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Java 8 Fundamentals

The Java Reflection API Method Handles

The Reflection API brings class and object introspection to Java, on top of which Spring and Hibernate are built. This course covers object creation, field modification, and method invocation.

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 8 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.

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What's inside

Syllabus

Course Overview

Introducing Java Reflection

Creating an Object Metamodel Using Annotations and Reflection

Creating an Object Relational Mapper Using an Object Metamodel

Injecting Dependencies in an Object Using an Object Metamodel

Improving Performance Using Method Handles

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Teaches core principles that are essential in Java development

Builds foundational skills in reflection API, which is fundamental in building advanced Java applications

Provides a comprehensive study of Java Reflection API, enabling learners to master its concepts and applications

Applicable to both beginners and intermediate learners seeking to enhance their Java development skills

Taught by Jose Paumard, an experienced instructor recognized in the Java development community

Utilizes real-life use cases to illustrate the practical applications of reflection API

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Activities

Be better prepared before your course. Deepen your understanding during and after it. Supplement your coursework and achieve mastery of the topics covered in Java 8 Fundamentals: The Java Reflection API Method Handles with these activities:

Review Core Java Concepts

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Refresh your knowledge of core Java programming concepts, such as object-oriented programming, data structures, and algorithms, to strengthen your foundation for this course.

Browse courses on Java 8

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Review the basics of Java syntax, including data types, operators, and control flow.
Revisit object-oriented programming principles, such as inheritance, polymorphism, and encapsulation.
Recall common data structures used in Java, such as arrays, linked lists, and hash tables.

Review the basics of object-oriented programming

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Strengthen your understanding of the foundations of Java.

Browse courses on Object-Oriented Programming

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Review the concepts of classes, objects, methods, and fields.
Refresh your knowledge of inheritance, polymorphism, and encapsulation.

Identify experienced Java developers who can provide guidance on reflection

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Connect with experts to gain insights from their experience

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Network with Java developers at meetups, conferences, or online forums.
Reach out to potential mentors and express your interest in learning about reflection.

Seven other activities

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Read Java Generics and Collections

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Build a deeper understanding of Java Generics and Collections

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Review the basics of generics, such as type parameters, wildcards, and bounded types.
Explore the different types of collections available in Java, such as lists, sets, and maps.
Learn how to use generics and collections to improve the code quality, performance, and maintainability of your Java applications.

Explore online tutorials on advanced reflection techniques

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Expand your knowledge of reflection by exploring tutorials from experts.

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Identify online tutorials that cover advanced reflection techniques.
Follow the tutorials and complete the exercises.

Attend Java User Group Meetups

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Connect with other Java developers, share knowledge, and stay updated on industry trends by attending Java user group meetups.

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Locate and join local Java user groups through online platforms or social media.
Attend regular meetups and participate in discussions, presentations, and networking opportunities.

Collaborate with peers on solving reflection-related problems

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Benefit from peer support and exchange ideas

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Join or create a study group focused on reflection.
Discuss reflection-related problems with your peers.
Work together to find solutions and share your knowledge.

Coding challenges on method handles

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Reinforce your understanding of method handles with practice problems.

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Practice creating method handles for different types of methods.
Experiment with invoking method handles with different arguments.
Solve coding puzzles that involve method handles.

Build a Java application that uses reflection to inspect and modify objects

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Apply your knowledge of reflection to create a practical tool.

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Design the architecture of your application.
Implement the core functionality of your application using the reflection API.
Test your application to ensure that it works correctly.

Develop a Java library that provides a simplified API for working with reflection

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Challenge yourself by creating a library that enhances the usability of reflection.

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Research existing reflection libraries and identify areas for improvement.
Design the API for your library.
Implement the core functionality of your library.
Test your library to ensure that it works correctly.
Publish your library to a public repository.

Career center

Learners who complete Java 8 Fundamentals: The Java Reflection API Method Handles will develop knowledge and skills that may be useful to these careers:

Full-Stack Developer

A Full Stack Developer designs, develops, and maintains both the front-end and back-end of web applications. This course can help you prepare for a career as a Full Stack Developer by teaching you how to use the Java Reflection API to build powerful and versatile web applications. The skills you learn in this course will be essential for success as a Full Stack Developer.

See salaries and explore the career path for Full-Stack Developer

Application Developer

An Application Developer designs and builds custom software applications. This course can help you prepare for a career as an Application Developer by teaching you how to use the Java Reflection API to build powerful and versatile Java applications. The skills you learn in this course will be essential for success as an Application Developer.

See salaries and explore the career path for Application Developer

Front-End Developer

A Front-End Developer designs and develops the user interface of web applications. This course can help you prepare for a career as a Front-End Developer by teaching you how to use the Java Reflection API to build user interfaces that are both visually appealing and easy to use. The skills you learn in this course will be essential for success as a Front-End Developer.

See salaries and explore the career path for Front-End Developer

Back-End Developer

A Back-End Developer designs, develops, and maintains the server-side of web applications. This course can help you prepare for a career as a Back-End Developer by teaching you how to use the Java Reflection API to build powerful and scalable back-end systems. The skills you learn in this course will be essential for success as a Back-End Developer.

See salaries and explore the career path for Back-End Developer

Software Engineer

A Software Engineer designs, develops, and maintains software systems. This course can help you prepare for a career as a Software Engineer by teaching you how to use the Java Reflection API to build high-quality, reliable software. The skills you learn in this course will be essential for success as a Software Engineer.

See salaries and explore the career path for Software Engineer

Product Manager

A Product Manager defines and manages the development of software products. This course can help you prepare for a career as a Product Manager by teaching you how to use the Java Reflection API to define and manage the development of software products. The skills you learn in this course will be essential for success as a Product Manager.

See salaries and explore the career path for Product Manager

Systems Administrator

A Systems Administrator installs, configures, and maintains computer systems. This course can help you prepare for a career as a Systems Administrator by teaching you how to use the Java Reflection API to manage and administer computer systems. The skills you learn in this course will be essential for success as a Systems Administrator.

See salaries and explore the career path for Systems Administrator

Security Analyst

A Security Analyst identifies and mitigates security risks. This course can help you prepare for a career as a Security Analyst by teaching you how to use the Java Reflection API to identify and mitigate security risks. The skills you learn in this course will be essential for success as a Security Analyst.

See salaries and explore the career path for Security Analyst

Software Architect

A Software Architect designs and develops the architecture of software systems. This course can help you prepare for a career as a Software Architect by teaching you how to use the Java Reflection API to design and develop the architecture of software systems. The skills you learn in this course will be essential for success as a Software Architect.

See salaries and explore the career path for Software Architect

Data Scientist

A Data Scientist collects, analyzes, and interprets data. This course can help you prepare for a career as a Data Scientist by teaching you how to use the Java Reflection API to collect, analyze, and interpret data. The skills you learn in this course will be essential for success as a Data Scientist.

See salaries and explore the career path for Data Scientist

Technical Project Manager

A Technical Project Manager plans, executes, and controls software development projects. This course can help you prepare for a career as a Technical Project Manager by teaching you how to use the Java Reflection API to plan, execute, and control software development projects. The skills you learn in this course will be essential for success as a Technical Project Manager.

See salaries and explore the career path for Technical Project Manager

Machine Learning Engineer

A Machine Learning Engineer designs, develops, and deploys machine learning models. This course can help you prepare for a career as a Machine Learning Engineer by teaching you how to use the Java Reflection API to design, develop, and deploy machine learning models. The skills you learn in this course will be essential for success as a Machine Learning Engineer.

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Business Analyst

A Business Analyst gathers and analyzes business requirements. This course can help you prepare for a career as a Business Analyst by teaching you how to use the Java Reflection API to gather and analyze business requirements. The skills you learn in this course will be essential for success as a Business Analyst.

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Database Administrator

A Database Administrator designs, develops, and maintains databases. This course can help you prepare for a career as a Database Administrator by teaching you how to use the Java Reflection API to interact with databases. The skills you learn in this course will be essential for success as a Database Administrator.

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Network Administrator

A Network Administrator designs, implements, and maintains computer networks. This course can help you prepare for a career as a Network Administrator by teaching you how to use the Java Reflection API to manage and administer computer networks. The skills you learn in this course will be essential for success as a Network Administrator.

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Reading list

We've selected 17 books that we think will supplement your learning. Use these to develop background knowledge, enrich your coursework, and gain a deeper understanding of the topics covered in Java 8 Fundamentals: The Java Reflection API Method Handles.

Design Patterns

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Is the classic work on design patterns. It provides a comprehensive overview of design patterns and how to use them effectively.

Java 8 Fundamentals

The Java Reflection API Method Handles

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What's inside

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