升级到 Java SE 11 开发者考试大纲

考点准备

由招文桃在2019年11月14日发布

升级到 Java SE 11 开发者考试大纲

Understanding Modules

  • Describe the Modular JDK
  • Declare modules and enable access between modules
  • Describe how a modular project is compiled and run

Migration to a Modular Application

  • Migrate the application developed using a Java version prior to SE 9 to SE 11 including top-down and bottom-up migration, splitting a Java SE 8 application into modules for migration
  • Use jdeps to determine dependencies and identify way to address the cyclic dependencies

Services in a Modular Application

  • Describe the components of Services including directives
  • Design a service type, load the services using ServiceLoader, check for dependencies of the services including consumer module and provider module

Local-Variable Type Inference

  • Use local-variable type inference
  • Create and use lambda expressions with local-variable type inferred parameters

Java Interfaces

  • Create and use methods in interfaces
  • Define and write functional interfaces

Lambda Expressions

  • Create and use lambda expressions
  • Use lambda expressions and method references
  • Use built-in functional interfaces including Predicate, Consumer, Function, and Supplier
  • Use primitive and binary variations of base interfaces of java.util.function package

Lambda Operations on Streams

  • Extract stream data using map, peek and flatMap methods
  • Search stream data using search findFirst, findAny, anyMatch, allMatch and noneMatch methods
  • Use the Optional class
  • Perform calculations using count, max, min, average and sum stream operations
  • Sort a collection using lambda expressions
  • Use Collectors with streams, including the groupingBy and partitioningBy operation

Parallel Streams

  • Develop the code that use parallel streams
  • Implement decomposition and reduction with streams

Java File I/O (NIO.2)

  • Use Path interface to operate on file and directory paths
  • Use Files class to check, delete, copy or move a file or directory
  • Use Stream API with Files

Language Enhancements

  • Use try-with-resources construct
  • Develop code that handles multiple Exception types in a single catch block