Tag: java

Questions Related to java

  1. 1.information hiding

  2. 2.encapsulation

  3. 3.Inheritance

  4. 4.modularity


Correct Option: B
Explanation:

To solve this question, the user needs to be familiar with the concepts of object-oriented programming and the principles of encapsulation and information hiding.

Now, let's go through each option and explain why it is right or wrong:

A. 1. information hiding: This option is correct. Information hiding is the practice of encapsulating the internal details of an object and providing access to it only through its member functions. This helps to hide the complexity and implementation details of an object, allowing for better maintainability and preventing unauthorized access to sensitive information.

B. 2. encapsulation: This option is correct. Encapsulation is the practice of bundling data and methods together within a class and providing controlled access to them. It allows for the implementation details of an object to be hidden and accessed only through the defined interface, promoting modularity and code reusability.

C. 3. Inheritance: This option is incorrect. Inheritance is a concept in object-oriented programming where a class derives properties and behaviors from another class. It is not directly related to the practice of providing access to an object only through its member functions and keeping the details private.

D. 4. modularity: This option is incorrect. Modularity refers to the practice of dividing a program into smaller, independent modules that can be developed, tested, and maintained separately. While encapsulation and information hiding contribute to modularity, modularity does not specifically refer to the practice of providing access to an object only through its member functions and keeping the details private.

The Answer is: B. 2. encapsulation

  1. 1.Empty set

  2. 2.one pair a==true,b==false

  3. 3.two pairs in which a==true

  4. 4.two paires in which a!=b

  5. 5.All 4possible combination


Correct Option: C
  1. 1.static,nonstatic class

  2. 2.Inheritance,Composition

  3. 3.Composition,Inheritance

  4. 4.Overriding,Overloading


Correct Option: C
  1. 1.BorderLayout

  2. 2.Ther is no layout

  3. 3.FlowLayout

  4. 4.GridLayout


Correct Option: A
  1. 1.program ignores exceptn

  2. 2.program halts immediately

  3. 3.Program will not compile

  4. 4.None of the above


Correct Option: B
  1. 1.Robust

  2. 2.Procedural

  3. 3.Distributed

  4. 4.Multithreaded


Correct Option: B

What is the output of the program?

  1. 13

  2. 15

  3. 0

  4. Compiler error


Correct Option: D

which is the first web browser developed in java

  1. internet explorer

  2. Netscape Navigator

  3. Hotjava

  4. Opera


Correct Option: D

AI Explanation

To answer this question, we need to understand the development of web browsers and their history.

Option A) Internet Explorer - Internet Explorer was not the first web browser developed in Java. It was developed by Microsoft and primarily used the C++ programming language.

Option B) Netscape Navigator - Netscape Navigator was not the first web browser developed in Java. It was developed by Netscape Communications Corporation and initially written in C and C++ programming languages.

Option C) Hotjava - Hotjava was the first web browser developed in Java. It was a project by Sun Microsystems and released in 1995. Hotjava was a significant development as it showcased the capabilities of the Java programming language in creating cross-platform applications.

Option D) Opera - Opera was not the first web browser developed in Java. It was developed by Opera Software and primarily used the C++ programming language.

The correct answer is Option C) Hotjava. This option is correct because Hotjava was the first web browser developed in Java.

what is the output of the following program

  1. 0

  2. -1

  3. -2

  4. compiler error


Correct Option: C