What type of object is of class "NumericText" ?

In this thread I asked the Q above.
I can't find any object that I can drop that is of that class. And since I can't create control from the ref, I am left wondering what a "NumericText" object on the FP would be.
Just curious,
Ben
Message Edited by Ben on 03-24-2009 08:47 AM
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction
Solved!
Go to Solution.

The class is applicable to a numeric's "NumericText" property. Not sure about its history or purpose.
Attachments:
Example_VI.png ‏3 KB

Similar Messages

Generics to let user choose what type of object to create

How can I do that? I mean, using JOptionPane I can get user input in a way like:
String str = JOptionPane.showInputDialog("Enter a type of object you want to create");
And assuming that I have generic class Box<T>, how can I assign the type that I got from user to T?
As far as I know T doesn't exist at run time (thanks to erasure), but is there any way to do something similar to what I described?
Thank you.

You can do this with reflection.
String clsName = "java.util.Date";
Object obj = Class.forName(clsName).newInstance();
System.out.println(obj);

Compiler error type of object in for (Class obj : Items) - why?

Hi all,
I'm new to Java generics and am in the process of converting some
legacy code. I have encountered a particular error which I do not
understand the reason for, since I think the compiler has enough
information about the code to work out type information. The following
code shows a test class which demonstrates this error:
import java.util.Collection;
public class Test
    interface Base {}
    static class Impl1 implements Base{}
    public <T extends Base> Collection<T> getCollection(Class<? extends Base> cls)
        return null;
    void someMethod()
        for ( Impl1 obj : getCollection( Impl1.class ))
            // *** compiler complains about the line above ***
            // compiler says:
            // Test.java:22: incompatible types
            // found   : Test.Base
            // required: Test.Impl1
            //        for ( Impl1 obj : getCollection( Impl1.class ))
            //                                        ^
    void someMethod2()
        Collection<Impl1> coln = getCollection(Impl1.class);
        for (Impl1 obj : coln)
            // do something here with obj
}Why should the compiler complain where it does ( the line marked with
asterisks) in someMethod, but does not reject the declaration statement
in someMethod2? I would have assumed both are the same and the
compiler has the same type information at its disposal to determine
the correct type.
Cheers,
Bonny

The Java 5 compiler not only looks at a method's name and arguments, but also at its return value in order to determine whether a method is callable and what type should be infered for its type parameters.
In your example the type parameter T is only used in the declaration of the method's return type. Note that there is no relation between T and the type of the argument cls!
Thus, the compiles needs to know what type of variable the return value will be assigned to.
Hence, someMethod2 can be resolved, whereas in someMethod there is no assignment of the return value. (Rather, an implicit call to Iterable.iterator()).
You can solve this problem by forming a relation between the method's argument, its return type and its type parameter. Just declare the method like this:
public <T extends Base> Collection<T> getCollection(Class<T> cls)
        return null;
    }

Can i know what type of object is stored in Vector?

i have written a program for vector where i am adding elements like
sunday, monday , 3.14, 9,5.56 and i want to sum all elements of type double only double data type numbers. it should not add int number or string ?
import java.util.*;
class VectorBasic
     public static void main(String args[ ])
          Vector v1=new Vector(1);
          Double d1=new Double(3.14);
          v1.addElement(d1);
          v1.addElement("sunday");
          v1.addElement(new Integer(2));
          v1.addElement(new Double(5.56));
          v1.addElement(new Integer(5));
          for (int i=0;i<v1.size();i++ )
          System.out.println(v1.elementAt(i));
}

Questions:
1: Why are you using Vector? You should be using ArrayList in most new code. If you need synchronization (Vector is synchronized), use Collections.synchronizedList(). You don't need synchronization for the code you showed.
2: Why initialize the size of Vector (or ArrayList) as 1? That just makes you have to reallocate the size of the list (done for you by the Vector class) as soon as you add a second element. Why not just use a new Vector() [or, better, a new ArrayList()] with the default size?
3: Why are you mixing type in your Vector in the first place? Is this just a test class to learn how to tell the type of an object?
Comment:
1. You should use Double.valueOf(3.14) and Integer.valueOf(2), instead of calling "new Double(3.14)" and "new Double(2)".
In the future, when posting code, use the code tags to keep it formatted nicely. There's a button for it above the posting box. Select your code, then press that "code" button. It will put code tags around your code. You can also type the tags manually--put one at the beginning of your code, and one at the end:

Vectors with multiple types of objects

Ok, this is what i need. I have a main class, EquationVector, and i have four smaller classes, MathPrimitive, which is abstract and all of the following classes extend, Number which just holds numbers, Operator which takes care of what type it is and what to do, and Variable, which knows its value, its coef and its power. I use the MathPrimitive class because all of the other classes need to have a common getType() method, plus it holds static values for all the possible types. What i need is some sort of storage method that is dynamically resizeable, and can handle multiple types of objects. I tried vector, but it doesnt work, even when i cast. I want to be able to do something to the effect of
myArray.elementAt(index).getOperatorType()
and be able to get the operator type if its an operator, but at the same time be able to do
myArray.elementAt(index).getCoef()
and be able to get the coeficient if its a variable. I'm not sure if this is actually possible, so if anybody has any good ideas i would be really apreciative. Thank you.

Vector will absolutely work, as will ArrayList
You just better make sure you know what kind of objects are at what slots in the vector.
opType = ((MathPrimitive) myArray.elementAt(index)).getOperatorType();
If you don't know what type of object is at a particular slot you can always use
Object o = myArray.elementAt(index);
if (o instanceof MathPrimitive)
else
....

What is CRM object BSPWDBP_HEAD_MAIN?

This object has high dialog response time in our system but I can't determine what type of object this is. There are no notes in service marketplace or SDN regarding this object.

Hi,
I am assuming that you are running CRM 2007 or 2006s?
If yes try to go to transaction BSP_WD_CMPWB and open component BP_HEAD_MAIN. From there try to click the "test" button. This will take you to the CRM WebClient and more specifically to the search screen for accounts. So perhaps the object you are referring to is in fact the search for accounts.
/Anders

What types of sort performed by sort method of Array class ?

I use normal bubble sort and method Array.sort() to sort some given data of an Array and then count the time.But Array.sort() method takes more time then normal bubble sort.
Can anybody tell me what types of sort performed by sort method of Array class?

I'm pretty sure that in eariler versions (1.2, 1.3
maybe?) List.sort's docs said it used quicksort. Or I
might be on crack.You are actually both correct, and wrong :)
From the documentation of the sort methods hasn't changed in 1.2 -> 1.4 (as far as I can notice), and the documentation for sort(Object[]) says (taken from JDK 1.2 docs):
"This sort is guaranteed to be stable: equal elements will not be reordered as a result of the sort.
The sorting algorithm is a modified mergesort (in which the merge is omitted if the highest element in the low sublist is less than the lowest element in the high sublist). This algorithm offers guaranteed n*log(n) performance, and can approach linear performance on nearly sorted lists."
So, how could you be correct? The documentation for e.g. sort(int[]) (and all other primities) says:
"Sorts the specified array of ints into ascending numerical order. The sorting algorithm is a tuned quicksort, adapted from Jon L. Bentley and M. Douglas McIlroy's "Engineering a Sort Function", Software-Practice and Experience, Vol. 23(11) P. 1249-1265 (November 1993). This algorithm offers n*log(n) performance on many data sets that cause other quicksorts to degrade to quadratic performance."
Your memory serves you well :)
/Kaj

What's the difference between batch class type 022 and 023?

Hi Guys,
I find that some of my SAP client only have class 022 and some have 023, but no client has them all. I don't know why it happed.
So what's the difference between batch class type 022 and 023? Which setting decide which class to be used ?
Thanks.

Hi nitin,
Read http://www.sapfans.com/forums/viewtopic.php?t=212819&highlight=022 you will know the difference between 022 and 023 .
Use tcode OMCT you can switch batch level .

What is the diff bet condition class and condition type.

Hello Gurus
What is the diff bet condition class and condition type.
I have seen so many threads on this but not getting the exact usefullness.
Difference between Condition class and Condition Category
What is the difference between condition class and condition category?
Condition class and condition category etc.
As per the knowledge i gained condition class tells the type of the condition ie either price , discount ,taxes etc.
Then please tell me why we require cond category.Please give a business scenario where we can justify it use.

Hi shiva
Difference between Condition Category and Condition Class
Condition Category -
It is the Classification of conditions as per the categories ,Say for example Freight condition types you have the same conditon category
Condition class -
It classifies the condition types as price , discounts , taxes , discount etc
Regards
Srinath

What is the default object of a class

can anyone please tell me what is the default object of a class???????????

Unless you mean the actual instance of Class relating to that class, which is loaded by a classloader when the class is first loaded into memory.

How to create multiple TYPES of objects from one menu?

Q: How can I create a single class to create objects of multiple 'object classes' in a way that is not a huge switch statement?
Explaination:
Let's say that I have an application that I am building, that manages five hundred object types. A properly-built object subclassing tree is created, and I want to be able to create objects of any 'leaf node' of this subclassing tree using a single 'objectCreate()' method in a 'factory object'. The purpos of this method will be to create an instance of the correct object, pass a handle to a few collections for properly sorting and storing these objects in groups.
Usually, one could create a switch in this function, testing for the type of object that the user wants to create from the menu. But in the case of having hundreds of possible object choices, this becomes harder and harder code to maintain (let alone performance).
Any suggestions?

But if my menu has:
1. German Shepard
2. Doberman Pinscher
3. Malamut
4. Persian Long-hair
5. Siamese
6. Tabby
And my object class tree goes:
                              [ Animal ]
             [ Cat ]                              [ Dog ]
[ various breeds ]                         [ various breeds ]How do I code the menu class to respond to the input, so that it runs the correct [breed] object's constructor?
The line:
Animal choice = new xxxxxxxx();
I can't use a variable to replace 'xxxxxxxx' in run-time, but having a ton of choices in code sounds/looks unreasonable.
if (choice == "Doberman Pinscher")
Animal choice = new doberman();
else if (choice == "Tabby")
Animal choice = new tabby();
Do you see what I am trying to avoid? I am not experienced enough to instantly realize how to avoid the latter, and instead, do a single instantiation command for the correct constructor.

How to cast an object to a class known only at runtime

I have a HashMap with key as a class name and value as the instance of that class. When I do a 'get' on it with the class name as the key, what I get back is a generic java.lang.Object. I want to cast this generic object to the class to which it belongs. But I don't know the class at compile time. It would be available only at runtime. And I need to invoke methods on the instance of this specifc class.
I'm not aware of the ways to do it. Could anybody suggest/guide me how to do it? I would really appreciate.
Thanks a lot in advance.

Thanks all for the prompt replies. I am using
reflection and so a generic object is fine, I guess.
But a general question (curiosity) specific to your
comment - extraordinarily generic...
I understand there's definitely some overhead of
reflection. So is it advisable to go for interface
instead of reflection?
Thanks.Arguments for interfaces rather than reflection...
Major benefit at run-time:
Invoking a method using reflection takes more than 20 times as long without using a JIT compiler (using the -Xint option of Java 1.3.0 on WinNT)... Unable to tell with the JIT compiler, since the method used for testing was simple enough to inline - which resulted in an unrealistic 100x speed difference.
The above tests do not include the overhead of exception handling, nor for locating the method to be executed - ie, in both the simple method invocation and reflective method invocations, the exact method was known at compile time and so there is no "locative" logic in these timings.
Major benefit at compile-time:
Compile-time type safety! If you are looking for a method doSomething, and you typo it to doSoemthing, if you are using direct method invocation this will be identified at compile time. If you are using reflection, it will compile successfully and throw a MethodNotFoundException at run time.
Similarly, direct method invocation offers compile-time checking of arguments, result types and expected exceptions, which all need to be dealt with at runtime if using reflection.
Personal and professional recommendation:
If there is any common theme to the objects you're storing in your hashtable, wrap that into an interface that defines a clear way to access expected functionality. This leaves implementations of the interface (The objects you will store in the hashtable) to map the interface methods to the required functionality implementation, in whatever manner they deem appropriate (Hopefully efficiently :-)
If this is feasible, you will find it will produce a result that performs better and is more maintainable. If the interface is designed well, it should also be just as extensible as if you used reflection.

Statement and ResultSet Interface type of Object

Hi,
Can any one explains me where exactly (in which Class) the implementation of the Statement and ResultSet Interface type of Object Instance be created
Regards
Krishna

I dont really understand what you are trying to ask but:
Your JDBC driver has concrete implementations of Statement and Resultset. If you want to know what classes are being used try something like:Connection con = ??;
Statement st = con.createStatement();
ResultSet rs = st.executeQuery( "???" );
System.out.println( "Connection class: " + con.getClass().getName() );
System.out.println( "Statement class: " + st.getClass().getName() );
System.out.println( "ResultSet class: " + rs.getClass().getName() );

What is the use of Generic class in java

hi everyone,
i want to know that
what is the use of Generic class in java ?
regards,
dhruvang

Simplistically...
A method is a block of code that makes some Objects in the block of code abstract (those abstract Objects are the parameters of the method). This allows us to reuse the method passing in different Objects (arguments) each time.
In a similar way, Generics allows us to take a Class and make some of the types in the class abstract. (These types are the type parameters of the class). This allows us to reuse the class, passing in different types each time we use it.
We write type parameters (when we declare) and type arguments (when we use) inside < >.
For example the List class has a Type Parameter which makes the type of the things in the list become abstract.
A List<String> is a list of Strings, it has a method "void add(String)" and a method "String get(int)".
A List<File> is a list of Files, it has a method "void add(File)" and a method "File get(int)".
List is just one class (interface actually but don't worry about that), but we can specify different type arguments which means the methods use this abstract type rather than a fixed concrete type in their declarations.
Why?
You spend a little more effort describing your types (List<String> instead of just List), and as a benefit, you, and anyone else who reads your code, and the compiler (which also reads your code) know more accurately the types of things. Because more detail is known, the compiler is able to tell you when you screw up (as opposed to finding out at runtime). And people understand your code better.
Once you get used to them, its a bit like the difference between black and white TV, and colour TV. When you see code that doesn't specify the type parameters, you just get the feeling that you are missing out on something. When I see an API with List as a return type or argument type, I think "List of what?". When I see List<String>, I know much more about that parameter or return type.
Bruce

JBO-25036: An invalid object operation was invoked on type View Object...

Hi,
Jdev 11.1.1.3 with BC & RC.
HR Schema - Employees & Departments Table.
In EmployeesViewImpl class overriding prepareVOForQuery() for adding dynamic where clause.
       @Override
    public void prepareVOForQuery() {
      DepartmentsViewImpl deptImpl = new DepartmentsViewImpl();
      int deptid = deptImpl.deptID();              //custom method in DepartmentsViewImpl returning deptid based on some condition
      setWhereClause("DEPARTMENT_ID = :bvdeptid");
      defineNamedWhereClauseParam("bvdeptid", null, null);
      setNamedWhereClauseParam("bvdeptid", deptid);
      super.prepareVOForQuery();
       public int deptID(){
      //return "IT_PROG";
      int int_deptid = 0;
      Row[] depts = this.getAllRowsInRange();
      for(int i=0 ; i < depts.length; i++){
        Row row = depts;
String deptname = (String)row.getAttribute("DepartmentName");
if(deptname.equalsIgnoreCase("it")){
Number deptid = (Number)row.getAttribute("DepartmentId");
int_deptid = deptid.intValue();
break;
return int_deptid;
// The error is coming
JBO-25036: An invalid object operation was invoked on type View Object with name DepartmentsViewImpl_2
Can I call a custom method deptID() like above, in EmployeesViewImpl class from DepartmentsViewImpl?
I need to change query based on some condition on page load in real scenario. I used beforePhase() but not giving perfect result.
What is best way to do this, similar to above case. However, providing plain value giving no error.
Thanks.

Hi!
This doesn't work that way:
DepartmentsViewImpl deptImpl = new DepartmentsViewImpl();Take a look at ApplicationModule#findViewObject() if your DepartmentsView is already in your data model, executed, and you want to re-use it.
Otherwise take a look at ApplicationModule#createViewObject().
Besides that, if you want to execute a VO, then call executeQuery() on it, don't rely on other operations like first() or getAllRowsInRange() to implicitly execute it for you.
And: Why not use Number all the way through? Why the conversion to int? It will work in that example, since department ID is only NUMBER( 4 ). What if the ID column was a NUMBER( 22 )? int cannot handle that, not even close, so you should not make it a habit to convert to int.
Sascha

What type of object is of class "NumericText" ?

Similar Messages

Maybe you are looking for