Explain the COM components
Explain the COM components?
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It evolved as this while u write a CLASS to reuse within a application, numerous instances of the class exists along with each instance of application, subsequently u want to ignore it to make a class and put this in DLL now only one example exists though numerous instances of applications exists Application requires to be recompiled while DLL is modified, therefore came COM.
COM is independent component which internally handles networking and resources COM utilizes IDL to communicate to various languages.
Message passing: We characterize the object interactions as message passing. The client object sends a message to a server object by invoking a technique from the server's class. Arguments might be passed with the message, and a outcome is returned by
Define the term createWindow object? Answer: reateWindow() physically makes the Window in memory based upon the earlier registered WND
1. Here is a short program. It prints out the value of a variable "x". Ernie and Bert disagree about what will be printed: Ernie says, the value gets changed in "changeX" so it will print "7", and Bert says, no, when the function exits the changes get reversed and the value goes back to "5". Explain
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Final class: This is the class with final reserved word in its header. A final class might not be extended by the other class.
Define the synchronization objects. Ansewr: A synchronization object is use to co-ordinate the execution of many threads.
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Data type conversion: Conversion of one data type into the other data type. Two kind of conversion that is, A) Implicit Conversion: This is automatically taken care
Return type: It is the declared type of a method, appearing instantly before the method name, like void in public static void main(String[] args) or Point[] in
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