- Q Given the following classes defined in separate files: class Vehicle { public void drive() { System.out.println("Vehicle: drive"); } } class Car extends Vehicle { public void drive() { System.out.println("Car: drive"); } } public class Test { public static void main (String args []) { Vehicle v; Car c; v = new Vehicle(); c = new Car(); v.drive(); c.drive(); v = c; v.drive(); } } What will be the effect of compiling and running this class Test? A. Generates a Compiler error on the statement v= c; B. Generates runtime error on the statement v= c; C. Prints out: Vehicle: drive Car: drive Car: drive D. Prints out: Vehicle: drive Car: drive Vehicle: drive Select the most appropriate answer.
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- Q I have a user that uses both a laptop and desktop computer. He was able to replicate just fine but encountered a weird issue. The user reads a message on the desktop, and then switches back to laptop and does a replication on it. The problem is that the message he just read on the desktop was still marked "unread" on the laptop, even though he just read it on the desktop and did a replication. Is it possible to have the messages read on either the desktop or laptop to be marked as read on the other computer, after he completes a replication?
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- Q On 19-20 October 1917 the largest fleet of what attempted and mostly failed to attack the UK?
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Answers
Delphi is a product of Borland International. It is a native code compiler that runs under Windows 3.1 and provides visual programming tools somewhat similar to those found in Microsoft Visual Basic 3.0. The underlying language is Object Pascal, which is an extension of the object-oriented Pascal found in Turbo/Borland Pascal starting with version 5.5.
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