Installing the JDK on Ubuntu, and then most of the same tutorial configuration on the Web, the results run java,javac,java-version always appear strange and strange problems. After the configuration is complete, the following appears after running Java-versionThe program ' Java ' Can is found in the following packages:* DEFAULT-JRE* Gcj-4.8-jre-headless* Openjdk-7-jre-headless* Gcj-4.6-jre-headless* Openjdk
the Linux system, ~ Represents the user's home folder, the "/home/User name" directory, such as your user name is Hadoop, then ~ represents "/home/hadoop/". In addition, the text after # in the command is a comment, just enter the preceding command. At this point ssh localhost , the command, no need to enter the password can be directly logged in.Installing the Java EnvironmentThe Java environment can choose either Oracle's JDK or OpenJDK, and the n
JDK InstallationFirst, use the Yum list |grep JDK command to detect if the system has its own installed RPM package.[email protected] ~]# Yum List | grep JDKFile:///mnt/cdrom/repodata/repomd.xml: [Errno] Could not open/read file:///mnt/cdrom/repodata/repomd.xmlTrying other mirror.java-1.6.0-openjdk.i686 1:1.6.0.0-1.45.1.11.1.el6 C6-mediajava-1.6.0-openjdk-demo.i686 1:1.6.0.0-1.45.1.11.1.el6 C6-mediajava-1.6.0-open
CentOS7 use the yum command to install Java SDK
CentOS 6.X and 7.X come with OpenJDK runtime environment (openjdk ). It is an open-source Java platform on linux.
Installation Method:
1. Enter the following command to view the list of available JDK software packages;
Yum search java | grep-I -- color JDK
2. install java sdk in CentOS linuxOn the command line terminal, run the following command as the root us
the other is es1.portal.com. Esrixa.portal.com is used to configure relational databases and es1.portal.com is used to configure space-time big data storage.3.11.3.1 DataStore configuration under esrixa.portal.com
3.11.3.2 DataStore configuration under es1.portal.com
3.12 Install Web Adaptor
WebAdaptor requires a Web container for configuration. in Linux, you can select Tomcat for deployment. To install Tomcat, you must first install JDK, while the CentOS7 operating system comes with
Step 1: Check whether the built-in JDK of Linux has installed and installed CentOS with OpenJdk. run java-version to view the following information: javaversion quot; 1.6.0 quot; openJDKRuntimeEnvironment (build1.6.0-b09) OpenJDK64-BitServerVM (build1.
Step 1: Check whether the built-in JDK of Linux is installed
The installed CentOS comes with OpenJdk and uses the java-version command. the following infor
property Jiang, enter the command vim/etc/hostnameHere vim is the enhanced mode of VI, the same as editing files, installation can refer to here http://jingyan.baidu.com/article/046a7b3efd165bf9c27fa915.html.Then go to the hosts and configure the IP mapping.Arrow this line directly plus on the line, the front is your Ubuntu IP behind is the name you just wrote in the hostname file.7. To get ready to work here, it takes more than jdk1.7 to run hbase, and I have been having problems with the inst
1. first go to the terminal (sudoapt-getinstallaptitude) sudoaptitudebuild-depopenjdk-63. Note: Ubuntu system language is required
1. first go to the http://download.java.net/openjdk/jdk7/ to download the OpenJDK7 source code zip package
2. Install the compilation Toolkit
If notAptitude, first installAptitude(Sudo apt-get install aptitude)
Sudo aptitude build-dep openjdk-6
3.
Note:: Ubuntu SystemLangu
Step 1: Check whether the built-in JDK of Linux is installed (uninstall centOS 1.4 installed). after CentOS is installed, it comes with OpenJdk. run the java-version command. the following information is displayed: javaversion quot; 1.6.0 quot; OpenJDKRuntimeEnvironment (build1.6.0-b09) OpenJDK64-BitS
Step 1: Check whether the built-in JDK of Linux is installed (uninstall centOS 1.4 installed)
The installed CentOS comes with
$JAVA _home , the output is empty, and the main cause of the problem is that there is no installation of OPENJDK-7-JDK, which can be $sudo apt-get install OPENJDK-7-JDK to resolve, however, after being tested, the installation OpenJDK starts Android Studio, it will appear, when using the boot tool to create a new project, the bottom line, there is next finish Pr
Common sense: Compiling the Android source code needs to be done in the Linux system environment ...In Linux, the development of the Android environment includes the following requirements: Git, repo, JDK (now commonly used openjdk), and so on, where git downloads the source code Repo is a Python script written by the Android project team to unify the management of Android projects to make git easier to use.Open the terminal and execute the following
Linux deploys multiple Tomcat1. Environment:1.1. Centos 6.51.2.Tomcat 8.0Prepare files: JDK because the JDK file is relatively large, this is compressed separately, three files downloaded after the extract to a file can be. Hey, I've been spending a lot of points.: http://download.csdn.net/detail/yelang_110/8551037 Decomposition Package OneHTTP://DOWNLOAD.CSDN.NET/DETAIL/YELANG_110/8551043 Decomposition Package IIHTTP://DOWNLOAD.CSDN.NET/DETAIL/YELANG_110/8551053 Decomposition Package IIItomcat:
In the Java language, object objects have a special method: Hashcode (), Hashcode () represents the value of an int type assigned by the JVM virtual machine to this object. The JVM uses the object's Hashcode value to improve the efficiency of the HASHMAP, Hashtable hash table Access objects. With respect to the hashcode () return value of Object objects, it is a simple description on the Web: "The JVM is generated from a certain strategy", so what exactly is this strategy? I have a problem, enco
One. Check if OPENJDK is installedOpen the terminal and enter/copy/paste the following command: java-version If you have OPENJDK installed on your system, the command may be returned as follows:Java Version "1.7.0_15"OpenJDK Runtime Environment (IcedTea6 1.10pre) (7B15~PRE1-0LUCID1)OpenJDK 64-bit Server VM (build 19.0-
The process of compiling OPENJDK under Windows 7 is introduced.
First, obtain the JDK source code
In http://download.java.net/openjdk/jdk7/download the latest OpenJDK7 source Openjdk-7-fcs-src-b147-27_jun_2011.zip, unzip it to the E: Disk directory.
Since the OPENJDK's JAXP and JAXWS directories do not contain JAXP and Jax-ws source code (they can be downloaded
After Rhel and CentOS Linux use the yum command, install OPENSDK to the/usr/lib/jvm/directory:
[Root@dabu.info ~]# ls-l/usr/lib/jvm/
The output is as follows:
Total 4
drwxr-xr-x 3 root root 4096 Feb 17:00 java-1.7.0-openjdk-1.7.0.51.x86_64
lrwxrwxrwx. 1 root 2 1 Feb 17:00 JRE->/etc/alternatives/jre
lrwxrwxrwx. 1 root Feb 17:00 jre-1.7.0-> atives/jre_1.7.0
lrwxrwxrwx 1 root Feb 17:00 jre-1.7.0-openjdk.x86_64-> Java-1.7.0-
Recently engaged in the installation of Cloudera Manager, experienced a lot of frustrations, summed up:
Also referred to a number of other people's posts such as:
http://blog.csdn.net/a921122/article/details/51939692
Http://www.aboutyun.com/forum.php?mod=viewthreadtid=9086extra=page%3D1
http://www.aboutyun.com/forum.php?mod=viewthreadtid=10852highlight=%C0%EB%CF%DF%B0%B2%D7%B0Cloudera% 2BManager
The approximate method is feasible. System Environment4 virtual machines, including Master node 4 cor
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