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 3

Reading and Writing Files in Java

Summary

Instructions require summarizing content in under 250 words, excluding sponsors and off-topic elements, while avoiding any introductory descriptions.

Concept Check

0/10

What exception occurs when a file is not found in Java I/O?

FileNotFoundException is thrown

IOException occurs

NullPointerException happens

SecurityException arises

How does BufferedWriter improve file writing in Java?

Adds encryption automatically

Increases file size

Reduces I/O operations through buffering

Slows down writing process

What is the purpose of RandomAccessFile in Java?

Only sequential file access

Exclusively for text files

Allows reading and writing at any file position

Handles network streams

In Java NIO, what does ByteBuffer do?

Replaces traditional streams

Encrypts data automatically

Directly writes to files

Manages data in a buffer for I/O

Why use FileChannel over FileInputStream?

Supports non-blocking and asynchronous I/O

Faster for small files

Easier exception handling

Built-in compression

What happens if you don't close a FileWriter in Java?

Data writes faster

Resources may leak causing errors

Resources may leak causing errors

File gets deleted automatically

Which exception is thrown when a file is not found?

FileNotFoundException occurs

IOException is thrown

NullPointerException happens

FileNotFoundException occurs

What is the purpose of BufferedWriter in Java?

Handling network files

Efficient writing with buffering

Efficient writing with buffering

Reading files quickly

How does Java handle character encoding in FileReader?

Uses default platform encoding

Uses default platform encoding

Always uses UTF-8

Requires manual specification

What is a risk of using Scanner for large files?

High memory consumption possible

High memory consumption possible

Faster than BufferedReader

Automatic file closing

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NextReal-World Project: Building a Simple Text File Processor