Simple Java is a collection of frequently asked Java questions. You can download the PDF version here for free. If you like digrams and simple exmples in this book, you may also like Simple Java 8.

Foreword

1. Strings and Arrays

2. Common Methods

3. Classes and Interfaces

4.1 Collections

4.2 Generics

5. Exceptions

6. Concurrency

7. I/O & Database

8. Compiler and JVM

9. Top collections

10. Popular Libraries, Frameworks and Tools

11. Java 8

12. Others