;i<sa.length;++i) {
                System.out.println(sa);
    public static final void main(String[] arg) throws Exception {
    //create the Class[] to pass as parameter to the getMethod method
    Object[] params = { sa };
    Class[] paramType = {sa.getClass()};
    //find the class "className" and create a new instance
    Class c = Class.forName(CLASSNAME);
    Object obj = c.newInstance();
    //the getMethod should find in the class c the method called nameMeth
    // having paramType (i.e. String[]) as parameter type...
    Method theMethod = c.getMethod(METHODNAME, paramType);
    //here's the problematic call!!
    theMethod.invoke(obj, params);

  • Problems with Adler32 class in JDK 1.5 (not tried 1.6)

    When I use the java.util.zip.Adler32-class for generating Adler32-checksums, I found a couple of strange problems. When the total filesize (generating checksums of several files with the same checksum-object, using reset() in between) is 31999 bytes or greater, it gives pseudorandom output for the first file that exceeds the 31999 bytes. By running the test-program several times in a row, it seems like the output changes every second, as if random data was generated with the second counter as a seed. All the other checksums seem correct, and they do not change. A workaround that works for a series of only small files is to create a new Adler32-object for every file that needs its checksum generated, but that proves itself insufficient when a single file exceeds 31998 bytes of size (31999 or above).
    I've tried different inputstreams and various methods of using the update(xx)-functions of the Adler32, but I always get the same results. Is this a known bug (Note: JDK 1.5, not 1.6)? Or am I doing something obviously wrong? Example source code can be provided if necessary.

    R,
    I'm disappointed to see that you haven't received any replies to this. I am experiencing a very similar problem. What I have noticed is that the problem occurs when the combo-box is forced to be heavy-weight (meaning it has to draw itself outside the bounds of the window). In those cases, I can never pick a different value from the combo-box in the table. The exact same app run under 1.3.1 does not have any problems. Further, combo-boxes not in table views do not seem to have any problems even when they are heavy-weight.
    Paul

  • Problems with Embedded classes mapping

    Hi,
    I'm experiencing problems for table generation with the following case:
    a class declares two fields; one of them typed as a subclass of the other; both fields annotated with @Embedded; the subclass uses the annotation @AttributeOverride to avoid column names duplication.
    When the tables are generated, one of the field (the most specialized one) is simply omitted by the JPA implementation...
    To illustrate my problem, here is an example:
    @Entity
    public class Bar implements Serializable {
         @Embedded
         protected Foo foo = null;
         @Id
         @GeneratedValue(strategy=GenerationType.SEQUENCE)
         protected long id = -1;
         @Embedded
         protected SubFoo subFoo = null;
         public Bar() {
                    super();
            // getters & setters
    @Embeddable
    public class Foo implements Serializable {
         @Column
         protected String bar = null;
         @Column
         protected String foo = null;
         public Foo() {
              super();
            // getters & setters
    @Embeddable
    @AttributeOverrides({
         @AttributeOverride(name="bar", column=@Column(name="subbar")),
         @AttributeOverride(name="foo", column=@Column(name="subfoo"))
    public class SubFoo extends Foo {
         public SubFoo() {
                    super();
    }The generated table BAR contains only 3 columns: ID, FOO, BAR...
    ...and what I expect is two additionnal columns named SUBFOO & SUBBAR!
    Can someone tell me: if I definitely need to go back to school (I'm obviously not an EJB expert), or how to make it work as I expect...?
    Thanks
    -Jerome

    I found the note in the EJB specs that clearly states that my issue has no solution at this time:
    "Support for collections of embedded objects and for the polymorphism and inheritance of embeddable classes will be required in a future release of this specification."
    EJB 3.0 specs - final release - persistence, page 23, note 10 in section 2.1.5

  • Problem with local class, static private attribute and public method

    Hello SDN,
    Consider the following situation:
    1) I have defined a LOCAL class airplane.
    2) This class has a private static attribute "type table of ref to" airplane (array of airplanes)
    3) A public method should return the private static table attribute
    Problems:
    a) The table cannot be given as an EXPORTING parameter in the method because TYPE TABLE OF... is not supported and I get syntax errors. I also cannot define a dictionary table type because it is a local class.
    b) The table cannot be given as a TABLES parameter in the method because TABLES is not supported in the OO context.
    c) The table cannot be given as an EXPORTING parameter in the method defined as LIKE myStaticAttribute because my method is PUBLIC and my attribute is PRIVATE. ABAP syntax requires that all PUBLIC statements are defined before PRIVATE ones, therefore it cannot find the attribute to reference to with LIKE.
    I see only 2 solutions:
    a) Never ever use local classes and always use global classes so that I might define a dictionary table type of my class which I can then use in my class.
    b) Make the attribute public, but this goes against OO principles, and isn't really an option.
    Am I missing anything here, or is this simply overlooked so far?

    Hello Niels
    Since your class is local and, thus, only know to the "surrounding" application is does not really make sense to make it public to any other application.
    However, if you require to store instances of your local classes in internal tables simply use the most generic reference type possible, i.e. <b>OBJECT</b>.
    The following sample report shows how to do that. Furthermore, I believe it also shows that there are <u><b>no </b></u>serious inconsistency in the ABAP language.
    *& Report  ZUS_SDN_LOCAL_CLASS
    REPORT  zus_sdn_local_class.
    " NOTE: SWF_UTL_OBJECT_TAB is a table type having reference type OBJECT
    *       CLASS lcl_airplane DEFINITION
    CLASS lcl_airplane DEFINITION.
      PUBLIC SECTION.
        DATA:    md_counter(3)             TYPE n.
        METHODS: constructor,
                 get_instances
                   RETURNING
                     value(rt_instances)   TYPE swf_utl_object_tab.
      PRIVATE SECTION.
        CLASS-DATA: mt_instances    TYPE swf_utl_object_tab.
    ENDCLASS.                    "lcl_airplane DEFINITION
    *       CLASS lcl_airplane IMPLEMENTATION
    CLASS lcl_airplane IMPLEMENTATION.
      METHOD constructor.
        APPEND me TO mt_instances.
        DESCRIBE TABLE mt_instances.
        md_counter = syst-tfill.
      ENDMETHOD.                    "constructor
      METHOD get_instances.
        rt_instances = mt_instances.
      ENDMETHOD.                    "get_instance
    ENDCLASS.                    "lcl_airplane IMPLEMENTATION
    DATA:
      gt_instances      TYPE swf_utl_object_tab,
      go_object         TYPE REF TO object,
      go_airplane       TYPE REF TO lcl_airplane.
    START-OF-SELECTION.
      " Create a few airplane instance
      DO 5 TIMES.
        CREATE OBJECT go_airplane.
      ENDDO.
      gt_instances = go_airplane->get_instances( ).
      CLEAR: go_airplane.
      LOOP AT gt_instances INTO go_object.
        go_airplane ?= go_object.
        WRITE: / 'Airplane =', go_airplane->md_counter.
      ENDLOOP.
    END-OF-SELECTION.
    Regards
      Uwe<u></u>

Maybe you are looking for