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Java 9: Building Robust Modular Applications
book

Java 9: Building Robust Modular Applications

by Dr. Edward Lavieri, Peter Verhas, Jason Lee
April 2018
Intermediate to advanced content levelIntermediate to advanced
910 pages
33h 21m
English
Packt Publishing
Content preview from Java 9: Building Robust Modular Applications

Unboxed argument lists for method handles

The way in which unboxed argument lists are currently handled can lead to processing inefficiencies. This is especially true when we use Object[] or List<object> as variable-length argument lists. Java uses java.lang.invoke to transform the method calls using boxing. In Java, autoboxing is when the compiler automatically converts primitive types and their corresponding object wrapper classes. Here is the list of wrapper classes along with the corresponding primitive type:

Wrapper class Primitive type
Boolean boolean
Byte byte
Character char
Double double
Float float
Integer int
Long long
Short short

 

As you can see from the following illustration autoboxing occurs when we go ...

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Publisher Resources

ISBN: 9781788832823Supplemental ContentOtherPurchase LinkErrata Page