Now, it is time to gather all the major Java 8 features under one reference post for your reading pleasure. Enjoy! Table Of Contents 1. Introduction 2. New Features in Java language 2.1. Lambdas and Functional Interfaces 2.2. Interface Default and St…
This only allows Java 7 language features, and you can hardly benefit from anything since a half of improvement also comes from the library. Features you could use are those which do not depend on the library: Diamond operator <> String switch Multi…
原文地址:http://www.infoq.com/articles/Java-8-Quiet-Features If you haven’t seen some of the videos or tutorials around Java 8, you’ve probably been super-busy or have a more interesting social life than I do (which isn’t saying much). With new features…
很多人出现了java.lang.RuntimeException: Unable to instantiate activity ComponentInfo{*****Activity}: java.lang.ClassNotFoundException: Didn't find class "*****Activity" on path: /data/app/*******.apk的错误,在android开发中,我也遇到了这个问题,纠结了两天,终于解决了,结合我自己加上网上的找到的,…
“Long is a class. long is a primitive. That means Long can be null, where long can't. Long can go anywhere that takes an Object, long can't (since it isn't a class it doesn't derive from Object). Java will usually translate a Long into a long automat…
情况1:try块中没有抛出异常try和finally块中都有return语句 public static int NoException(){ int i=10; try{ System.out.println("i in try block is"+i); return --i; }catch(Exception e){ --i; System.out.println("i in catch - form try block is"+i); return --i;…
可以将一个类的定义放在另一个类的定义内部,这就是内部类. 内部类是一个非常有用的特性但又比较难理解使用的特性(鄙人到现在都没有怎么使用过内部类,对内部类也只是略知一二). 第一次见面 内部类我们从外面看是非常容易理解的,无非就是在一个类的内部在定义一个类. public class OuterClass { private String name ; private int age; public String getName() { return name; } public void set…
