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Tip Bank > Testing and QA > Debugging

Debugging - Page 3

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Find Unfinished Code
by Patrick Marshall
Never walk away from a routine that is not functionally complete but that will still compile. You might forget, or be out sick, and the module may never be finished. A simple way to avoid this ...
Viewing Error Outputs From Java Applets in IE
by Nitin Garg
The file Java/Javalog.txt in the Windows directory (i.e. C:\windows\Java.Javalog.txt for windows and C:\winnt\Java\Javalog.txt for NT) contains information for the last applet that was loaded by ...
Another Way to Fix a Single Quote in SQL Statements
by Thomas Wells
A generic approach to making sure a single quote (') does not cause a SQL statement to fail is to replace the single quote with two single quotes, as in the following example: ...
Debugging ActiveX EXE Components
by Peter Luo
Debugging ActiveX EXE components is different from debugging ActiveX DLL components, and a bit more difficult. Here is how to do it: ...
Determine if an Error Has Occured During Object Construction
by Sandeep Gain
This can be achieved in java by throwing an exception from your Constructor. Since Constructors cannot return a value, this is the only way you can achieve error handling.
Use VB's Date/Time Picker Control With No Date
by Jason Ingram
Using the DTPicker control is good except if you
Exception Handling, Inheritance and the Need For Strict Rules
by Anil Nair
Java has some strict rules for exception handling when it comes to inheritance and overriding of methods.
View Recordsets in Temporary Grids
by Nazmul Siddiqui
An alternate, convenient way to view recordsets in debug mode is to persist a recordset to disk using rs.save MyFileUNC.ADTG in the immediate window. Note that the file must be of ADTG type (*.
Populating Controls From a Recordset
by Nazmul Siddiqui
On a form, basing populating controls on a supplied record may lead to error, because a perfect match is needed between the control tags and the field list. Any pre-specified error handler jumps ...
Returning a Value from a Function that Throws
by Danny Kalev
A reader asked me the following questions: "Can a function that returns something, throw a exception and still return a value?" Lets' look at a concrete ...
Passing an ActiveX Control As a Parameter
by Mahesh Hegade
Trying to pass an ActiveX control as a parameter to a method on an external ActiveX DLL (or EXE), garners a
Use printStackTrace() method to generate stack
by Deepak Pant
Stack trace is a kind of call stack, which maintains the call sequence of methods at any given point in time. Throwable class in Java provides a method called "printStackTrace()" which can be ...
Significance of const Return
by DevX Pro
What is the significance of const return type from a function? Similar to: const int func1();
Rethrowing a Throwable Exception in Your Code
by Mahesh Chulet
Use the fillInStackTrace() method to rethrow a Throwable type of exceptional condition in your code. This is useful if you want to rethrow a exception that occurred while using a method or creating a ...
xp_cmdshell and Windows Apps
by DevX Pro
Why can't I run an application like ws-ftp from SQL with xp_xmdshell? ws-ftp will start, but it's not visible on the screen.
Violating an Exception Specification
by Danny Kalev
The implementation ensures that functions having an exception specification should throw only exceptions that are listed in their exception specification. For ...
Cannot Quit FoxPro
by DevX Pro
I have built an executable file and included a READ EVENTS command. After running the .exe, I am unable to quit VFP. The message I get reads: "Cannot quit FoxPro."
Function's Return Value
by DevX Pro
I'd like to know how can I make a return of a function's local variable (for example, a reference to it) not using pointers technique?
Keyword 'huge'
by DevX Pro
I am getting a compile error 'huge' obsolete keyword. I am converting a process from Visual C++ 2.0 to 6.0. What keyword could I use in place of 'huge'?
Stack Unwinding in the Event of an Uncaught Exception
by Danny Kalev
When an exception is thrown and no matching handler can be found for it, C++ invokes the function terminate(). By default, terminates invokes the function abort(). Some compilers guarantee that at ...
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