java interview questions - Wikitechy https://www.wikitechy.com/interview-questions/tag/java-interview-questions/ Interview Questions Sat, 11 Sep 2021 11:45:44 +0000 en-US hourly 1 https://wordpress.org/?v=6.9.4 https://www.wikitechy.com/interview-questions/wp-content/uploads/2025/10/cropped-wikitechy-icon-32x32.png java interview questions - Wikitechy https://www.wikitechy.com/interview-questions/tag/java-interview-questions/ 32 32 Tarun wants to write code for his computer class homework but he had misheard the teacher and only can recollect remembering this 4 words. Which of the following is what he couldn’t have had heard ? https://www.wikitechy.com/interview-questions/programming/tarun-wants-to-write-code-for-his-computer-class-homework-but-he-had-misheard-the-teacher-and-only-can-recollect-remembering-this-4-words-which-of-the-following-is-what-he-couldnt-have-had-h/ https://www.wikitechy.com/interview-questions/programming/tarun-wants-to-write-code-for-his-computer-class-homework-but-he-had-misheard-the-teacher-and-only-can-recollect-remembering-this-4-words-which-of-the-following-is-what-he-couldnt-have-had-h/#respond Fri, 27 Aug 2021 00:17:49 +0000 https://www.wikitechy.com/interview-questions/?p=2568

Tarun wants to write code for his computer class homework but he had misheard the teacher and only can recollect remembering this 4 words. Which of the following is what he couldn’t have had heard?

A. Distributive

B. Multilevel

C. Multiple

D. Hierarchical

Answer : A. Distributive

Explanation:

Multiple Inheritance:

  • It refers to the concept of one class extending (Or inherits) more than one base class. The inheritance we learnt earlier had the concept of one base class or parent. The problem with “multiple inheritance” is that the derived class will have to manage the dependency on two base classes.
Multiple Inheritance

Multilevel Inheritance:

  • When a class extends a class, which extends anther class then this is called multilevel inheritance. For example class C extends class B and class B extends class A then this type of inheritance is known as multilevel inheritance.
Multilevel Inheritance

Hierarchical Inheritance:

  • When more than one classes inherit a same class then this is called hierarchical inheritance. For example class B, C and D extends a same class A.
Hierarchical Inheritance
]]> https://www.wikitechy.com/interview-questions/programming/tarun-wants-to-write-code-for-his-computer-class-homework-but-he-had-misheard-the-teacher-and-only-can-recollect-remembering-this-4-words-which-of-the-following-is-what-he-couldnt-have-had-h/feed/ 0 What is class/object diagram ? https://www.wikitechy.com/interview-questions/java/what-is-class-object-diagram/ https://www.wikitechy.com/interview-questions/java/what-is-class-object-diagram/#respond Tue, 13 Jul 2021 23:06:29 +0000 https://www.wikitechy.com/interview-questions/?p=614

What is class/object diagram ?

Java Class:

  • A class is an entity that determines how an object will perform and what the object will contain.
  • In other words, it is a blueprint or a set of instruction to build a specific type of object.
Class and Object Diagram

Syntax:

class ClassName {
   // variables
   // methods
}

Java Objects:

  • When class is defined, only the condition for the object is defined.
  • No memory or storage is allocated.
  • To access members defined within the class, you need to create objects.

Syntax:

ClassName ReferenceVariable = new ClassName();
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