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If you complete the course successfully, your electronic Course Certificate will be added to your Accomplishments page - from there, you can print your Course Certificate or add it to your LinkedIn profile.

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This course is currently available only to learners who have paid or received financial aid, when available.

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Learn Reflection with Java

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Learn Reflection with Java

Instructors: Pearson

Included with

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1 module

Gain insight into a topic and learn the fundamentals.

Intermediate level

Recommended experience

5 hours to complete

Flexible schedule

Learn at your own pace

1 module

Gain insight into a topic and learn the fundamentals.

Intermediate level

Recommended experience

5 hours to complete

Flexible schedule

Learn at your own pace

What you'll learn

Master both shallow and deep reflection to access and manipulate Java classes, methods, and fields.
Understand and utilize advanced features including sealed classes, records, arrays, MethodHandles, and VarHandles.
Gain hands-on experience with accessing private members and evaluating performance considerations.
Develop practical skills for dynamic code analysis, serialization, and thread-safe programming in Java.

Skills you'll gain

Tools you'll learn

Details to know

Shareable certificate

Add to your LinkedIn profile

Assessments

5 assignments

Taught in English

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There is 1 module in this course

This course provides a practical introduction to Java Reflection, aimed at developers seeking to enhance their programming skills. Java Reflection enables inspection and manipulation of classes, interfaces, fields, and methods at runtime, even without prior knowledge of their names at compile time. This capability is important for writing dynamic and generic code, developing adaptable frameworks, and improving testing and debugging processes.

The course begins with the basics of reflection and progresses to advanced topics such as sealed classes, records, and array manipulation. It also covers MethodHandle and VarHandle, offering a thorough overview of modern reflection techniques. Each lesson includes practical exercises and demonstrations to reinforce learning. By the end of the course, participants will understand how to use reflection to implement dynamic solutions, assess its impact on Java performance and correctness, and determine appropriate use cases for reflection in their projects.

This module provides a comprehensive exploration of Java Reflection, covering its fundamentals, advanced concepts, and practical applications. Learners will understand how to inspect and manipulate classes, methods, constructors, arrays, and records at runtime, including accessing private members through deep reflection. The module also introduces MethodHandles and VarHandles for efficient, thread-safe operations, and discusses performance implications. By the end, students will grasp both the power and risks of reflection in Java programming.

What's included

29 videos5 assignments

29 videos Total 249 minutes

Introduction 2 minutes
Learning objectives 1 minute
Who Am I? 5 minutes
Why learn reflection? 5 minutes
Class Class 38 minutes
Method 27 minutes
Modifier and AccessFlag 11 minutes
Constructor 12 minutes
Generics 3 minutes
Nested classes 3 minutes
Sealed classes 6 minutes
Records 9 minutes
Exercise 19 minutes
Learning objectives 3 minutes
Making private members accessible 33 minutes
Performance considerations 8 minutes
Learning objectives 4 minutes
Accessing elements 4 minutes
Creating new 1 minute
Exercise 7 minutes
Learning objectives 2 minutes
MethodHandles.Lookup 2 minutes
privateLookupIn() 1 minute
MethodHandle 1 minute
MethodType 15 minutes
VarHandle 6 minutes
Unreflecting 4 minutes
Exercises 12 minutes
Learn Reflection with Java: Summary 8 minutes

5 assignments Total 70 minutes

Introduction to Reflection Quiz 10 minutes
Deep Reflection Quiz 10 minutes
Arrays Quiz 10 minutes
java.lang.invoke Quiz 10 minutes
End of Course Assessment 30 minutes

Instructors

Pearson

268 Courses 48,983 learners

Offered by

Pearson

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Frequently asked questions

Yes, you can preview the first video and view the syllabus before you enroll. You must purchase the course to access content not included in the preview.

If you decide to enroll in the course before the session start date, you will have access to all of the lecture videos and readings for the course. You’ll be able to submit assignments once the session starts.

Once you enroll and your session begins, you will have access to all videos and other resources, including reading items and the course discussion forum. You’ll be able to view and submit practice assessments, and complete required graded assignments to earn a grade and a Course Certificate.