Conditional operator and nulltype

hi,
i have a little problem, it's actually not really a problem, im just curious. i have the following testclass
public class Test{
public static void main(String[] args) {
Double a = false? 1.00: (Double)null; // nullpointer (A)
Double b = false? 1.00: null; // works (B)
}when line (A) is uncommented a NullPointerException is thrown and i have no idea why.
when i comment out line (A), line (B) works. because the type of the conditional operator is of the other if one of them is NullType.
so not really a problem because it's better to use (B) but i still want to know why (A) doesn't work.
Edited by: creichlin on Oct 27, 2008 12:15 PM

ouch, i am just to stupid. i forgot autoboxing, the NullType is cast to a null Double, then it's autoboxed to a double and then to a Double again.

Similar Messages

What is the conditional operator for AND, OR .....?

what is the conditional operator for AND, OR .....? in ABAP language...
AND, OR .. & is not accepting or recognising.
Is these feature available in abap ??? if yes, how to use?
thanks...
shiva

Hi,
Conditional operator for AND and OR are same AND and OR.
A logical expression consists of comparisons (see expressions 1 to 4 below) and/or selection criteria checks (expression 5) using the operators AND, OR and NOT , as well as the parentheses " (" and ")".
The individual operators, parentheses, values and fields must be separated by blanks:
Incorrect:
f1 = f2 AND (f3 = f4).
Correct:
f1 = f2 AND ( f3 = f4 ).
NOT takes priority over AND, while AND in turn takes priority over OR:
NOT f1 = f2 OR f3 = f4 AND f5 = f6
thus corresponds to
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All data objects that can be converted among each other can be used as operands for logical expressions.
Check if u are using the AND or OR operator this way.
IF f1 AND f2.
ENDIF.
In this case it will throw error. Here it act as relational operator.
Regards,
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Powershell equivalent of a conditional operator?

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I was wondering if there was a way to write this such that I don't have the if...then...else. I tried to do this:
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$returnHash.IsBatchValid = $discoveredIssues.Length -gt 0
Oh nice. Didn't quite work. Powershell ISE complained:
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which I suppose would have been obvious had I bothered to pay any attention to what I was doing. Always pays to have someone else put eyes on something. thanks mjolinor.
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Conditional operator question?

Hello,
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char volatile *u;
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if(!(strncmp("*", u, 1))){
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u = &ProgString_[i];
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else {
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else
return FALSE;
void UPC_SYSZ_Parse(){
unsigned char volatile iOCntr = 0;
unsigned long volatile i;
for(i=0; i<200; i++){
(UPC_SYSZ_EndOfTable(i))?(break):(continue); //<<<<< Invalid expression ??
I would of used the following compact line:
(UPC_SYSZ_EndOfTable(i))?(break):(continue); //<<<<< Invalid expression ??
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If detected, I would break out of the for loop, if not then I would continue.
Is it possible to do it this way?
thanks for all help!
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Think of it along the lines of each of the operands of the ternary operator must produce a value (which of course break and continue being statements cannot do).
Based on your brief example here is what I would do
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if (UPC_SYSZ_EndOfTable(i)) break;
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hi
gurus i am very much confused with this
alternative condition type and base value plzz clear me from this confusion
give me with realtime example and tel me in simple way
they will fully rewarded. and also a gud help to me
thanks
srinivask.

Hi
hope it is Alternative Calculation Type and Alternative Condition Base value
if so pls refer below
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<b>
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Hi All,
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.. Apart from that, there is no need for your original long list of "if .. else". For a list of possible inputs, you should consider something like this:
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Conditional Operator for else if?

I used the google compiler on one of my scripts. It worked fine except I am getting hung up on some of the conditional statements it made. Originally I had a series of if else if statements. When changed to Conditional Operator it changes the fuctionality of it. Here we go if anyone can help I will take any tips.
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Google version:
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Brett.

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NEED HELP:To Parse Conditional Operator Within An Expression.

Hi there:
I'm having some difficulties to parse some conditoional operator. My requirements is:
Constants value: int a=1,b=2,c=3
Input/Given value: 2
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Thanks a million,
selena

here is a simple example.
BNF changes
EXPR ::= OPERATOR
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This is as far as I can go, please use it as a template only
because you need to take into account the precedence using ()
the logic of the eval was simply right to left so I think it is not what you want
Cheers
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VBUP: Sales Documents status & Admin. Data(Item) (VBELN, POSNR)
VBEP : Sales Document Schedule Lines Data (VBELN, POSNR, EDATU, WMENG)
VBKD: To get sales related Business data like Payment terms etc.(VBELN, ZTERM)
VBFA: Sales Document flow data(VBELV, VBELN, POSNV, VBTYP)
VBPA: Partner functions Data(VBELN, PARVW, KUNNR, LIFNR)
TVLKT: Delivery Type: Texts(LFART, VTEXT)
KNA1, KNB1, KNC1 : Customer Master Data and Other Partner’s Data(KUNNR,
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KNVK: Customer Master Contact Person(PARNR, KUNNR)
KNVV: Customer Master Sales Data.
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TVKOV: Distribution Channels(VTWEG)
TVTA: Divisions(SPART)
TVKBZ: Sales Office(VKBUR)
TVBVK: Sales Group(VKGRP)
T077D: Customer Account Group(KTOKD)
T001W: Plants(WERKS)
T001L: Storage Locations(LGORT)
TWLAD: To get address of Storage Location and Plant(LGORT, ADRNR)
TVAU: Sales Document (Order) Types
KONV: Condition Types (pricing) (KNUMV, KSCHL, KWETR)
T685T: Condition Types Texts.
ADRC: To get Addresses of Partners
VBBE, VBBS: Sales Requirements Data
VBKA: Sales Activities Data
VBPV: Sales Document Product Proposal
Based on the functionality you can search ECC table names and fields
Hope this information is helpful for you.
Thanks and Regards,
Anjali

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       AND backup_dev_id IS NULL
       AND hardware_os_id IS NOT NULL
      )    Hardware_Id is a FK to Hardware_Assets
Backup_dev_id is a FK to Backup_Devices
Hardware_os_id is a FK to Hardware_op_systems
The Tabular Form Element based on item_type column of SQL query is Displayed As Select List (based on LOV) referencing a named list of values which have the following properties
Display Value     Return Value
Hardware Asset    HA
Backup Device     BD
Computer System   HSThe Tabular Form Elements for the report attributes for hardware_id, backup_dev_id and hardware_os_id are all Displayed As Select List (Based on LOV).
What I want to do is only display the Select List for the FK depending on the value of the Select List on Item Type, e.g.
Item_Type is 'HA' then display Select List for hardware_id, do not display and set to NULL the Select Lists for backup_dev_id and hardware_os_id.
Item_Type is 'BB' then display Select List for backup_dev_id, do not display and set to NULL the Select Lists for hardware_id and hardware_os_id.
Item_Type is 'HS' then display Select List for hardware_os_id, do not display and set to NULL the Select Lists backup_dev_id and hardware_id.
There are properties on elements to conditionally display it but how do we reference the values of the SQL query Updateable region? they are not given a page item name?
Also on the Tabular For Elements there is an Edit tick against a report item - however when you go to the Column Attributes there is not a property with which you can control the Edit setting.
What's the best way of implementing this requirement in APEX 3.1?
Thanks.

>
Welcome to the forum: please read the FAQ and forum sticky threads (if you haven't done so already), and update your profile with a real handle instead of "user13515136".
When you have a problem you'll get a faster, more effective response by including as much relevant information as possible upfront. This should include:
<li>Full APEX version
<li>Full DB/version/edition/host OS
<li>Web server architecture (EPG, OHS or APEX listener/host OS)
<li>Browser(s) and version(s) used
<li>Theme
<li>Template(s)
<li>Region/item type(s) (making particular distinction as to whether a "report" is a standard report, an interactive report, or in fact an "updateable report" (i.e. a tabular form)
With APEX we're also fortunate to have a great resource in apex.oracle.com where we can reproduce and share problems. Reproducing things there is the best way to troubleshoot most issues, especially those relating to layout and visual formatting. If you expect a detailed answer then it's appropriate for you to take on a significant part of the effort by getting as far as possible with an example of the problem on apex.oracle.com before asking for assistance with specific issues, which we can then see at first hand.
I have a multi-row region that displays values and allows entries in a number of fields.Provide exact details of how this has been implemented. (An example on apex.oracle.com is always a good way to do this.)
I should like the fields to be conditional in that they do not permit entry, but still display, if certain conditions apply (e.g. older rows greyed out). Can this be done? Almost anything can be done, often in multiple ways. Which are appropriate may be dependent on a particular implementation, the skills available to implement it, and the effort you're willing to expend on it. Hence it's necessary to provide full details of what you've done so far...

Standard Report with Condition Type and Condition Records

Hello to all,
Is there any standard report available in which Condition Type and Condition values are displayed in either column or row format? The selection criteria can be either Quotation, Contract, Sales Order, Delivery, Invoice or Billing. Thanks anyways...

Hi Huzefa,
Pls check the relevant table where the condition records are stored. then do a query with that condition table and KONP. say for eg: condn type ZINV,ZMRP gets stored in condition table A821, then combine A821 and KONP, u can input condition type and get the values........................
go to vk13, display and click on layout, u will able to see the condition table.
Rgds,
Anitha J

Conditional operator and nulltype

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