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BCA/M-22 Programming in Core Java Quiz

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Questions and Answers

How can you distinguish between String and StringBuffer classes in Java?

StringBuffer is synchronized while String is not synchronized (correct)
String has more built-in methods for string manipulation than StringBuffer
StringBuffer allows for direct manipulation of characters without creating a new instance
String is mutable while StringBuffer is immutable

What is the purpose of the labelled break statement in Java?

To create a new loop within the current loop
To skip to the next iteration of the loop
To terminate the current loop and resume execution after the loop (correct)
To restart the loop from the beginning

What does inheritance mean in the context of object-oriented programming in Java?

It allows a class to inherit properties and behavior from another class (correct)
It refers to creating an object from a class
It allows sharing of methods between classes
It refers to creating multiple instances of a class

What are exceptions in Java programming?

Unpredictable events that disrupt the normal flow of a program's execution (A) Signup and view all the answers

What is the purpose of AWT (Abstract Window Toolkit) in Java?

To create platform-independent graphical user interfaces (A) Signup and view all the answers

Explain the major features of object-oriented programming.

Features include encapsulation, inheritance, and polymorphism. Signup and view all the answers

What is the purpose of a labelled break and continue in Java?

They allow for more precise control over looping constructs. Signup and view all the answers

How can you create a class in Java?

By using the 'class' keyword followed by the class name and class body. Signup and view all the answers

Define inheritance in Java.

Inheritance allows a class to inherit attributes and methods from another class. Signup and view all the answers

State the major difference between String and StringBuffer classes in Java.

String objects are immutable, while StringBuffer objects are mutable. Signup and view all the answers