Java Language Fundamentals

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Java Language Fundamentals

Authors: Sander Mak, Jim Wilson, Richard Warburton, Sarah Holderness, Jose Paumard, Esteban Herrera , Maurice Naftalin, Zoran Horvat, Richard Monson-Haefel

Java is one of the most widely used programming languages in the world. Originally developed by Sun Microsystems in the 1990s, Java is used to develop everything from web... Read more

What you will learn

  • Java language syntax and fundamentals
  • Java collections
  • Working with Streams in Java
  • Collections
  • Lambda expressions
  • Object oriented programming
  • Exception handling
  • Java IO
  • Java Database Connectivity (JDBC)
  • Java's HttpClient

Pre-requisites

No previous experience is required, and all necessary tools and concepts will be introduced throughout the path.

Beginner

These introductory Java courses will teach you the basics of the Java language and how to effectively work with Java. Some of the concepts you will master in this section include control flow in Java, object orientation and collections. By the end of these courses you will have the skillset to start writing your own Java applications.

Modern Java: The Big Picture

国内自拍亚洲精品视频_一级做人爱c视频正版免费,2by Sander Mak

Nov 2, 2018 / 1h 59m

1h 59m

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Description

You’ve heard about Java and want to get started with it, but what is Java really about? In this course, Modern Java: The Big Picture, you'll gain an overview of what you can expect from Java as a development platform. First, you'll learn the answers to important questions like “What does Java code look like?" and "How is it run?” Next, you'll explore the JDK and learn when you should use Java and when you shouldn't. Finally, you’ll discover the most popular libraries, practices, and tools used in modern Java development. After finishing this course, you’ll have a broad outlook on modern Java development and you will know which Java skills to focus on next in your personal development.

Table of contents
  1. Course Overview
  2. Introducing the Java Platform
  3. Adopting Java
  4. From Desktop to Enterprise Java to the Cloud
  5. Popular Java Libraries
  6. Practices and Common Tools
  7. Examining Alternative JVM Languages

Setting up a Java Development Environment

by Sander Mak

Jan 3, 2020 / 51m

51m

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Description

To develop Java applications you need the right tools installed. In this course, Setting up a Java Development Environment, you will go through all the steps necessary to set up a fully functioning Java development environment. First, you will learn how to install and use the Java Development Kit, which is required to compile and run Java code. Next, you will see how an IDE like IntelliJ makes Java development more productive. Last, you will explore how to package Java applications into JAR files for wider distribution. After finishing this course, you will have a working Java development environment, so you can start your Java learning journey.

Table of contents
  1. Course Overview
  2. Installing and Running Java
  3. Using IntelliJ for Java Development
  4. Packaging Java Applications

Java Fundamentals: The Java Language

by Jim Wilson

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7h 43m

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Description

This course provides complete coverage of the Java programming language giving you the strong language foundation required for any Java-based development environment. Whether targeting a client-based, server-side, or Android environment, this course provides you with everything you need to quickly ramp up and become an effective Java programmer.

Table of contents
  1. Course Overview
  2. Introduction and Setting up Your Environment
  3. Creating a Simple App
  4. Variables, Data Types, and Math Operators
  5. Conditional Logic, Looping, and Arrays
  6. Representing Complex Types with Classes
  7. Class Initializers and Constructors
  8. A Closer Look at Parameters
  9. Class Inheritance
  10. More About Data Types
  11. Exceptions and Error Handling
  12. Working with Packages
  13. Creating Abstract Relationships with Interfaces
  14. Static Members, Nested Types, and Anonymous Classes

Java Fundamentals: Collections

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Mar 7, 2016 / 4h 3m

4h 3m

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Description

Working with data is fundamental to any business problem. Java Collections are data structures designed to store and process data in memory. We start with why you want to use collections instead of arrays, cover the capabilities of Lists, Sets, and Maps and explain the different data structure tradeoffs.

Table of contents
  1. What Are Collections and Why Use Them?
  2. Defining and Iterating Collections
  3. Collections with Iteration Order: Lists
  4. Collection with Uniqueness: Sets
  5. Collections with Modification Order: Queues, Deques, and Stacks
  6. Collections of Pairs: Maps
  7. Collection Operations
Interactive

Java: Using Maps

国内自拍亚洲精品视频_一级做人爱c视频正版免费,2by Sarah Holderness

国内自拍亚洲精品视频_一级做人爱c视频正版免费,2Jun 13, 2019 / 28m

28m

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Description

国内自拍亚洲精品视频_一级做人爱c视频正版免费,2Learn how to organize keys and values with a Map, and then practice what you've learned.

Table of contents
  1. Using Maps3 Videos - 4 Challenges
Interactive

Java: Using Sets

by Sarah Holderness

Jun 13, 2019 / 32m

32m

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Description

国内自拍亚洲精品视频_一级做人爱c视频正版免费,2Learn how to organize unique data into a collection with a Set, and then practice what you've learned.

Table of contents
  1. Using Sets3 Videos - 4 Challenges
Interactive

Java: Using Lists

国内自拍亚洲精品视频_一级做人爱c视频正版免费,2by Sarah Holderness

国内自拍亚洲精品视频_一级做人爱c视频正版免费,2Jun 13, 2019 / 32m

32m

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Description

Learn how to organize data into an ordered collection with a List, and then practice what you've learned.

Table of contents
  1. Using Lists3 Videos - 5 Challenges
Interactive

Java: Using Lambda Expressions

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Jun 19, 2019 / 20m

20m

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Description

In this course, you will learn how to pass code as an argument with lambda expressions, while at the same time making your code more readable and concise.

Table of contents
  1. Using Lambda Expressions2 Videos - 4 Challenges

Intermediate

Java is a feature rich language and the courses in this section are designed to help you explore all you can do with Java. This includes working with generics, using lambda expressions and how to take advantage of Java streams.

Java Fundamentals: The Core Platform

by Jim Wilson

Jul 21, 2016 / 7h 26m

7h 26m

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Description

国内自拍亚洲精品视频_一级做人爱c视频正版免费,2Java is the most in-demand programming language skill amongst software developers, and one of the most important skills for big data specialists. This course, Java Fundamentals: The Core Platform, provides thorough coverage of the core Java platform, giving you the foundation you need to begin developing Java applications using the features and capabilities of the Java Runtime Environment (JRE), as well as providing you with the skills you need to quickly ramp-up and begin developing effectively with Java using the JRE. First, you'll learn about working with streams, files, and the file system. You'll also learn about I/O topics specific to working with files such open/closing files, detecting end-of-file, and buffering. Next, you'll learn about configuring application execution and environments, the features available, and detailed discussions of the PATH and CLASSPATH environment variables that affect the Java runtime. Finally, you'll learn about multithreading and concurrency, taking a look at the basic ideas of the thread startup lifecycle along with the more sophisticated executor service. After watching this course, you'll be ready to begin working within any of the many environments that rely on Java.

Table of contents
  1. Course Overview
  2. Introduction
  3. Input and Output with Streams and Files
  4. String Formatting and Regular Expressions
  5. Working with Collections
  6. Controlling App Execution and Environment
  7. Capturing Application Activity with the Java Log System
  8. Multithreading and Concurrency
  9. Runtime Type Information and Reflection
  10. Adding Type Metadata with Annotations
  11. Persisting Objects with Serialization

Java Fundamentals: The Java Reflection API Method Handles

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Jan 18, 2019 / 3h 10m

3h 10m

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Description

As a Java developer, mastering the reflection API allows you to build powerful frameworks that will bring advanced functionalities to your application. In this course, Java Fundamentals: The Java Reflection API Method Handles, you will learn how you can use reflection API efficiently. This API is very technical, so this course is organized around the study of two real-life use cases: the building of an Object Relational Mapper, on the model of Hibernate, and the creation of a dependency injection framework, on the model of Spring. First, you will understand how to introspect classes and objects and how to discover their structure. Next, you will learn how to build objects without knowing their class at compile time, to set values to their fields and to invoke their methods. Finally, you will understand the performance issues of this API, and be able to use method handles and var handles to fix these issues. By the end of this course, you will be able to master the reflection API that will help you in creating performant and versatile Java applications.

Table of contents
  1. Course Overview
  2. Introducing Java Reflection
  3. Creating an Object Metamodel Using Annotations and Reflection
  4. Creating an Object Relational Mapper Using an Object Metamodel
  5. Injecting Dependencies in an Object Using an Object Metamodel
  6. Improving Performance Using Method Handles

Java Fundamentals: Asynchronous Programming Using CompletionStage

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Jul 30, 2018 / 3h 4m

3h 4m

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Description

As a Java developer, being able to create asynchronous systems allows you to develop very efficient applications, that need both throughput and performance. In this course, Java Fundamentals: Asynchronous Programming Using CompletionStage, you will learn all the patterns brought to you by this API. First, you will learn the concepts of asynchronous programming: tasks, non-blocking calls and multi-threaded systems. Then, you will see how to build data processing pipelines where the completion of a first task automatically triggers the execution of a next task, passing data to it. Finally, you will see how to create performant systems by controlling the execution of each task in the right thread. Mastering all of this will help you in creating performant and error-free asynchronous systems with the only dependency being the JDK itself.

Table of contents
  1. Course Overview
  2. Introducing Asynchronous vs. Concurrent Tasks
  3. Setting up an Asynchronous Operations with CompletionStage
  4. Triggering a Task on the Completion of Other Tasks
  5. Dealing with Exception in the CompletionStage Pipeline
  6. Creating Performant Asynchronous Pipelines with CompletionStage

Java Fundamentals: Generics

by Richard Warburton

Oct 31, 2019 / 4h 8m

4h 8m

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Description

国内自拍亚洲精品视频_一级做人爱c视频正版免费,2Java’s powerful generics has been available to developers for ten years now and is extensively used throughout both core and third party libraries. Unfortunately, it's not as well understood as it could be. This course is here to help. We’ll both shine a light on the common use cases of generics on classes, methods, or interfaces and also peer into some of the darker corners such as type bounds and wildcards.

Table of contents
  1. The What and Why of Java Generics
  2. Java's Generic Collections and Friends
  3. Generic Classes and Interfaces
  4. Generics on Methods
  5. Wildcards
  6. Raw Types and Compatibility
  7. Reflection
  8. Advanced Topics

Working with Nulls in Java

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Dec 30, 2019 / 1h 13m

1h 13m

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Description

How many times have you thought "this object can never be null" only to be proven wrong? In this course, Working with Nulls in Java, you'll learn best practices for effectively handling nulls and avoid NullPointerExceptions. First, you'll see what nulls mean and some common ways to deal with them. Next, you'll explore how to use annotations to check for nulls. Finally, you'll discover how to use the Null Object pattern and the Optional type to reduce unexpected exceptions even further. When you're finished with this course, you'll understand the different techniques to handle nulls effectively in Java programs.

Table of contents
  1. Course Overview
  2. Working with Reference Types and Nulls
  3. Checking for Null Using Annotations
  4. Using the Null Object Pattern
  5. Using Optional Instead of Null

Programming with Dates and Times in Java 8

by Maurice Naftalin

Jul 23, 2018 / 2h 12m

2h 12m

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Description

Handling dates and times is an essential part of most business and scientific applications. In this course, Programming with Dates and Times in Java 8, you will learn all about the much-needed new library in Java 8: the java.time API. First, you will learn the basic use of the core java.time classes. Next, you will discover how the library handles the complexities of time zones and daylight saving time transitions. Finally, you will explore the interconversion of java.time classes with other Java types and with database representations. When you are finished with this course, you will have a thorough knowledge of how to use this modern Java library for the fundamentally important problems of handling dates and times in your applications.

Table of contents
  1. Course Overview
  2. Overview of java.time
  3. The Basics of java.time
  4. Working with Time Zones
  5. Formatting and Parsing

Making Your Java Code More Object-oriented

by Zoran Horvat

Aug 26, 2019 / 2h 13m

2h 13m

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Description

国内自拍亚洲精品视频_一级做人爱c视频正版免费,2Procedural code can be replaced with objects to increase correctness, flexibility, and maintainability. In this course, Making Your Java Code More Object-oriented, you’ll learn how to design truly object-oriented classes in the Java programming language. First, you’ll learn how to represent a discrete object state and behavior to avoid imperative branching constructs. Next, you’ll discover that null references are a needless pain. Finally, you'll explore alternatives to null - substitute objects and optional objects. When you're finished with this course, you’ll have the skills and knowledge of designing classes that avoid traditional imperative constructs, with features resulting from orchestrating well-encapsulated objects rich in behavior.

Table of contents
  1. Course Overview
  2. Attaining Extensibility with Object-oriented Code
  3. Rendering Branching over Boolean Flags Obsolete
  4. Using Immutable Objects and Value Objects
  5. Leveraging Special Case Objects to Remove Null Checks
  6. Turning Optional Calls into Calls on Optional Objects

Mastering Object-oriented Programming in Java

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Nov 6, 2019 / 3h 21m

3h 21m

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Description

Procedural implementation is hurting flexibility and maintainability of code to such an extent that further development often becomes nearly impossible. In this course, Mastering Object-oriented Programming in Java, you’ll develop skills to help you design truly object-oriented code when modeling complex and convoluted business logic. First, you’ll learn the power of streams as a replacement for explicit loops and branching, and how they can be turned more readable and easier to manage. Next, you’ll discover the realm of fluent interface designs, that will help construct composable domain-related code. Finally, you'll explore alternatives to hard-coded decisions with the Rules design pattern. By the end of this course, you will gain insight on how rules can become composable and flexible, taming even the scariest pieces of domain logic.

Table of contents
  1. Course Overview
  2. Turning Everything into Objects
  3. Staying Focused on Domain Logic with Streams
  4. Untangling Operations from Structure on Business Data
  5. Advancing to a Domain - Specific Language
  6. Increasing Flexibility by Removing Enums and Switch Statements
  7. Turning Chained Branching into the Chain of Rule Objects
  8. Refactoring to Bind It All Together

Accessing Data with Java

Every program needs to access and write information. Two of the most common ways to do that today are by using relational databases and calling APIs. The courses in this section are designed to help you understand how to do this from your Java programs.

Java Fundamentals: HttpClient

国内自拍亚洲精品视频_一级做人爱c视频正版免费,2by Sander Mak

国内自拍亚洲精品视频_一级做人爱c视频正版免费,2May 15, 2019 / 1h 45m

1h 45m

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Description

国内自拍亚洲精品视频_一级做人爱c视频正版免费,2It used to be that performing HTTP calls in Java meant relying on an external library like Apache HttpClient. Since Java 11, a modern HTTP client is now part of the core platform. In this course, Java Fundamentals: HttpClient, you will gain the ability to work with this HttpClient API. First, you will learn to use HttpClient in a synchronous and asynchronous manner, including the use of CompletableFuture. Next, you will discover how to configure and use HttpClient in different scenarios, focusing on secure communication as well. Finally, you will explore some of the more advanced features of HttpClient, such as HTTP/2 Server Push, WebSocket communication, and Reactive Streams integration. When you're finished with this course, you will have the skills and knowledge of the HttpClient API needed to use it effectively in your own applications.

Table of contents
  1. Course Overview
  2. Introducing HttpClient
  3. Performing Your First HTTP Requests
  4. Using HttpClient
  5. Security
  6. Exploring Advanced HttpClient Features

Java Core Libraries: JDBC

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Oct 14, 2019 / 1h 45m

1h 45m

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Description

国内自拍亚洲精品视频_一级做人爱c视频正版免费,2Being able to read and write data to a relational database is an absolute, must-have skill when working with Java applications. In this course, Java Core Libraries: JDBC, you will gain the ability to access and modify data in relational databases using the JDBC API. First, you will learn how to connect the JDBC API to a database. Next, you will discover how to read and update data in a database using the JDBC API. Finally, you will explore advanced techniques for working with large chunks of data, calling stored procedures, using instance pooling, transactions, and the JDBC RowSet. When you’re finished with this course, you will have the skills and knowledge needed to utilize the JDBC API in your work with complete confidence.

Table of contents
  1. Course Overview
  2. Overview and Setup
  3. Connecting JDBC to the Relational Database
  4. Using JDBC to Query Databases
  5. Using JDBC to Update Databases
  6. Using Blobs, Clobs and CallableStatements
  7. Using Connection Pooling, Transactions, and RowSets

Java Releases

国内自拍亚洲精品视频_一级做人爱c视频正版免费,2Keeping up with the changes that come with new versioning can be challenging. However, as a professional developer, this is an important aspect of staying on top of the learning curve.

国内自拍亚洲精品视频_一级做人爱c视频正版免费,2In this section, you will find information on the different versions of the Java platform and a succinct comparison with the previous version.

What’s New in Java 13

by Sander Mak

国内自拍亚洲精品视频_一级做人爱c视频正版免费,2Aug 9, 2019 / 46m

46m

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Description

Java 13 is already the second release of Java in 2019. In this course, What’s New in Java 13, you'll get an overview of all the important features in Java 13. First, you will learn about API changes, such as updates to the ByteBuffer API. Next, you will discover a preview Java language feature called Text Blocks. Finally, you will look at platform changes, looking at how the JDK reimplements the Socket API and improves upon the Application Class Data Sharing feature. When you're finished with this course, you will be ready to make the most of Java 13 in your own projects.

Table of contents
  1. Course Overview
  2. Java 13 API Updates
  3. Preview Feature: Text Blocks
  4. Platform Changes

What's New in Java 12

by Sander Mak

Mar 18, 2019 / 1h 8m

1h 8m

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Description

国内自拍亚洲精品视频_一级做人爱c视频正版免费,2Keeping up with Java can be a challenging task. Only 6 months after the release of Java 11, comes Java 12. In this course, What's New in Java 12, you get an overview of all the important new features in Java 12. First, you will learn about API changes, such as the CompactNumberFormat API and new methods on the String class. Next, you will discover a preview Java language feature called Switch Expressions. Finally, you will explore how to use JMH, a micro-benchmarking tool for Java code that is heavily used in JDK 12 itself. When you're finished with this course, you'll be ready to make the most of Java 12 in your own projects.

Table of contents
  1. Course Overview
  2. Java 12 API Updates
  3. Preview Feature: Switch Expressions
  4. Micro-benchmarking with JMH
  5. JVM Changes

What’s New in Java 11: Long-term Support

by Sander Mak

国内自拍亚洲精品视频_一级做人爱c视频正版免费,2Sep 14, 2018 / 1h 10m

1h 10m

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Staying up to speed with Java is difficult for any Java developer, as Java 11 is released only six months after Java 10. In this course, What's New in Java 11: Long-term Support, you'll learn about the new and most important features in Java 11. First, you'll learn about the accelerated release schedule and how Java 11 is different. Next, you'll dive into the many deprecations and removals that happened in Java 11 that may affect your codebases. There are new library and language features to explore as well, such as an all-new HttpClient API. Last, you'll learn about performance and security enhancements in this release. When you're finished with this course, you'll be ready to make the most of Java 11 in your own projects.

Table of contents
  1. Course Overview
  2. Introducing Java 11
  3. Deprecations and Removals
  4. Language and Library Improvements
  5. Performance and Security Improvements

What's New in Java 9

国内自拍亚洲精品视频_一级做人爱c视频正版免费,2by Sander Mak

Sep 14, 2017 / 3h 33m

3h 33m

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Description

Java 9 is packed with new features. In this course, What's New in Java 9, you'll get an overview of the most important changes to the language and libraries. First, you'll delve into the module system, introducing modules into the Java language. Then, you'll discover jshell, a new tool for interactively experimenting with Java code. Finally, you'll explore smaller and incremental changes, such as improvements to APIs like Stream and Optional, the addition of collection factory methods, and newly introduced APIs such as ProcessHandle and HttpClient. When you're finished with this course, you'll be ready to make the most of Java 9 in your own projects.

Table of contents
  1. Course Overview
  2. The Java Platform Module System
  3. Introducing JShell
  4. Small Language and Library Improvements
  5. Exploring the HTTP/2 and Process APIs
  6. Desktop Java Enhancements
  7. Performance and Security Enhancements

Java 9 Modularity: First Look

by Sander Mak

Nov 2, 2016 / 2h 4m

2h 4m

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Description

The upcoming Java 9 release delivers a brand new module system as its flagship feature. In this course, Java 9 Modularity: First Look, both the concepts and practice behind modular development are introduced. First, you'll learn what modules are and how modular design using the Java module system increases the flexibility, maintainability, and security of your applications. Next, using a Java 9 Early Access release, these concepts are illustrated with real, working code. Finally, the issue of migrating existing applications to the new Java module system is addressed as well, with features such as automatic modules. When you're finished with this course, terms like encapsulation and explicit module dependencies will be no secret to you. After this course, you'll be ready for modular development with Java 9.

Table of contents
  1. Course Overview
  2. Introducing Java 9 Modularity
  3. Creating Modules
  4. Working with Modules
  5. Exposing and Consuming Services
  6. Linking Modules
  7. Preparing for Java 9
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