Postfix operator conflict!!!!
Try this code segment:
//assuming all variables are previously declared.
k = ++i-- + j;
Why if the postfix operator cannot be evaluated until the operation is completed does it have a higher presedence that the prefix operator.
When attempting to compile this code an error is generated. This error occurs because the prefix operator has a lower presedence than the postfix operator but Must be evaluated first in order to complete the command.
The problem is that however it's parsed (++(i--) or (++i)--) one of the operations is applied to an expression rather than a variable which violates the syntax rules for Java.
Similar Messages
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Am confused at this PostFix Operator code, pls help.
Hi all,
pls chk this piece of code:
public class Program {
public static void main(String[] args) {
int i = 0;
for (int j = 0; j != 10; j++) {
i = i++;
System.out.println(i);
Its output is 0, can someone pls give a detailed explanation.
Thanx in advance.I used the double quotes to indicate a literal value,
isn't that the usual way to express that in ordinary writing?
http://onesearch.sun.com/search/onesearch/index.jsp?qt
=i+%3D+i%2B%2B%3B&subCat=siteforumid%3Ajava31&site=dev
&dftab=siteforumid%3Ajava31&chooseCat=javaall&col=deve
loper-forumsThis is surreal ;-)
kind regards,
Jos -
Hi All,
i had some doubt regarding postfix operation in java.Please check the following code. and pls give me the suggestion
class incrementTest1
public static void main(String[] args)
int i=0;
i++;
i++;
i++;
System.out.println("iii->"+i);
this will print iii->3
The other one is
class incrementTest
public static void main(String[] args)
int i=0;
i=i++;
i=i++;
i=i++;
System.out.println("iii->"+i);
this will print iii->0
if i am assigned the postfix to some variable it will not incremented. why it is happening is this is java problem.
Please clear me
thanks in advancehttp://forum.java.sun.com/thread.jsp?forum=31&thread=303846
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Hi 0001waqas,
Thank you for posting and welcome to the Nokia Support Discussions!
Can you tell us where exactly do you see the said error message? Is it on the Application or Browser? Did something happen on the phone prior to this issue? Is your phone's software up-to-date?
You may want to check on this thread: http://discussions.nokia.com/t5/Hardware-Codes-and-Operator/conflicting-applications/m-p/2137239#M32.... If it will not work, try to update or re-install your phone's software by connecting it to your computer with the Nokia Suite installed.
Let us know the outcome. -
Routing Consistency Check in batch ?
Hey folks!
A business requirement has been raised to perform a consistency check for all Routing Task Lists for a specific plant. I'm aware of the consistency check within the Routing that can be performed online. Anyone know of a batch/background job that can validate routings and report errors?
The business case is as follows: Reference Operation Sets are utilized within Routing Task Lists. If a change is made to the Reference Operation Set (say add additional operations) and these additional operations conflict in the routing this ROS is utilized, this will cause a routing error. Yet there is no way to identify this error until someone checks the routing or writes a production order against.
Any help on the above would be great. Points are waiting to be awarded!Nathan,
I do not think there is a background program that can run to check for such inconsistency.
However when MRP runs system will detect routing inconsistency & will display exception message against planned order.
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They can look for exception messages either under Tcode: MD04/ MD05 or collectively under MD06/MD07 group by exception message.
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Ram -
Hi All,
I have a SSIS package.
Very Simple one.
Two OLEDB connection for SQL Server.
I am trying to copy data from a server to another server by column mapping.The source Server is SQL 2000 and Destination is SQL 2005.Everything is ok.. like connections. As there are another two EXECUTE SQL Task, which are executing some sql in the destination server (SQL 2005).All all those two task is ok
But when i am debuging the project all the following errors occurs
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2.[DTS.Pipeline] Error: SSIS Error Code DTS_E_PROCESSINPUTFAILED. The ProcessInput method on component "OLE DB Destination" (121) failed with error code 0xC0202009. The identified component returned an error from the ProcessInput method. The error is specific to the component, but the error is fatal and will cause the Data Flow task to stop running. There may be error messages posted before this with more information about the failure.
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4.[OLE DB Source [1]] Error: Setting the end of rowset for the buffer failed with error code 0xC0047020.
5.[DTS.Pipeline] Error: SSIS Error Code DTS_E_PRIMEOUTPUTFAILED. The PrimeOutput method on component "OLE DB Source" (1) returned error code 0xC0209017. The component returned a failure code when the pipeline engine called PrimeOutput(). The meaning of the failure code is defined by the component, but the error is fatal and the pipeline stopped executing. There may be error messages posted before this with more information about the failure.
6.[DTS.Pipeline] Error: SSIS Error Code DTS_E_THREADFAILED. Thread "SourceThread0" has exited with error code 0xC0047038. There may be error messages posted before this with more information on why the thread has exited.
a
Any solutions ??I have now another problem with that same SSIS package.
This is now working fine as when i am debugging it from SQL Server Business Indeligence Development Studio.
It is succesfully debuged, without any error showing.
Now I have created a Job to schedule the above SSIS Package
The Job step written is ...
dtexec /f "C:\Program Files\Microsoft SQL Server\MSSQL.1\MSSQL\SSIS_Proj\DataFetch_From_SALES\DataFetch_From_SALES\package.dtsx"
When i executing the job gettin the following error
cryptographic error. Verify that the correct key is available. End Error Error: 2008-02-21 14:29:12.03 Code: 0xC0016016 Source: Description: Failed to decrypt protected XML node "DTSassword" with error 0x8009000B "Key not valid for use in specified state.". You may not be authorized to access this information. This error occurs when there is a cryptographic error. Verify that the correct key is available. End Error Progress: 2008-02-21 14:29:57.48 Source: Data Flow To SALES_TBL Validating: 0% c... Process Exit Code 1. The step failed.
Note : What I am doing is inserting data from a MS SQL Server 2000 table to a MS SQL Server 2005 table.
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Is there any difference between the reader function of Adobe Acrobat and Adobe Reader
I would think, not.
Also, can Adobe Reader and Adobe Acrobat be on the same computer without operational conflicts?
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Hi
I'm trying to deploy MBO project with SAP as backend, below is the error which comes up
An error occurred deploying package, .pkg to server, trincula (Exception: Deploy error:
runtime_error:
----Unknown error in server runtime: loader constraint violation: when resolving method "com.sybase.afx.jdbc.DataSourceInfo.setDataSource(Ljavax/sql/DataSource;)V" the class loader (instance of com/sybase/djc/util/NamedClassLoader_DJC) of the current class, FlightBooking/server/FlightBookingDB, and the class loader (instance of sun/misc/Launcher$AppClassLoader) for resolved class, com/sybase/afx/jdbc/DataSourceInfo, have different Class objects for the type javax/sql/DataSource used in the signature
Please give some inputs.Following is the error which came up on verify
varify_failed:
----Verify failed for deployment with mode VERIFY.
ds_deploy_error:
----DataService deployment error: Operations Conflict in MBO "Booking" different nodes
ds_deploy_error:
----DataService deployment error: Operations Conflict in MBO "Flight" different nodes
What I changed is the Operation Type in Booking and Flight MBO.
I had two operation in Booking 'confirm' and 'cancel' having operation type 'CREATE'. So I changed 'cancel' to 'UPDATE'. Same I did for Fight MBO.
Its deploying successfully now but just to get to root cause of this. Is it related to the elements which I chosen for creating that operation has resulted in conflict?? -
Well ... I`m working on Java Decompiler Project as my
College Project.Now, my softare is already decompiling
simple programs but i`ve got stuck now at decompiling
characters, short ints & bytes because all of them are
stored as integers according to JVM Specification.
Simply,
These 2 Statements :-
int a=97;
AND
char b='a';
Result in same set of ByteCode Instructions :-
bipush 97
istore_<n>
Now, how can differentiate between the 2 so that i can
regenerate the source file ?
Any help is appreciated !!
Thx
AmitHi,
If you're talking about class variables then the type is in the "Field Info" structure of the class file.
http://java.sun.com/docs/books/vmspec/2nd-edition/html/ClassFile.doc.html#2877
If you're talking about local variables, then there's a LocalVariableTable structure, per method which has that information.
http://java.sun.com/docs/books/vmspec/2nd-edition/html/ClassFile.doc.html#5956
The localVariableTable information is only available when a java source is compiled with debugging information.
What I done, when I'd no localvariabletable in the class file, was to create my own dynamic localVariableTable object, and fill in the types based on the operations performed on them, or their operands type.
I'd use the narrowest data type to start with, and widen it as needed.
So, in your example, it would guess character, until another operation conflicted with that. It's not bulletproof, but better than nothing.
regards,
Owen -
Gosling's book "The Java Programming Language" says postfix operator ++ has higher precedence than the prefix operator ++ (page 177, 3rd e). But it seems not. Look at the following code snippet:
int k = 1;
System.out.println(++k * k++ / 4);
If that is true, ++k * k++ / 4 should be evaluated like this:
++k * (k++) / 4 // gives ++k * 1 / 4 and k is 2 now
(++k) * 1 / 4 // gives 3 * 1 / 4
So the result should be 0. Actually it is 1.
If we think postfix and prefix operators ++ have the same precedence, then
we can come to the right answer:
++k * k++ / 4 is evaluated like this:
(++k) * k++ / 4 // gives 2 * k++ / 4 and k is 2 now
2 * (k++) / 4 // gives 2 * 2 / 4 and k is 3 now
The final result is 2 * 2 / 4, which is 1.
Any comments are appreciated.In this case
int b = ++a * a++;There is no precedence to consider with regard to ++a vs a++, the only precedence is with * vs ++
precedence only cone into play when you've got something like this
1+2*3
what's the answer? if you evaluate strictly from left to right, then the answer is nine.
If you apply normal rules of operator precedence, the you get seven.
In your examples, you could to have also written;
int a =1; int b=a;
b+=1;
b=b*b; //since prefix operator is first, its the value us used in the first and second part of the calculation
b+=1;
and the second example is
int a =1; int b=a;
b+=1;
b=a*b; //since the prefix operator is in the later part, only use it in the second half of the calculation.
b+=1;
since ++/-- is the higest precedence in most equasions it is valued first, prefix vs postfix doesn't matter as you cannot use an increment / decrement operator on the same variable twice.
Illegal: ++(++a)++
Legal: ++a + ++a
This is because the result of an increment operation is a value, not a variable. just like you cannot write ( a b ) + and expect any meaningful result, since the result of a+b is not a variable, but a number. -
Iplanet kjs servlet init() method
In iplanet is the servlet init method called in each KJS engine.
I have a continous thread running in a servet.This is invoked by a webased hyperlink.Some times ther happens to be 2 threads running and results in false operations.Conflict b/w threads.
Suspect one thread in each KJS is running.This is the incorrect forum for this question. Sun ONE Application Server 7 is a completely new appserver and does not have KJS related technologies or APIs. Please check AppServer 6 forum.
HTH.
Paul -
hallo, everyone here.
I've a question about 0 divident exception.
I wrote the following code, where c, d, and e should have triggered 0 divident exceptions, but in fact no exception happend. Why?
==========my code begins=================
class Mainp305 {
public static void main(String[] args) {
int a = 10;
int b = 0;
try{
System.out.println("get into try block");
b++;
int c = a / b;
System.out.println("value of c" + c);
int d = a/b;
System.out.println("value of d" + d);
int e=(a/b);
System.out.println("value of e" + e);
System.out.println("get out of try block");
} catch (Exception e) {
System.out.println("get into catch");
a++;
System.out.println("get out of catch");
} finally {
System.out.println("get into finally");
a++;
System.out.println("get out of finally");
System.out.println("a before print:" + a);
System.out.println(a++);
System.out.println("a after print:" + a);
============my code ends============
by the way, after I change my code as following, when I executed it, the 0 divident exception did happened. I don't knowd why.
Please do help me. Thank you.
======my changed code, begins==========
class Mainp305_2 {
public static void main(String[] args) {
int a = 10;
int b = 0;
int c = a / b;
System.out.println("value of c" + c);
======my changed code, ends============>
I've a question about 0 divident exception.
I wrote the following code, where c, d, and e should have triggered 0 divident exceptions, but in fact no exception happend. Why?
>
Because a 'divide by zero' exception only occurs when you attempt to 'divide by zero'.
This line of code sets 'b' to zero
nt b = 0;And this line of code increments 'b' to 1
b++;So these lines of code are dividing by 1
int c = a / b;
int d = a/b;
int e=(a/b);Dividing by 1 does not cause a 'divide by zero' exception.
>
after I change my code as following, when I executed it, the 0 divident exception did happened. I don't knowd why.
>
Because this line of code sets 'b' to 0
int b = 0;Anid this line of code tries to divide by 0
int c = a / b;Because a 'divide by zero' exception occurs when you attempt to 'divide by zero'.
For the Java spec for the postfix operator (++) see the Java Language Specification
http://docs.oracle.com/javase/specs/jls/se7/html/jls-15.html#jls-15.14.2
>
15.14.2. Postfix Increment Operator ++
the value 1 is added to the value of the variable and the sum is stored back into the variable. -
SSAS 2012 Tabular Error: The operation was cancelled because of locking conflicts
I have a 800 mb SSAS database that I refresh(Process current day partition) every 30 minutes. As soon as the processing starts all my users get error The operation was cancelled because of locking conflicts. I ran the deadlocks trace as described in http://blogs.msdn.com/b/sql_pfe_blog/archive/2009/08/27/deadlock-troubleshooting-in-sql-server-analysis-services-ssas.aspx
but all I see is the processing start and all the users getting the error ("The operation was cancelled because of locking conflicts") 22 mil sec after the processing starts.
I also ran "select * from $system.discover_locks" but I only see lock types 2,4 and 8. None of which seem to be exclusive
This is SSAS 2012 with sp 1
Database ArchitectHi Derek,
According to your description, you get the dead lock error when processing partition. Right?
In Analysis Services, this error occurs when lock manager detects a dead lock. Lock type 2,4 and 8 can also have two transactions waiting each other and cause deadlock. In this scenario, please check the Dead Lock Graph in SQL Profiler
and find the related processes. Check what the processes work for to see if you need to do parallel processing or process other objects before partition processing.
Best Regards,
Simon Hou
TechNet Community Support -
Opera-devel: conflicts with opera ??
I have just attempted to install the AUR opera-devel (10.5) package with "yaourt -S opera-devel" and it fails with:
checking dependencies...
error: replacing packages with -U is not supported yet
error: you can replace packages manually using -Rd and -U
error: failed to prepare transaction (conflicting dependencies)
:: opera-devel: conflicts with opera
==> WARNING: Your package is saved in /tmp/yaourt-tmp-larry/opera-devel-10.52_6272-1-i686.pkg.tar.gz
Any ideas what I do next? Yes, I do already have Opera 10.10 installed.ruario wrote:
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Postfix/smtp[8437] Operation timed out can't send mail to 1 address
server 10.4.5 running mail, filesharing and website.
The mail server has been up for months working fawlessly. We have one address (domain) where we can't send mail, and users at that address can't send us mail.
All other mail functions on both ends seem to be functioning fine.
They seem to be running exchange as a mail server, but i don't have other details from their side. DNS/MX records all look like you would expect.
This has me stumped.
i turned debug level loging on and got the following smtp message written to the log when i tried to mail to an address at that domain.
Feb 23 20:45:10 fileserver postfix/smtp[8437]: 775401AFD61: to=<[email protected]>, relay=none, delay=31, status=deferred (connect to anhc-mail.anhc.org[24.237.2.213]: Operation timed out)Yes, good luck to them.
relay=none
doesn't look so good.
Of course, a successful outgoing message should look something more like:
Apr 8 11:41:05 server postfix/smtp[2300]: F1D4D3B8A27: to=<[email protected]>, relay=mail.someobfuscatedserver.com[6x.20x.148.1x6], delay=5, status=sent (250 2.0.0 k38FYfDS023848 Message accepted for delivery)
I take it you can send to any/all other mail addresses (servers) ?
Here's a thought:
Some time ago, I had to edit the helo_checks config of postfix, for a windows mailserver because their AntiVirus was horribly mangling their outgoing mail, helo-ing as <fix-your-dns>.local
Point being that .local anything is not a viable tld for anything in the public realm, and certainly won't work with the rest of the world in terms of DNS.
That might be the work of Norton's break-it-for-you addon for Windows Exchange mailservers, not sure.
Please post the output of:
postconf -n
on your server,
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