The COM client and server can communicate with each other in three ways – vtbleinterfaces, dispinterface or dual interface. If the component is to be used only from compiled languages
When you declare a class as final, it can no longer be subclassed. Java has used this for security purposes with classes like String and Integer. It also allows the
An interface describes the public methods that a class should implement along with the calling conventions of those methods. An Interface says nothing about implementation of its methods. In essence,
When you declare a class as abstract, it cannot be instantiated. Only subclasses of an abstract class can be instantiated if they are not abstract themselves. When you declare a
When you synchronize a method of a class, as in: public synchronized int getAge(){ …} that method will acquire a monitor lock before execution. If the synchronized method is static,
When you declare a field variable of a class as static, that field variable is instantiated only once, no matter how many instances of the class are created. In other
Question: From the code below, I get output: ‘asdf’ which is correct. But when the VB program is closed, it says VB6 has preformed an illegal operaton and will be
Question: I have scoured the Web and can’t find any information on where to obtain BIOS version/name information. As far as I can tell, there are no APIs or C
Question: I have a query that retrieves a field which is a foreign key in two tables. The tables are organization_name and person_name. Each instance of the foreign key is