Upgrade from Java SE 7 OCP to Java SE 8 OCP

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Upgrade from Java SE 7 OCP to Java SE 8 OCP
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Topics

Lambda Expressions

Describe Java inner classes and develop the code that uses Java inner classes (such as: nested class, static class, local class and anonymous classes)
Define and write functional interfaces
Describe a Lambda expression; refactor the code that use anonymous inner class to use Lambda expression; including type inference,target typing

Using Built in Lambda Types

Describe the built in interfaces included in Java 8 – java.uilt.function package
Develop code that uses Function interface
Develop code that uses Consumer interface
Develop code that uses Supplier interface
Develop code that uses UnaryOperator interface
Develop code that uses Predicate interface
Develop the code that use primitive and binary variations of base interfaces of java.util.function package
Develop the code that use method reference; including refactor the code that use Lambda expression to use method references

Filtering Collections with Lambdas

Develop the code that iterates a collection by using forEach; including method chaining
Describe the Stream interface and pipelines
Filter a collection using lambda expressions
Identify lambda operations that are lazy

Collection Operations with Lambda

Develop the code to extract data from an object using map
Search for data using search methods including: findFirst, findAny, anyMatch, allMatch, noneMatch.
Describe the unique characteristics of the Optional classes
Perform calculations using methods: count, max, min, average, sum
Sort a collection using lambda expressions
Save results to a collection by using the collect method and Collector class; including methods such as averagingDouble,groupingBy,joining,partitioningBy

Parallel Streams

Develop the code that use parallel streams
Implement decomposition, reduction, in streams

Lambda Cookbook

Develop the code that use Java SE 8 collection improvements: Colleciton.removeIf, List.replaceAll, Map.computeIfAbsent/Present, Map.forEach
Read files using lambda improvements: Files.find, lines(), walk()
Use merge, flatMap methods on a collection
Describe other stream sources: Arrays.stream(), IntStream.range()

Method Enhancements

Adding static methods to interfaces
Define and use a default method of a interface; Describe the inheritance rules for a default method

Use Java SE 8 Date/Time API - 10%

Create and manage date-based and time-based events; including combination of date and time into a single object using LocalDate, LocalTime, LocalDateTime, Instant, Period, Duration
Work with dates and times across time-zones and manage changes resulting from daylight savings
Define and create timestamps, periods and durations; apply formatting to local and zoned dates and times

JavaScript on Java with Nashorn

Develop Javascript code that creates and uses Java members such as Java objects, methods, JavaBeans, Arrays, Collections, Interfaces.
Develop code that Evaluates JavaScript in java, Passes Java object to Javascript, inovkes Javascript function and call methods on javascript objects.
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Roel De Nijs

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