1, What is the .NET class that every other class is derived from? 2. If two clas
ID: 3860816 • Letter: 1
Question
1, What is the .NET class that every other class is derived from?
2. If two classes of the same name occur in two different namespaces and both namespaces are used (included) what must be done when using the classes?
3. For a method of a class to be overridden in a subclass which of the following must occur.
4. The class SmithKarenCreature inherits from the class Creature . An instance of SmithKarenCreature is created and referenced in the variable kCreature using the following code: SmithKarenCreature kCreature = new SmithKarenCreature();
A variable called creature of type Creature is declared and kCreature is cast as type Creature and assigned to creature using the following line of code:
Creature creature = (Creature)kCreature;
Which of the following is an alternative syntax to the above line of code?
5. Why does a syntax error occur when trying to declare a variable called 'lock'?
SystemExplanation / Answer
1) What is the .NET class that every other class is derived from
Ans) System.Object is the correct answer
Explanation:
System.Object is the .NET class that every other class is derived from because it will support the all the classes in the .Net framework class hierarchy and it will provide all the services to the derived classes so System.Object is the correct answer
3)For a method of a class to be overridden in a subclass which of the following must occur
Ans) The method must be declared as public is the correct answer
Explanation:
when we declare the method as public then only that method can be overriden in the subclass
For Example:
class Example{
public void test() {
System.out.println("method to be overriden");
}
}
class Subclass extends Example{
public void test() {
System.out.println("method overriden");
}
In the above example the method test if Example class is overriden in the next Subclass because it is declared as public
5) Why does a syntax error occur when trying to declare a variable called 'lock'?
Ans) 'lock' is a reserved keyword is the correct answer
Explanation:
lock is the reserved keyword in c# so when we declare it as variable then we get syntax errors so we should not declare the keywords as varaibles
2. If two classes of the same name occur in two different namespaces and both namespaces are used (included) what must be done when using the classes?
Ans)Right click on the class name in the code and select the correct class from the popup menu that appears is the correct answer
Explanation:
when we have two classes of the same name occur in two different namespaces and both namespaces are used (included) what must be done when using the classes then we have to Right click on the class name in the code and select the correct class from the popup menu that appears because based on the requirement we have to choose the class.
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