Java 8 Cheat Sheet and Best Practices | JRebel by Perforce
In this post we’ll look at the hot topics of the Java 8 language: default methods, lambdas and streams, and using Optional to represent absent values. In addition, we'll talk about the Java 8 best practices that we've found so far. If you're just here for our Java 8 cheat sheet, you can click the button at the bottom of the page to download a printable PDF version. Back to topBest Practices in Jav
Tired of Null Pointer Exceptions? Consider Using Java SE 8's Optional!
String version = "UNKNOWN"; if(computer != null){ Soundcard soundcard = computer.getSoundcard(); if(soundcard != null){ USB usb = soundcard.getUSB(); if(usb != null){ version = usb.getVersion(); } } } Listing 1 However, you can see that the code in Listing 1 quickly becomes very ugly due to the nested checks. Unfortunately, we need a lot of boilerplate code to make sure we don't get a NullPointerE
OTN Japan マニュアル
Compatibility is a complex issue. This document discusses three types of potential incompatibilities relating to a release of the Java platform: Source: Source compatibility concerns translating Java source code into class files including whether or not code still compiles at all. Binary: Binary compatibility is defined in The Java Language Specification as: 'A change to a type is binary compatibl
The Java® Language Specification
List of Examples 3.10.5-1. String Literals 4.2.2-1. Integer Operations 4.2.4-1. Floating-point Operations 4.3.1-1. Object Creation 4.3.1-2. Primitive and Reference Identity 4.4-1. Members of a Type Variable 4.5.1-1. Unbounded Wildcards 4.5.1-2. Bounded Wildcards 4.8-1. Raw Types 4.8-2. Raw Types and Inheritance 4.11-1. Usage of a Type 4.12.3-1. Different Kinds of Variables 4.12.4-1. Final Variable
The Java® Virtual Machine Specification
Java SE > Java SE Specifications > Java Virtual Machine Specification The Java® Virtual Machine Specification Next The Java® Virtual Machine Specification Java SE 8 Edition Tim Lindholm Frank Yellin Gilad Bracha Alex Buckley 2015-02-13 Legal Notice Table of Contents Preface to the Java SE 8 Edition 1. Introduction 1.1. A Bit of History 1.2. The Java Virtual Machine 1.3. Organization of the Specifi
Java 8対応の「Eclipse 4.4 Luna」がリリース。日本語化プラグインPleadesと日本語版ディストリビューションも公開
毎年6月にEclipse本体や関連プラグインなどがまとまって一斉にバージョンアップを宣言するEclipseのRelease Trainが今年も行われ、Eclipse 4.4、コード名Lunaがリリースされました。 Eclipse 4.4 Lunaの最大の目玉は3月に登場したJava 8への対応です。 ラムダ式や新しい日時APIなどのJava 8の新機能に対して、Eclipseのコードフォーマット、クイックアシスト、リファクタリング機能、コンパイラなど包括的に対応しています。そのほかの新機能は、OSGi R6サポート、Workbench UIでダークテーマの追加などの改善、PHP開発ツールパッケージのアップデートなど。 Eclipseの日本語化プラグインおよび日本語版ディストリビューションのPleadesも、すでにEclipse 4.4 Luna対応リリースを行っています。 Pleadesは
Java 8 Tutorial - winterbe
“Java is still not dead—and people are starting to figure that out.” Welcome to my introduction to Java 8. This tutorial guides you step by step through all new language features. Backed by short and simple code samples you’ll learn how to use default interface methods, lambda expressions, method references and repeatable annotations. At the end of the article you’ll be familiar with the most rece
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