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2025-09-23 Update From: SLTechnology News&Howtos shulou NAV: SLTechnology News&Howtos > Development >
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I believe many inexperienced people don't know what to do about the new features and improvements of Java 8. Therefore, this article summarizes the causes and solutions of the problem. Through this article, I hope you can solve this problem.
This article is a comprehensive summary of the upcoming improvements in Java 8 for developers, which will be released in September 2013.
At the time of this writing, the development of Java 8 is still in an orderly and intense progress, the language is new and API is still likely to change, and I will try my best to keep this document and get changes to Java 8.
A preview of Java 8, also known as "Project Lambda", is now available for download from java.net.
I used a preview version of IntelliJ to do my IDE. In my opinion, it is the best IDE that supports java 8 features so far, which you can download here.
Since I can't find the official document of Java 8 released by Oracle, currently there is only a local version of the Java 8 document, and when the Oracle document is released, I will re-link to the official document.
Interface improvement
Static methods can now be defined in the interface. A common example is that in the java class library, for some interfaces such as Foo, there is a utility class Foos with static methods to generate or use with Foo object instances. Since static methods can exist in an interface, in most cases Foos utility classes can use public methods in the interface to proxy (or set Foos to package-private).
More importantly, interfaces in Java 8 can define default methods. For example, a method of a for-each loop can be added to the java.lang.Iterable:
Public default void forEach (Consumer
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