June 20, 2001

Often, while developing a system you want to debug it using System.out.println or System.err.println. When development is over you would like to send all those messages to file. The easiest way to do this is to assign System.out and System.err to corresponding files. Here is the code: public class MyClass{

If you are writing an application in which you don’t know the class of an object until runtime, then you cannot use the new operator to instantiate the object. This is because new does not take the name of class file as a parameter. In this situation, you have to

The assert macro can be used to detect errors as soon as they occur. This macro is defined in the include file , and is used that way: assert (expression) ; If expression is false, the program will stop. This indicates which assertion failed.The really nice thing about this macro

Use the following code: Public Function IsLeapYear(iYearToCheck As Integer) As BooleanIsLeapYear=IsDate(Format(

Put the control(s) in a frame and disable the frame. This will even eliminate graying out or color changes.

In C++, this can be achieved by throwing an exception from your Constructor. Since Constructors cannot return a value, this is the only way to achieve error handling. Class MyClass{ private: int x; FILE * file; MyClass(){ x = 10; file = fopen(