Learning Java 8

Introduction

• Java 8: Is it for me?
• Are you ready for Java 8?
• Explore the code challenge environment

1. Date and Time

• LocalDate, LocalTime, and LocalDateTime
• ZonedDateTime and ZoneId
• Clock
• Comparing dates and times
• DateTimeFormatter
• Period
• Duration
• Altering dates and times
• Converting Date and Calendar
• Solution: Filtering by date

2. Base64 Encoding and Decoding

• What is Base64?
• Encoding and decoding using java.util.Base64
• Solution: Encode with Base64

3. Interfaces in Java 8

• Static methods
• Default methods
• Functional interfaces
• Built-in functional interfaces
• Solution: Implement a static method

4. Lambda Expressions

• Basic Lambda expressions
• Lambda expressions with parameters
• Lambda expressions body
• Lambdas as method parameters
• Lambda expressions and variable scope
• Solution: Write a lambda expression

5. Stream API

• What are streams and the stream pipeline?
• Creating streams
• Terminal operations on streams
• Intermediate operations on streams
• Parallel streams
• Solution: Replace loops with the Stream API

6. Optional Class in Java

• Why do you need the Optional class?
• Creating and using Optionals
• Methods on the Optional class
• Challenge
• Solution

7. Other Java 8 Features

• String in switch statements
• Array parallel sorting
• Unsigned integer arithmetic
• Improved concurrent API
• Removal of the permanent generation in memory
• Challenge
• Solution

8. Later than Java 8 Features

• What is not yet in Java 8?

Conclusion

• Where to go next in Java