CourseGenix

Java Fundamentals

5 Units21 Lessons

Unit 1

Basics

Introduction to Java Syntax and Hello World Program

Understanding Variables and Data Types in Java

Basic Operators in Java

Real-World Project: Building a Simple Calculator in Java

Input and Output Operations in Java

Unit 2

Control Structures and Loops

Real-World Project: Creating a Number Guessing Game with Loops

Implementing For and While Loops in Java

Using If-Else and Switch Statements in Java

Unit 3

Methods and Functions

Defining and Calling Methods in Java

Working with Parameters and Return Types in Java Methods

Method Overloading in Java

Real-World Project: Developing a String Utility Methods Library

Unit 4

Object-Oriented Programming

Creating Classes and Objects in Java

Inheritance and Polymorphism in Java

Encapsulation and Abstraction in Java

Using Interfaces and Abstract Classes in Java

Real-World Project: Designing a Basic Inventory Management System

Unit 5

Exception Handling and File I/O

Handling Exceptions with Try-Catch in Java

Creating and Using Custom Exceptions in Java

Reading and Writing Files in Java

Real-World Project: Building a Simple Text File Processor

Unit 5•Chapter 2

Creating and Using Custom Exceptions in Java

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What is required to create a checked custom exception in Java?

Implement Serializable interface.

Extend Exception class directly.

Extend Exception class directly.

Extend RuntimeException class.

How do you add a custom message to a custom exception?

Use a constructor with String parameter.

Use a constructor with String parameter.

Override the toString method.

Add a static method.

What keyword is used to throw a custom exception?

The throw keyword.

The throw keyword.

The throws keyword.

The new keyword.

Why use serialVersionUID in custom exceptions?

For serialization compatibility.

For serialization compatibility.

To add custom methods.

To extend Exception.

How to handle a custom exception in a method?

Use try-catch block.

Use try-catch block.

Extend the exception class.

Declare in throws clause.

What must a custom checked exception in Java extend?

The Error class directly

The Throwable class only

The RuntimeException class

The Exception class directly

How do you throw a custom exception in Java?

Using the catch keyword

Using the throws keyword

Using the throw keyword

Using the try keyword

What is required for a custom exception to be serializable?

Use a static block

Override toString method

Extend RuntimeException only

Implement Serializable interface

In which block can you handle a custom exception?

In the catch block

In the main method

In the finally block

In the try block

What happens if a custom exception is not caught?

Program terminates abruptly

Exception is ignored

Program continues normally

Finally block runs only

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