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What you'll learn?
- What The Java Collections Framework Is Composed Of.
- Learn About The Data Structures Available In The Collection Framework.
- What Are Generics And How To Use Generics.
- How To Create Generic Classes.
- How To Create Generic Interfaces.
- How To Create Generic Functions.
- How To Use Existing Collections Like Lists, Sets And Queues.
- How To Use Java Streams.
- Use Lambda Expressions And Method References In Streams.
- Learn What Java Optionals Are And How To Use Them.
- Learn About Stream Methods Such As Filter, Map, FlatMap And Collect.
Course Overview
Learn about Java Generics and how to create Generic classes. You also learn about Generic Interfaces and Methods.
After learning and understanding Java Generics we then dive into the Java Collections Framework where we learn about data structures such as List, ArrayList, HashMap, HashSet, LinkedList... and so on. Generics are an important part of the Java programming language.
We have extra lessons on Java Optional which helps us avoid null pointer exceptions in Java. You will learn about Optionals because it's knowledge will be applied when you learn about Java Streams API.
Finally, we learn about the Streams API, how it works and the various methods such as filter(), map(), flatMap(), reduce(), collect() ... and so on.
After this course, you should have a solid understanding of the Java Generics, the Collection Framework with its Data Structures and the Java Streams API.
In a nutshell, generics enable types (classes and interfaces) to be parameters when defining classes, interfaces and methods. Much like the more familiar formal parameters used in method declarations, type parameters provide a way for you to re-use the same code with different inputs. The difference is that the inputs to formal parameters are values, while the inputs to type parameters are types. (Java Docs)
Pre-requisites
- Java SDK 11 Installed (Not Compulsory)
- Understand Basics Of Java.
- Understand Java Lambda Expressions And Method References.
Target Audience
- Developers Who Want To Learn About Java Generics.
- Developers Who Want To Learn About The Java Collection Framework And Its Data Structures.
- Developers Who Want To Learn About Java Streams.
Curriculum 88 Lectures 05:25:05
-
Section 1 : Java Generics
- Lecture 2 :
- Intro to Generics
- Lecture 3 :
- Multiple Type Parameters
- Lecture 4 :
- Bounded Types
- Lecture 5 :
- Bounded Types - Interfaces
- Lecture 6 :
- Generic WildCards
- Lecture 7 :
- Bounded WildCards
- Lecture 8 :
- Lower Bound WildCards
- Lecture 9 :
- Generic Method
- Lecture 10 :
- Generic Constructors
- Lecture 11 :
- Generic Interfaces
- Lecture 12 :
- Raw Types
- Lecture 13 :
- Generic Super Class
- Lecture 14 :
- Generic Sub Class
-
Section 2 : Introduction to Java Collection Framework
- Lecture 1 :
- The Collection Framework
- Lecture 2 :
- The Collection Class
- Lecture 3 :
- Intro to ArrayList
- Lecture 4 :
- ArrayList Add Remove Method
- Lecture 5 :
- ArrayList Set, AddAll and RemoveAll
- Lecture 6 :
- ArrayList RemoveIf, Clear and Contains
- Lecture 7 :
- Using Arrays Class
- Lecture 8 :
- Using Iterators
- Lecture 9 :
- Using Spliterators
- Lecture 10 :
- For and ForEachLoop
- Lecture 11 :
- List with Reference Type
- Lecture 12 :
- Create a new list using liftoff
- Lecture 13 :
- Convert List to Array and Vice Versa
- Lecture 14 :
- LinkedList
-
Section 3 : The Set And Queue Interface
- Lecture 1 :
- Introducing HashSet
- Lecture 2 :
- HashSet Capacity and LoadFactor
- Lecture 3 :
- Linked HashSet
- Lecture 4 :
- TreeSet
- Lecture 5 :
- Intro to Comparator
- Lecture 6 :
- TreeSet with Comparator
- Lecture 7 :
- Queues
- Lecture 8 :
- LinkedList Revisited
- Lecture 9 :
- LinkedList as List
- Lecture 10 :
- LinkedList as Queue
- Lecture 11 :
- LinkedList as Deque
- Lecture 12 :
- ProrityQueue
- Lecture 13 :
- ArrayDeque
-
Section 4 : Map Interface And HashMaps Class
- Lecture 1 :
- Maps
- Lecture 2 :
- HashMaps - Put And Get
- Lecture 3 :
- HashMaps - PutIfAbsent
- Lecture 4 :
- HashMap - GetOrDefault
- Lecture 5 :
- HashMaps - Values, KeySet, Remove
- Lecture 6 :
- HashMaps - Remove and Replace
- Lecture 7 :
- HashMaps - ReplaceAll
- Lecture 8 :
- HashMaps - Compute
- Lecture 9 :
- HashMaps - Merge
- Lecture 10 :
- HashMaps - Extra Methods
- Lecture 11 :
- TreeMap
- Lecture 12 :
- LinkedHashMaps
- Lecture 13 :
- Collection Algorithms
- Lecture 14 :
- Comparable Interface, need to check
-
Section 5 : Java Optionals
- Lecture 1 :
- Where Optional is Needed
- Lecture 2 :
- Optional Initialisation
- Lecture 3 :
- Optional isPresent And isEmpty
- Lecture 4 :
- Optional OrElse
- Lecture 5 :
- Optional Map
- Lecture 6 :
- Optional Filter
- Lecture 7 :
- Optional ifPresent
- Lecture 8 :
- Optional on NonNull Return Value
- Lecture 9 :
- Optional on Nullable
-
Section 6 : Java Streams
- Lecture 1 :
- Streams?
- Lecture 2 :
- Creating new Streams
- Lecture 3 :
- Create Streams From Collection
- Lecture 4 :
- Create IntStream from int[] array
- Lecture 5 :
- Sorted, Min and Max Stream Method
- Lecture 6 :
- Min and Max on Primitive Streams
- Lecture 7 :
- Stream Count Method
- Lecture 8 :
- Stream Reduce Method
- Lecture 9 :
- Create Stream from Primitive Values
- Lecture 10 :
- Call Reduce on List of Objects
-
Section 7 : Stream Map Operations
- Lecture 1 :
- Stream Map Operation
- Lecture 2 :
- Stream Map To Int, Double, and Long
- Lecture 3 :
- Map To Object
- Lecture 4 :
- Order of Stream Operations
- Lecture 5 :
- Stream FlatMap Operation
-
Section 8 : More Stream Operations
- Lecture 1 :
- Matching All , Any And None
- Lecture 2 :
- Stream Builder
- Lecture 3 :
- Collect Method
- Lecture 4 :
- Collectors tolist and toset
- Lecture 5 :
- Collectors toMap
- Lecture 6 :
- Collectors PartitioningBy
- Lecture 7 :
- Collectors PartitioningBy with Arguments
- Lecture 8 :
- Collectors GroupingBy
- Lecture 9 :
- Collectors Joining
-
Section 9 : Where To Go From Here
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