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README:This file should be located at the top of the OpenJDK Mercurial rootrepository. A full OpenJDK repository set (forest) should also includethe following 6 nested repositories:"jdk", "hotspot", "langtools", "corba", "jaxws" and "jaxp".The root repository can be obtained with something like:hg clone http://hg.openjdk.java.net/jdk8/jdk8 openjdk8You can run the get_source.sh script located in the root repository to getthe other needed repositories:cd openjdk8 && sh ./get_source.shPeople unfamiliar with Mercurial should read the first few chapters ofthe Mercurial book: http://hgbook.red-bean.com/read/See http://openjdk.java.net/ for more information about OpenJDK.Simple Build Instructions:0. Get the necessary system software/packages installed on your system, seehttp://hg.openjdk.java.net/jdk8/jdk8/raw-file/tip/README-builds.html1. If you don't have a jdk7u7 or newer jdk, download and install it fromhttp://java.sun.com/javase/downloads/index.jspAdd the /bin directory of this installation to your PATH environmentvariable.2. Configure the build:bash ./configure3. Build the OpenJDK:make allThe resulting JDK image should be found in build/*/images/j2sdk-imagewhere make is GNU make 3.81 or newer, /usr/bin/make on Linux usuallyis 3.81 or newer. Note that on Solaris, GNU make is called "gmake".Complete details are available in the file:http://hg.openjdk.java.net/jdk8/jdk8/raw-file/tip/README-builds.html
：Code submit frequency
：React/respond to issue & PR etc.
：Well-balanced team members and collaboration
：Recent popularity of project
：Star counts, download counts etc.