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Converting procedural code to Object Oriented in Java

Effective Java

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Head First Java 2e

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How I Became a Programmer

Java Concurrency in Practice

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Java in a Nutshell

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Java In Action: An Excellent Guide to Explore JDBC And Database Applications

Java In Practice: JDBC And Database Applications

Java Multithreading Interview Questions And Answers (Tech interviewer’s notes)

Java Programming Simplified – C++: Fundamentals of Java: An Objесt-Оrіеntеd language The Complete Guide C plus plus

Java: The Complete Reference, Eleventh Edition

Learn JDBC By Example: A Quick Start Guide to MariaDB and SQL Server Driven Programming

Modern Java in Action: Lambdas, streams, functional and reactive programming

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Optimizing Java: Practical Techniques for Improving JVM Application Performance

Readable & Maintainable Code in Java