The in-built length variable

The length variable we see in arrays and everywhere is built in some inbuilt class of java.. but where???? i tried to find it but cudnt get to it in any classses// tried searchin in java.lang package... can anyone tell me where the lenght variable is defined in java?????????????????
its urgent plzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzzz

If you expect clear answers, it makes sense to give clear questions.
Well sir thanks alot... not only will i learn about java here but i guess will also get better with my language and typing which was getting destroyed because of chatting sites... anyways i understand the importance of being proffesional as just finished my engineering and now looking for a job desparately... so i hope imporving not only with java but things like proper and clear writing will help my career... thank you sir and about the link you sent me...
I checked that and when from the src.zip folder i opened the java files.. i tired to find that length vairable.. i found a lenght variable in Array.java file in the lang package in reflect folder . but that vairable was a parameter so it that all.. i mean is that the same variable that springs up everywhere??? i mean in the explanation you sent it was written the array file has a public final lenght field but it wasn't there...hope iam clear with what excatally i want to ask.. guidance regarding this will really help me become better and answer questions in the class i go to.. thank you!!!
here is the code i found in java file
public static Object newInstance(Class<?> componentType, int length)
throws NegativeArraySizeException {
return newArray(componentType, length);
Message was edited by:
power-extreme

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Creating a step type "launcher" that would insert the appropriate built-in or custom step type at edit time

Hi everybody,
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However there are classes where I do have both IVI and specific drivers available and I do need to use both in the test sequence.
For example let's say there are two sources of DC power available in the testbench, one being a programmable IVI compliant DC power supply, and the other one composed of fixed "blocks" of DC power supply managed by externals relays and you need to use them both in the test sequence.
What I would like to be able to do in the sequence editor is inserting the appropriate step type at edit time just by selecting the source of power supply (by a ring or enum for eg), and if the first ressource is selected, it inserts IVI step type, and if the second ressource is chosen, it inserts the appropriate custom step type.
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Regards,
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Cyril Bouton
Active LabVIEW Developper
Solved!
Go to Solution.

Hello Cyril,
Here is an idea that could be done:
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Probleme changing the value of a variable in movieclip from my scene

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YESSSS . Thanks you very much Kglad it wotk i put all in a function inside the filmstrip function Tload(theUrl){etc ect}and in the root i call it like this filmstrip.Tload(theUrl);   and it works
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How to get the size/maximum length of an varchar?

Hello,
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Regards,
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Nuerni wrote:
Karthick,
Your solution is interesting. I'm thinking of writing my own function (but it handles table's columns only - no PL/SQL-declared variables of varchar-type)...
It seems there's no Oracle-character-function available returning such numeric values....
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Maybe tell us the whole picture and it would be possible to find other ways of improvement.
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Edited by: Sven W. on Sep 24, 2008 12:42 PM

How to put the column name and variable value in the alert message.

Dear,
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Regards:
Muhammad Nadeem
CHIMERA PVT. LTD.
LAHORE
[email protected]

Hello,
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Length variable in arrays

When we use the neew operator to make an array which method is called by the new operator and the length variable in arrays resides in which class

What?

SAP PP: In BOM how to where to maintain the details like Length, Width and Quantity

Dear All,
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Hi,
You can use two options...
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2. Try to explore the option of variable size item concept during creation of BOM..
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How to increase the charecteristic description length Copa report

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Display the NAME of a variable

What's the solution to display the name of a variable :
For example, if I have :
int iVar = 2;
I just want to display "iVar" and not the contents.
Thanks.

if you need to get the fields names for any class you can use reflection, some like this.
import java.lang.reflect.*;
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System.out.println("decl class = " +
fld.getDeclaringClass());
System.out.println("type
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the result is:
=================
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decl class = class field1
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modifiers = private
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decl class = class field1
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good luck

Snippet: "query" the chart history length programmatically

Would have posted to this thread, but was concerned that the misspelled subject might keep it from being found by future searches.
I have a brute force, inelegant, very mildliy tested workaround for programmatically determining the history length of a waveform chart. In my app, I have a single chart on my gui that is meant to display history from any one of several duplicate test stations. To help accomplish this, I wanted each station to have its own lossy queue whose size is equal to the chart history length. Then, whenever the user chooses to look at a different station's data, I can simply copy the entire contents of the lossy queue over to the chart.
Here's how I "query" the chart history length programmatically:
Note: Some of this feels a little dubious, but it has seemed to give correct results so far. Specifically, several of the XScale properties seem to refer to the graphical rendering of the scale rather than an index # to the history data. Can't guarantee this'll work for all combos of other properties -- I tested with a fairly generic, nearly straight from the box waveform chart.
-Kevin P

Intaris wrote:
Hmm, any reason why you can't just do this?
If you don't modify the Array, it's just copying a pointer, right? Or does this operation automatically make a copy of the data and induce horrendous performance problems?
That doesn't actually do what I need. The "History" data array size works its way up from 0 to History Length as the app runs and data is written. It *is* bounded, but until I fill the chart all the way up, this method won't reveal what that bound is. I need to size up those lossy queues at the beginning of the program, before any data has been written to the chart.
As to the other comments so far:
- I chose charts over graphs to get some of the built-in features of charts for real time monitoring rather than having to manage them myself. Things like zooming the X range, horizontal scrolling to show different segments of the history, that kind of thing.
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What's the difference between global variables and instance variables?

hi im just a biginner,
but what is the difference between these two?
both i declare them above the constructor right.
and both can access by any method in the class but my teacher said
global variables are not permitted in java....
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im confusing.......
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why.....

instance variables are kindof like Global variables. I'm not surprised you are confused.
The difference is not in how they are declared, but rather in how they are used.
There are two different "styles" of programming
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- object oriented programming.
Global variables are a term from Procedural programming.
In this style of programming, you have only one class, and one "main" procedure. You only create one instance of the class, and then "run" it.
There is one thread of control, which goes through various methods/procedures to accomplish your task.
In this style of programming instance variables ARE "global" variables. They are accessible to all methods. There is only one instance of the class, and thus only one instance of the variables.
Global variables are "bad" BECAUSE you can change them in any method you like. Even from places that shouldn't have to. Also if you use the same name as a global variable and a local variable, you can cause great trouble. This can lead to very subtle bugs, as the procedures interact in ways you don't expect.
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I can only think to show a sort of example
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evnafets

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Gul wrote:
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And how i can use syntax highlighting in this forum?

Astraport2012 wrote:
I have to go back to the discussion. The above example works fine when i want to get a single value of the database. But i need to pass an array and get an array, because i want to get at once all the values for all pictures tooltips. I rewrote the proposed Matt PHP-script and it works. However, i can not display the resulting array.
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<picture location="example3.png" tooltip="tooltip for picture #3"/>
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Not able to get the value of ODI Variable when i pass thru Option

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Thanks
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ODI options are not intended for run time parameters. They are like design choices or debugging flags or parameters that can be specified in code template. Previous ETL run time stamp is hardly a design choice.
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The in-built length variable

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