This course is a systematic approach to explaining in both notes format and especially code examples, lambda expressions and streams in Java.  

Topics include:

• Lambdas:

  • Functional Interfaces

  • Lambdas and their relationship to Functional Interfaces

  • Lambdas in code using a custom Functional Interface

  • Lambdas in code using the pre-defined API Functional Interfaces:

    • Predicate/BiPredicate

    • Supplier

    • Consumer/BiConsumer

    • Function/BiFunction

    • UnaryOperator and BinaryOperator

  • final and "effectively final"

  • Method References:

    • bound

    • unbound

    • static

    • constructor

    • context and it's effect in understanding method references

• Streams:

  • Pipelines

  • Laziness

  • Creating streams

  • Terminal operations:

    • reduce()

    • collect()

      • Collectors.toMap()

      • Collectors.groupingBy()

      • Collectors.partitioningBy()

  • Intermediate operations:

    • filter(), distinct(), limit()

    • map(), flatMap(), sorted()

  • Primitive streams:

    • Creating

    • API

    • Functional Interfaces

    • Mapping between primitive streams

    • Mapping between primitive streams and Object streams and vice versa

  • Optionals

  • Parallel streams