Java Lambda Expressions
Lambda expression is a new and important feature of Java which was included in Java SE 8. It provides a clear and concise way to represent one method interface using…
Java 8 Lambda expressions
A very new and exciting feature, Java 8 ship with it, is java lambda expressions. They are not unknown to many of us who have worked on advanced languages like scala.…
Java 8 Lambda Expression in a nutshell
Before Lambda expressions support was added by JDK 8, I’d only used examples of them in languages like C# and C++. Once this feature was added to Java, I started…
Java各版本新特性
前言 更新的太快了，都学不过来了，最近了解一些Java8以后的一些特性，写下来希望对大家有帮助。 为什么选择Java11 容器环境支持，GC等领域的增强。进行了瘦身，更轻量级，安装包体积小。JDK11 是一个长期支持版。 这里大家可以关注一下我的个人专栏《Java 进阶集中营》，每天会给大家即时分享一个最新的java技术资讯，有优秀的java技术内容，也欢迎分享在我的专栏。JAVA 进阶集中营zhuanlan.zhihu.com 特性介绍 由于直接从Java8跨越到Java11，所以特性介绍就把Java9-Java11的部分特性一起介绍一下。 Jshell @since 9 Jshell在Java9中就被提出来了，可以直接在终端写Java程序，回车就可以执行。Jshell默认会导入下面的一些包,所以在Jshell环境中这些包的内容都是可以使用的。 import java.lang.*; import java.io.*; import java.math.*; import java.net.*; import java.nio.file.*; import java.util.*; import java.util.concurrent.*; import java.util.function.*;…
How to make a USB boot disk for Ubuntu under Mac
Make sure your USB drive has at least 4G space Get Ubuntu ISO image file Application-> Other-> Disk Utility Select the USB drive and erase it. Don't choose the wrong…
Mac下如何制作Ubuntu系统的USB启动盘
确保你的U盘至少有4G空间获取Ubuntu ISO映像文件应用->其它->磁盘工具选择U盘，然后擦除。千万别选错了Mac的硬盘啊！！！选在格式: MS-DOS (FAT)点击“擦除” 下载、安装、打开 Etcher选择Ubuntu镜像文件选择U盘点击“Flash”刻录大功告成 Etcher下载链接:https://pan.baidu.com/s/17rR1T81phBnveb9ffxedrA 密码:oc5n
Java 8 Stream – anyMatch() example
We define two Predicate object ：p1 and p2 represents different conditions. import java.util.ArrayList; import java.util.List; import java.util.function.Predicate; public class StreamAnyMatchExample { public static void main(String[] args) { Predicate<Student> p1 =…
Using Lambda with Map and List
Map Example import java.util.HashMap; import java.util.Map; public class LambdaWithMap { public static void main(String[] args) { Map<String, Integer> map = new HashMap(); map.put("beijing", 2000); map.put("shanghai", 2200); map.put("guangzhou", 1500); map.forEach((key, value)…
Java Lambda Expressions Tutorial with examples
Lambda expression is a new feature which is introduced in Java 8. A lambda expression is an anonymous function. A function that doesn’t have a name and doesn’t belong to…
How to serialize HashMap in java
HashMap class is serialized by default which means we need not to implement Serializable interface in order to make it eligible for Serialization. In this tutorial we will learn How to…