3i Infotech Papers: Sample Questions 874 - 876 of 1245

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Question number: 874

» Languages » Assembly Language

Essay Question▾

Describe in Detail

How is linked list implemented?

Explanation

Understanding of implimentation of linked list

Understanding of Implimentation of Linked List

Understanding of implimentation of linked list

  • Linked list is made from nodes.

  • A node has two fields:

    • Object field holds the actual data

    • Next (pointer) holds starting location of the next node.

  • Head points to the first node.

  • Last node typically points to NULL.

Question number: 875

» Languages » Java

True-False▾

Question

Is the Following Statement True or False?

Java supports multiple inheritances?

Answer

FALSE

Explanation

Java does not support Multiple inheritance

Java Does Not Support Multiple Inheritance

Java does not support Multiple inheritance.

  • False

  • Java does not allow multiple inheritances to avoid the ambiguity (see diagram above).

  • Multiple inheritance happens when a class extends more than one superclass.

Question number: 876

» Languages » Java

Essay Question▾

Describe in Detail

What are adapter classes

Explanation

The object adapter pattern

The Object Adapter Pattern

The object adapter pattern

  • Provides the default implementation of an interface.

  • A class inheriting from adapter class is not forced to provide the implementation of all the methods of listener interface.

  • Useful for processing only few of the events- provide definition of only few functions in the interface relevant to us.

Advantages of the Adapter Class

  • Assists bringing together unrelated classes.

  • Increases transparency of classes.

  • Allows including related patterns in a class.

  • Provides a pluggable kit for developing applications.

  • Makes an interface highly reusable.

Example of adapter class:

Example of adapter class

Example of Adapter Class

Example of adapter class