Java Refactoring

O'Reilly Media

Java to Kotlin: A Refactoring Guidebook          

Java Essentials, Refactoring, and Multithreading: Complete Guide on Writing Efficient, Scalable, and Maintainable Java Code (English Edition)

Packt Publishing

Refactoring in Java: Improving code design and maintainability for Java developers (English Edition)

Java Refactoring Techniques for Legacy Code: Modernize, Simplify, and Improve Your Old Java Projects with Proven Patterns and Tools (English Edition)

EYROLLES

Refactoring des applications Java / J2EE: SQL et PL/SQL

Manning Publications

Modern Java in Action: Lambdas, Streams, Functional and Reactive Programming

MITP Verlags GmbH

Clean Code - Refactoring, Patterns, Testen und Techniken für sauberen Code: Deutsche Ausgabe

dpunkt.Verlag

Einfach Java: Gleich richtig programmieren lernen

Independently published

Java Functional Programming Made Simple: A Practical Guide with Examples

Dpunkt.Verlag GmbH

Java - die Neuerungen in Version 9 bis 14: Modularisierung, Syntax- und API-Erweiterungen