Java Collections Framework: Basics To Advanced Techniques

Learn Java Collections Framework and learn how to manipulate, sort, and store data efficiently in this course!

What you'll learn

Mastery of Java Collections Framework and its core components like ArrayLists, HashSets, HashMaps, and TreeMaps.

Techniques for sorting and handling custom objects in collections.

How to use generics to create reusable, type-safe code.

Practical knowledge of working with data structures like HashSet, TreeSet, and HashMap.

Advanced sorting and searching techniques for Java collections.

Requirements

Basic knowledge of Java programming (variables, loops, methods, and classes).

Familiarity with object-oriented programming concepts like inheritance and polymorphism.

An IDE (such as Eclipse, IntelliJ, or NetBeans) to practice coding examples.

Description

In this course, you will explore the vast capabilities of the Java Collections Framework, one of the most essential aspects of Java programming. Whether you are new to Java or looking to enhance your skills, this course covers everything from arrays to custom objects, generics, and data structures such as HashSet, TreeSet, HashMap, and TreeMap. Each section is packed with hands-on examples and real-world use cases to help you build a solid understanding of Java collections, providing you with the skills to manage and manipulate data structures effectively.Section-Wise Writeup:Section 1: Introduction to Java Collections FrameworkIn this section, we will dive into the basics of the Java Collections Framework, which forms the backbone of any Java-based data handling. You'll learn about its importance, various interfaces, and classes, and how it simplifies data storage and manipulation. The section introduces key concepts like List, Set, and Map interfaces, setting the foundation for more advanced topics.Section 2: Sorting an Array ListIn this section, you’ll learn how to work with ArrayLists in Java, focusing on sorting techniques. You will explore methods to sort simple ArrayLists and also understand how to fetch and handle data from files. The knowledge gained here will prepare you for more advanced handling of lists and data manipulation.Section 3: Sorting an Array List with Custom ClassesThis section moves into sorting ArrayLists that contain custom objects. We will cover how to use custom comparators, override the toString method, and understand the importance of the sort method. This section gives you hands-on experience with sorting lists of complex data types, which is essential for working with business logic or structured data in real applications.Section 4: Exploring HashSetHere, you will learn about the HashSet class in Java, an important collection type for handling unique elements. You will understand how HashSet works, the concept of reference and object equality, and how to use HashSet efficiently for eliminating duplicates from a collection.Section 5: Exploring TreeSetThe TreeSet section dives deeper into the world of sets, focusing on TreeSets. You will learn how TreeSets maintain their elements in sorted order and the nuances of using them for advanced sorting and searching operations. This section will also cover how to work with TreeSet methods to manipulate and access data.Section 6: Mastering GenericsGenerics are a powerful feature in Java that allows you to write flexible and reusable code. In this section, you'll learn how to use generic methods and classes to create type-safe data structures. This section will cover how to implement generics in your own classes and methods, enhancing your ability to handle various types of data while ensuring type safety.Section 7: Working with HashMapHashMap is a widely-used data structure for mapping keys to values. This section introduces you to the HashMap class, its key-value pair structure, and how to perform operations such as adding, removing, and updating elements. You’ll also explore key methods for displaying elements and searching within a map.Section 8: Mastering TreeMapTreeMap offers a sorted version of HashMap. In this section, you will learn how TreeMap works, how to replace old values, and how to define member variables and use comparators for custom sorting. This section will also teach you how to utilize TreeMap in real-world applications that require sorted key-value pairs.Section 9: Understanding WildcardsIn the final section, we will delve into wildcards, which are a fundamental aspect of generics in Java. You will learn how to use wildcards in generic classes and methods, allowing for more flexible and reusable code. This section also covers advanced topics like declaring arrays of wildcards and handling collections with generic types.Conclusion:By the end of this course, you will have a deep understanding of the Java Collections Framework and be able to use its components effectively. From simple lists to complex data structures like TreeMap and HashSet, you’ll be equipped to handle any data manipulation task in Java. Whether you are working on personal projects or in a professional development environment, this course will provide you with the tools to manage data efficiently and create optimized Java applications.

Overview

Section 1: Introduction

Lecture 1 Introduction to Java Collections Framework Training

Section 2: Sorting an Array List

Lecture 2 Sorting an Array List

Lecture 3 How to Fetch Data From File

Section 3: Sorting An Array List Custom Class

Lecture 4 Sorting An Array List Custom Object

Lecture 5 Sorting An Array List Custom Object Continues

Lecture 6 Override to String

Lecture 7 The Sort Method Declaration

Lecture 8 Learning Generics

Lecture 9 Using Generic Classes

Lecture 10 Using Generic Classes Continues

Lecture 11 How to Use Generic Methods

Lecture 12 Creating New Java Class

Lecture 13 Sort Method

Lecture 14 Jukebox and Song

Lecture 15 Sort the List

Lecture 16 Sort the List Continues

Section 4: Hashset

Lecture 17 Hashset

Lecture 18 Reference Equality

Lecture 19 Object Equality

Section 5: Tree Set

Lecture 20 Tree Set

Lecture 21 Tree Set Continues

Section 6: Generics

Lecture 22 Using Generic Methods

Lecture 23 More on Generic Methods

Lecture 24 How to Right Generics Classes and Method

Section 7: Hashmap

Lecture 25 Hashmap

Lecture 26 Hashmap Key and Value

Lecture 27 Display the Elements

Lecture 28 Key Methods

Lecture 29 Value for Key

Section 8: TreeMap

Lecture 30 TreeMap

Lecture 31 Old Value Replaced

Lecture 32 Define Member Variables

Lecture 33 TreeMap Comparator

Lecture 34 Basis of Salary

Section 9: Wild Cards

Lecture 35 Wild Cards

Lecture 36 Declare and Create a Dog Array

Lecture 37 Array List Animal

Lecture 38 Collection and Generic Framework

Beginners who are new to Java and want to learn about collections.,Intermediate Java developers looking to refine their understanding of the Java Collections Framework.,Developers interested in mastering data manipulation and creating efficient Java applications.