exception

does throws exception leads the program to a pre written code

( patience requested as i'm new to programming ) when you add the phrase throws ABCexception in method declaration like this public static void main(String[] args) throws ABCException { } does it mean that the you expect the method could generate an ABC exception and by writing throws ABCException ... when this exception occurs .. ...

Exception when loosing a thread

I start two threads with a Timer and TimerTasks Timer timer = new Timer(); TimerTask task = new TimerTask() { public void run() { doSomething(); } }; Calendar start = Calendar.getInstance(); timer.scheduleAtFixedRate(task, start.getTime(), 1000 * 60 * 60); Now sometimes the second ...

java PdfTextExtractor.getTextFromPage(Unknown Source)

Hello i have trouble with parsing a pdf when the iterator reaches page 11 an exception is throw. Any ideas? Thanks Here's my code: import java.io.*; import java.nio.charset.Charset; import java.util.regex.*; import com.lowagie.text.pdf.PdfReader; import com.lowagie.text.pdf.hyphenation.TernaryTree.Iterator; import com.lowagie.text.pd...

Potentially dangerous Request.Form value - Exception

Hi, today I receive multiple (50->*) e-mails regarding: A potentially dangerous Request.Form value was detected from the client (ctl00$Content$InputStreet="OzgYPY <a href="http://effe..."). and A potentially dangerous Request.Form value was detected from the client (ctl00$Content$InputStreet="GVdtWm <a href="http://mxif..."). a...

accessing private variable from member function in PHP

I have derived a class from Exception, basically like so: class MyException extends Exception { private $_type; public function type() { return $this->_type; //line 74 } public function __toString() { include "sometemplate.php"; return ""; } } Then, I derived from MyException like so: cl...

Inherit Exception class to log all subsequenace occourance of exception

If I want to log all occournace of exception through out my application so far, should I inherit Exception class and throw all exception of that class, whose constructor will log the error details.. or any idea or suggestion??? ...

mdf file is work correctly under App_data folder but after attaching to sql server give following error

mdf file is working correctly under App_data folder but after attaching it to sql server give following error when running asp.net page. Cannot open user default database. Login failed. Login failed for user 'Domain\myUserName'. [edit] More information; SQL data source and connection string. <asp:SqlDataSource id="srcFiles" ...

Exception while compiling: wrong version 50.0, should be 49.0

I am working an application with JXL API and when i tried compiling using eclipse IDE, it's working fine and the same is not compiling when i am trying to compile in Command prompt and showing the below exception.. Extract.java:6: cannot access jxl.read.biff.BiffException bad class file: C:\Program Files\Java\jdk1.5.0_01\jre\lib\ext\jxl...

Java Exception Error - Sqlite preparedStatement.setBlob

I'm placing and image into a databse, it could be eitehr an MYSQL database (the Server) or an SQLITE database (a Tablet PC for on the road). The Java application synchs with the server on a dialy basis, uploading new data and downloading any new data. Thats working terrirfic, the requirement is for it to be able to handle images as well....

Why is this object being deallocated?

Hi, I'm developing an iPhone app, I'm trying to push a view into the navigation controller, which I've done many times before, however, I'm having some issues with this particular app. I have a table view, and when the user selects one row the new view is pushed into the controller: DataWrapper *row=[[self.rows objectAtIndex:[indexPath ...

com.ibm.db2.jcc.b.SqlException: Invalid argument: unknown column name COL1

Hi, i was getting this error com.ibm.db2.jcc.b.SqlException: Invalid argument: unknown column name COL1 when trying to access my resultSet with rs.getString("COL1"). My SQL Query is: Select UPPER(COL1) from table1. the same query and Java code is working fine with DB2 v8(Type 2 driver) but it is throwing the above exception when using w...

Which is preferable and less expensive: class matching vs exception?

Which is less expensive and preferable: put1 or put2? Map<String, Animal> map = new Map<String, Animal>(); void put1(){ for (.....) if (Animal.class.isAssignableFrom(item[i].getClass()) map.put(key[i], item[i]); void put2(){ for (.....) try{ map.put(key[i], item[i]);} catch (...){} Question revision: The question wasn'...

System.OutOfMemory Exception in VS2008 when loading TestResults

Hi. I'm experiencing some problems when loading a TestResults list (.trx) from the nightly builds on the buildserver. I get a System.OutOfMemory exception very often. I just checked the memory and the devenv process loading the .trx file threw the exception at roughly 700 MB. The .trx file has a size of 167 MB. Furthermore I can load...

A network-related or instance-specific error occurred while establishing a connection to SQL Server. The server was not found or was not accessible.

I am getting the above error when I upload my app to the hosting company.(asp.net) DB is a local sql mdf in app_data directory. on local asp.net dev server everything is ok. I am using LINQ to SQL Classes, is there anything that can be related to that? Thanks in advance ...

Is it mandatory to use an ALIAS when we are doing some operation on the column?

Folks, Is it mandatory to use an ALIAS when we are doing some operation on the column? Ex: select upper(col1) from table1 when i am trying to retrieve the resultset by rs.getString("col1"), it was giving this exception COM.ibm.db2.jdbc.DB2Exception: [IBM][JDBC Driver] CLI0611E Invalid column name. SQLSTATE=S0022 when I changed the qu...

Exceptions as a control mechanism

I was reading this post and laughed http://mcfunley.com/239/exceptions-are-not-a-control-mechanism In one of my apps i do not use File.Exist even tho i EXPECT files to exist a good deal of the time. I try to create a file without overwriting the older and if it fails i rename as Filename (Try Number).ext and loop until it opens. Should...

Is there really a performance hit when catching exceptions

edit: Someone had added the C# keyword. I am NOT talking about C#, just exceptions in general. Specifically, exceptions in compiled languages like C++ and D; though C# was also in my mind. I asked a question about exceptions and I am getting VERY annoyed at people saying throwing is slow. I asked in the past How exceptions work behind ...

Why don't statements that don't do anything throw an exception (or warn the developer)?

I've been bitten a couple of times by statements in VB.NET (not sure if this effect exists in C#) that appear to be self-referencing, but when they're executed, they don't actually do anything because they require a target and one isn't provided. For example: Dim MyString as string = "String to test" ' Neither of these lines do anythin...

Java coding practice, runtime exceptions and this scenario

In the following scenario, I was trying to see how to handle this code and it how it relates to Runtimexception. I have read that is generally better to throw runtime exceptions as opposed to rely on static exceptions. And maybe even better to catch a static checked exception and throw an unchecked exception. Are there any scenarios w...

How does TDD work with Exceptions and parameter validation?

I have come to something of a crossroads. I recently wrote a 10,000 line application with no TDD (a mistake I know). I definitely ran into a very large amount of errors but now I want to retrofit the project. Here is the problem I ran into though. Lets take a example of a function that does division: public int divide (int var1, int var...