Tag: c sharp

To answer this question, we need to understand the concepts of overriding, overloading, shadowing, and method hiding.

Overriding: Overriding is a concept in object-oriented programming where a subclass provides a specific implementation of a method that is already defined in its superclass. The 'new' keyword is not used in overriding.

Overloading: Overloading is a concept in object-oriented programming where multiple methods can have the same name but different parameters. The 'new' keyword is not used in overloading.

Shadowing: Shadowing is a concept in object-oriented programming where a variable or a method in a subclass has the same name as a variable or method in its superclass. The 'new' keyword can be used to explicitly indicate that the subclass is intentionally shadowing the superclass member.

Method Hiding: Method hiding is a concept in object-oriented programming where a subclass defines a static method with the same name as a static method in its superclass. The 'new' keyword can be used to explicitly indicate that the subclass is intentionally hiding the superclass method.

Based on the above explanations, we can conclude that the 'new' keyword is used in both shadowing and method hiding. Therefore, the correct answer is E) Both C and D.

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To answer this question, we need to understand the concept of a local variable in programming.

A local variable is a variable that is declared and used within a specific block of code, typically within a method or function. It is only accessible within the scope of that block of code and cannot be accessed from outside.

Let's go through each option to understand why it is correct or incorrect:

Option A) It can be used anywhere in the program - This option is incorrect because a local variable is limited to the scope in which it is declared. It cannot be used outside of that specific block of code.

Option B) It must accept a class - This option is incorrect because a local variable does not necessarily have to accept a class. It can store any data type, including primitive data types like integers or booleans.

Option C) It must be declared within a method - This option is correct. A local variable must be declared within a method or function. It is typically declared at the beginning of the method and is only accessible within that method.

Option D) It represents a class object - This option is incorrect. A local variable does not necessarily represent a class object. It can represent any data type, not just class objects.

The correct answer is Option C. A local variable must be declared within a method.

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To answer this question, let's go through each option and determine whether it is performed by the Garbage Collector:

Option A) Freeing memory on the stack - This option is NOT performed by the Garbage Collector. The Garbage Collector is responsible for freeing memory occupied by objects on the heap, not on the stack.

Option B) Avoiding memory leaks - This option is performed by the Garbage Collector. The Garbage Collector identifies and collects memory that is no longer referenced, preventing memory leaks.

Option C) Freeing memory occupied by unreferenced objects - This option is performed by the Garbage Collector. The Garbage Collector identifies objects that are no longer referenced by the program and frees the memory occupied by those objects.

Option D) Closing unclosed database collections - This option is NOT performed by the Garbage Collector. Closing unclosed database collections is typically the responsibility of the programmer or the database management system, not the Garbage Collector.

Option E) Closing unclosed files - This option is NOT performed by the Garbage Collector. Closing unclosed files is typically the responsibility of the programmer or the operating system, not the Garbage Collector.

Therefore, the correct answer is A, D, and E. These options are not performed by the Garbage Collector.

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