Java 8 refers to the newest version of the Java platform.

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Java Streams API Documentation

Currently learning Java so this may be a question resulting from lack of understanding of Java (while also learning Streams API) In the declarations of function I often see two templated types for ...
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3answers
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Does it make sense to split up an existing multi-method interface into several single method interfaces just to take advantage of lambdas?

Say I have an existing callback interface that has multiple methods. To illustrate my point I use a callback the likes that you would see in code that performs some HTTP client operations: public ...
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2answers
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How the Stream.filter() method works?

I know how the lambda expresion works and I know it is an argument for .filter() that establish the criteria to filter with. But I don't get how .filter() uses the argument, in this case a lambda ...
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2answers
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Is there any reason not to use Optional as a method argument in the case where you know the argument is something that may or may not be needed?

With Java 8, I've seen more and more articles about the use of Option/Optional. I understand what they trying to represent, and I see many examples of them being used as returns. However what I don't ...
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4answers
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Why were default and static methods added to interfaces in Java 8 when we already had abstract classes?

In Java 8, interfaces can contain implemented methods, static methods, and the so-called "default" methods (which the implementing classes do not need to override). In my (probably naive) view, there ...
5
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1answer
382 views

Passing a Scala function to a Java 8 method

The following Scala code works and can be passed to a Java method expecting a function. Is there a cleaner way to do this? Here's my first pass: val plusOne = new ...
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2answers
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Workaround for Java checked exceptions

I appreciate a lot the new Java 8 features about lambdas and default methods interfaces. Yet, I still get bored with checked exceptions. For instance, if I just want to list all the visible fields of ...
31
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3answers
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Why are the Java 8 java.time classes missing a getMillis() method?

Java 8 has a whole new library for dates and times in the package java.time which is very welcome thing to anyone who has had to use JodaTime before or hassle with making it's own date processing ...
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2answers
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Are Interfaces with Java 8 Virtual Extension Methods the Same Thing as Mixins?

This post describes a new feature in Java 8 called virtual extension methods (formerly called default methods, or defender methods). In the example provided, an interface has one method, which is ...
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1answer
238 views

Why would someone use @Native annotations?

link : http://download.java.net/jdk8/docs/api/java/lang/annotation/Native.html In Java 8, there will be @Native annotations. Indicates that a field defining a constant value may be referenced ...
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1answer
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Reasons for removal of function types in Java 8

I have been trying to understand why the JDK 8 Lambda Expert Group (EG) decided not to include a new function type into the Java programming language. Going over the mailing list I found a thread ...
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Type inference in Java 8

Is the introduction of the new lambda notation (see e.g. this article) in Java 8 going to require some kind of type inference? If so, how will the new type system impact the Java language as a whole? ...