openjdk source

模式，回到命令行，运行 source /etc/profile#再次运行java-version View information Display java-version# show Java version "1.8.0_25" Java (TM) SE Runtime Environment (build 1.8.0_25-b17) Java HotSpot (TM) 64-bit Server VM (build 25.25-b02, Mixed mode) #还没完, don't know why every time I open a new terminal and then go back and then configure the default javasudo/usr/s directly Bin/alternatives--config Java [sudo] password for QKL: There are a total of 2

First, download the source code, is through mercurial download the specific download command can see http://openjdk.java.net/projects/jdk7u/hereDownload by HG cloneI downloaded the version is openjdk-7u75-src-b13, this version may not be a stable version but as long as it can be compiled, the test can be used without error, of course, there are some code modifications, and business-relatedAnd then the envir

1.JDK 8 Example(1.1) Debian, Ubuntu, etc. use the following installation commands:sudo Install openjdk-8-jreThe PS:OPENJDK-8-JRE contains only the JRE, and if you need to develop a Java program, you need to download OPENJDK-8-JDK(1.2) Fedora, Oracle Linux, Red Hat Enterprise Linux, etc. use the following commands:su " Yum Install java-1.8.0-openjdk "The PS:JAVA-1

View the current system Jdk:rpm-qa | grep jdk The results obtained: The code is as follows Copy Code [Root@dc-01 java]# Rpm-qa | grep JDKjava-1.6.0-openjdk-1.6.0.0-1.45.1.11.1.el6.i686 Uninstall OPENJDK: The code is as follows Copy Code [Root@wx32 local]# Java-versionJava Version "1.6.0"OpenJDK

the JDKHere, take tar.gz as an example.[[email protected] installfile]# tar-zxvf jdk-8u171-linux-x64.tar.gz-c/java #把安装包解压到/java DirectoryFourth Step: Configure environment variables[Email protected] ~]# Vim/etc/profileExport java_home=/java/jdk1.8.0_171/#这里写自己的java安装目录, this is/java/jdk1.8.0_171/.Export path= $PATH: $JAVA _home/binExport Classpath=.:java_home/jre/lib/rt.jar: $JAVA _home/lib/dt.jar: $JAVA _home/lib/tools.jarFifth step: Environment variables take effect[Email protected] ~]#

The Linux Server oraclejdk and openjdk coexist and configure the JavaEE development environment, oraclejdkjavaee Due to my academic needs, I need to build a JavaEE development environment in linux and work with windows students for development. JDK Since fedora uses openjdk by default, some problems may occur when it is removed. Because many open-source software

Because the project is needed, install the Java environment on the machine.1, go to http://www.oracle.com/technetwork/java/javase/downloads/jdk7-downloads-1880260.html download, select the Accept License AgreementJdk-7u71-linux-x64.tar.gz with Linux x64 selected2, #接下来找个目录来放sun JDK, here we put the/usr/java, and figure out the version, such as Java8 in/usr/java/java8, Java7 in/usr/java/java7Create the/usr/java directory, then unzip the package and move to the/USR/JAVA/JAVA7#mkdir/usr/java tar-

Turn: What is instant compilation (JIT )!? OpenJDK HotSpot VM analysis, jitopenjdkKey Points Applications can select an appropriate instant compiler to optimize performance close to machines. Hierarchical compilation consists of five layers of compilation. Hierarchical compilation provides excellent Startup Performance and provides guidance on the compilation of the next compiler to provide high performance optimization. Provides the JVM switch f

Release date:Updated on: Affected Systems:OpenJDKDescription:--------------------------------------------------------------------------------Bugtraq id: 67508CVE (CAN) ID: CVE-2014-0462OpenJDK is a cooperation Platform for open source implementation of Java Platform, Standard Edition and related projects.On Debian GNU/Linux and Ubuntu 12.04 LTS and 10.04 LTS platforms, OpenJDK 6 6b31 and earlier versions ha

Fedora 20 comes with OpenJDK, So if you install the official JDK, you must first Delete OpenJDK as follows: 1: run the rpm-qa | grep jdk command to check the current jdk status. 2: yum-y remove java java-1.7.0-openjdk * uninstall openjdk, which may uninstall some additional software due to dependency. 3: Download th

installation is successfulIn the browser input http://localhost:8080 will see a cat, the table-type success Note: The remote word to shut down the firewall firewall-cmd--set-default-zone=trusted Remote Access http:/IP address 8080 Create a JSP file testecho "In the browser input http://localhost:8080/test.jsp will see the following time650) this.width=650; "src=" Https://s5.51cto.com/wyfs02/M02/9E/66/wKiom1mQR1nTaV-UAAAMbFOSTw0859.png "title=" 1w]q$ 0b1a9ft8bbw21qp7f2.png "alt

The OpenJDK 7 vulnerability has been fixed in Ubuntu 14.04 and Ubuntu 14.10. The OpenJDK 7 vulnerability has been resolved in Ubuntu 14.04 and Ubuntu 14.10. We recommend that you upgrade it as soon as possible. Canonical released the new OpenJDK 7 Security Bulletin, which has been submitted to the repository of Ubuntu 14.04 LTS and Ubuntu 14.10. This update f

1. Uninstall openjdkView the current system's JDK: rpm-Qa | grep JDK (I found here: java-1.6.0-openjdk-1.6.0.0-1.43.1.10.6.el6_2.i686), if not found, you can use rpm-Qa | grep gcj Remove the built-in JDK: Yum-y remove java-1.6.0-openjdk-1.6.0.0-1.43.1.10.6.el6_2.i686 ,: 2. Install Sun JDKSince I downloaded jdk-7-linux-i586.tar.gz, You can unzip it directly in the installation directory,Go to/USR and run th

/java/jdk1.6.0_38/bin"classpath=.:/ Usr/local/java/jdk1.6.0_38/libJava_home=/usr/local/java/jdk1.6.0_38Save exit.Configure profile:sudo vim/etc/profileAdd the following at the end of the file:Export java_home=/usr/local/java/jdk1.6.0_38Export JRE_HOME=/USR/LOCAL/JAVA/JDK1.6.0_38/JREExport path= $PATH:/usr/local/java/jdk1.6.0_38/binExport Classpath=./:/usr/local/java/jdk1.6.0_38/lib:/usr/local/java/jdk1.6.0_38/jre/libOnce configured, apply:sudo source/

Release date:Updated on: Affected Systems:OpenJDK 6Description:--------------------------------------------------------------------------------Bugtraq id: 45894Cve id: CVE-2010-4351 OpenJDK is a cooperation Platform for open source implementation of Java Platform, Standard Edition and related projects. OpenJDK's IcedTea plug-in has a security vulnerability. Remote attackers can exploit this vulnerability

View the current system JDK: rpm-Qa | grep JDK Result: [Root @ dc-01 Java] # rpm-Qa | grep JDK Java-1.6.0-openjdk-1.6.0.0-1.45.1.11.1.el6.i686 Detach: [Root @ dc-01 Java] # Yum-y remove java-1.6.0-openjdk-1.6.0.0-1.45.1.11.1.el6.i686 Wait for a while to complete. Download Sun's JDK. I downloaded Jdk-6u37-linux-i586-rpm.bin For a 64-bit system, download: Jdk-6u37-linux-x64-rpm.bin

(1)/etc/profileExport java_home=/usr/java/jdk1.7.0_67-cloudera/Export path= $PATH: $JAVA _home/binExport jre_home= "$JAVA _home/jre"Export classpath=.: $JAVA _home/lib/tools.jar: $JAVA _home/lib/rt.jarAfter the change is complete, use the source/etc/profile command to update;(2) The following steps are more important. Because OPENJDK is preinstalled on many Linux systems, the default is not what we want to

This is an installation record. I have browsed many articles on solr installation and configuration before and when I encountered problems. Thanks to all the authors for sharing them. It was found that Solr 4.3.0 was installed on Ubuntu 12.04 + OpenJDK 1.7, which is somewhat different from the existing articles on the Internet. Install Ubuntu 12.04-after basic installation, only install openssh Install OpenjdkBkjia @ ubsolr :~ $ Sudo apt-get-y install

1. Uninstall the previous JDK and mark all options that contain openjdk in the new version to completely delete it. Or execute sudo apt-Get autoremove openjdk-6-jre 2, download JDK Software Follow these steps to install Sun JDK: Slave/ Or add a repository next week: Sudo add-Apt-repository PPA: ferramrobert to/JavaSudo apt-Get updateSudo apt-Get install sun-java6-jdk sun-java6-plugin Then, unzip and instal

The previous time in order to study the JVM, so went down the OpenJDK6 compiled a, because less sound card driver, and did not find how to solve, the results are always compiled unsuccessful, then give up. But recently debugging JDK source code, found a lot of debugging information is not, see my that hard ah. Just a friend successfully compiled OpenJDK7, I went to a trial, although under the success of CentOS, but I do not use the Mac, so I spent a l