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文章首发于公众号《程序员果果》地址 : https://mp.weixin.qq.com/s/h1L4FmzVSix434gVt8Fc7w 一、简介 JEP330-启动单文件代码程序(Launch Single-File Source-Code Programs)，是JDK11中一个很不错的功能。...

使用JDK自带的VisualVM进行Java程序的性能分析

VisualVM是什么？ VisualVM是JDK自带的一个用于Java程序性能分析的工具，JDK安装完毕后就有啦，在JDK安装目录的bin文件夹下能找到名称为jvisualvm.exe。要使用VisualVM分析您的应用性能，首先得让VisualVM识别出您的应用。Eclipse有个插件名叫“V...

Ubuntu下JDK7安装全过程并调试第一个带包的java程序

第一步：下载jdk-7-linux-i586.tar.gz 第二步：解压安装 cd /usr/libsudo mkdir jvm cd {你的目录jdk压缩文件目录} sudo tar zxvf jdk-7-linux-i586.tar.gz -C /usr/lib/jvm ...

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