1、操作系统环境
Last login: Fri Feb 21 18:47:52 2014 from 192.168.56.1 [root@datacenter ~]# uname -a Linux datacenter.localdomain 2.6.39-200.24.1.el6uek.x86_64 #1 SMP Sat Jun 23 02:39:07 EDT 2012 x86_64 x86_64 x86_64 GNU/Linux [root@datacenter ~]# more /etc/issue Oracle Linux Server release 6.3 Kernel \r on an \m [root@datacenter ~]#
2、上传JDK安装包
[root@datacenter ~]# ll total 67296 -rw-------. 1 root root 1548 Feb 17 17:02 anaconda-ks.cfg drwxr-xr-x 2 root root 4096 Feb 21 18:37 bea -rw-r--r--. 1 root root 30877 Feb 17 17:02 install.log -rw-r--r--. 1 root root 9389 Feb 17 17:00 install.log.syslog -rw-r--r-- 1 root root 68852176 Feb 20 22:30 jdk-6u38-ea-bin-b04-linux-amd64-31_oct_2012-rpm.bin
3、创建JDK安装目录
[root@datacenter ~]# mkdir -p /opt/jdk [root@datacenter ~]# mv jdk-6u38-ea-bin-b04-linux-amd64-31_oct_2012-rpm.bin /opt/jdk/
4、移除以前的JDK
[root@datacenter ~]# rpm -qa | grep jdk java-1.6.0-openjdk-1.6.0.0-1.45.1.11.1.el6.x86_64 [root@datacenter ~]# yum remove java-1.6.0-openjdk-1.6.0.0-1.45.1.11.1.el6.x86_64 Loaded plugins: security Setting up Remove Process Resolving Dependencies --> Running transaction check ---> Package java-1.6.0-openjdk.x86_64 1:1.6.0.0-1.45.1.11.1.el6 will be erased --> Finished Dependency Resolution Dependencies Resolved ============================================================================================================================================== Package Arch Version Repository Size ============================================================================================================================================== Removing: java-1.6.0-openjdk x86_64 1:1.6.0.0-1.45.1.11.1.el6 @anaconda-OracleLinuxServer-201206261930.x86_64/6.3 81 M Transaction Summary ============================================================================================================================================== Remove 1 Package(s) Installed size: 81 M Is this ok [y/N]: y Downloading Packages: Running rpm_check_debug Running Transaction Test Transaction Test Succeeded Running Transaction Erasing : 1:java-1.6.0-openjdk-1.6.0.0-1.45.1.11.1.el6.x86_64 1/1 Verifying : 1:java-1.6.0-openjdk-1.6.0.0-1.45.1.11.1.el6.x86_64 1/1 Removed: java-1.6.0-openjdk.x86_64 1:1.6.0.0-1.45.1.11.1.el6 Complete!
5、安装JDK
[root@datacenter ~]# cd /opt/jdk/ [root@datacenter jdk]# ll total 67240 -rw-r--r-- 1 root root 68852176 Feb 20 22:30 jdk-6u38-ea-bin-b04-linux-amd64-31_oct_2012-rpm.bin [root@datacenter jdk]# chmod +x jdk-6u38-ea-bin-b04-linux-amd64-31_oct_2012-rpm.bin [root@datacenter jdk]# ll total 67240 -rwxr-xr-x 1 root root 68852176 Feb 20 22:30 jdk-6u38-ea-bin-b04-linux-amd64-31_oct_2012-rpm.bin [root@datacenter jdk]# ./jdk-6u38-ea-bin-b04-linux-amd64-31_oct_2012-rpm.bin Unpacking... Checksumming... Extracting... UnZipSFX 5.50 of 17 February 2002, by Info-ZIP (Zip-Bugs@lists.wku.edu). inflating: jdk-6u38-ea-linux-amd64.rpm inflating: sun-javadb-common-10.6.2-1.1.i386.rpm inflating: sun-javadb-core-10.6.2-1.1.i386.rpm inflating: sun-javadb-client-10.6.2-1.1.i386.rpm inflating: sun-javadb-demo-10.6.2-1.1.i386.rpm inflating: sun-javadb-docs-10.6.2-1.1.i386.rpm inflating: sun-javadb-javadoc-10.6.2-1.1.i386.rpm Preparing... ########################################### [100%] 1:jdk ########################################### [100%] Unpacking JAR files... rt.jar... jsse.jar... charsets.jar... tools.jar... localedata.jar... plugin.jar... javaws.jar... deploy.jar... Installing JavaDB Preparing... ########################################### [100%] 1:sun-javadb-common ########################################### [ 17%] 2:sun-javadb-core ########################################### [ 33%] 3:sun-javadb-client ########################################### [ 50%] 4:sun-javadb-demo ########################################### [ 67%] 5:sun-javadb-docs ########################################### [ 83%] 6:sun-javadb-javadoc ########################################### [100%] Java(TM) SE Development Kit 6 successfully installed. Product Registration is FREE and includes many benefits: * Notification of new versions, patches, and updates * Special offers on Oracle products, services and training * Access to early releases and documentation Product and system data will be collected. If your configuration supports a browser, the JDK Product Registration form will be presented. If you do not register, none of this information will be saved. You may also register your JDK later by opening the register.html file (located in the JDK installation directory) in a browser. For more information on what data Registration collects and how it is managed and used, see: http://java.sun.com/javase/registration/JDKRegistrationPrivacy.html Press Enter to continue..... Done.
6、配置/etc/profile环境变量，(新增加红色字体部分).
[root@datacenter jdk]# vi /etc/profile # /etc/profile # System wide environment and startup programs, for login setup # Functions and aliases go in /etc/bashrc # It‘s NOT a good idea to change this file unless you know what you # are doing. It‘s much better to create a custom.sh shell script in # /etc/profile.d/ to make custom changes to your environment, as this # will prevent the need for merging in future updates. pathmunge () { case ":${PATH}:" in *:"$1":*) ;; *) if [ "$2" = "after" ] ; then PATH=$PATH:$1 else PATH=$1:$PATH fi esac } if [ -x /usr/bin/id ]; then if [ -z "$EUID" ]; then # ksh workaround EUID=`id -u` UID=`id -ru` fi USER="`id -un`" LOGNAME=$USER MAIL="/var/spool/mail/$USER" fi # Path manipulation if [ "$EUID" = "0" ]; then pathmunge /sbin pathmunge /usr/sbin pathmunge /usr/local/sbin else pathmunge /usr/local/sbin after pathmunge /usr/sbin after pathmunge /sbin after fi HOSTNAME=`/bin/hostname 2>/dev/null` HISTSIZE=1000 if [ "$HISTCONTROL" = "ignorespace" ] ; then export HISTCONTROL=ignoreboth else export HISTCONTROL=ignoredups fi export JAVA_HOME=/usr/java/jdk1.6.0_38/ export JAVA_BIN=/usr/java/jdk1.6.0_38/bin/ export PATH=$PATH:$JAVA_HOME/bin export CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar export JAVA_HOME JAVA_BIN CLASSPATH export PATH USER LOGNAME MAIL HOSTNAME HISTSIZE HISTCONTROL # By default, we want umask to get set. This sets it for login shell # Current threshold for system reserved uid/gids is 200 # You could check uidgid reservation validity in "/etc/profile" 85L, 2013C written [root@datacenter jdk]# java -version java version "1.6.0_38-ea" Java(TM) SE Runtime Environment (build 1.6.0_38-ea-b04) Java HotSpot(TM) 64-Bit Server VM (build 20.13-b02, mixed mode)
7、验证JDK安装
[root@datacenter jdk]# java Usage: java [-options] class [args...] (to execute a class) or java [-options] -jar jarfile [args...] (to execute a jar file) where options include: -d32 use a 32-bit data model if available -d64 use a 64-bit data model if available -server to select the "server" VM The default VM is server. -cp <class search path of directories and zip/jar files> -classpath <class search path of directories and zip/jar files> A : separated list of directories, JAR archives, and ZIP archives to search for class files. -D<name>=<value> set a system property -verbose[:class|gc|jni] enable verbose output -version print product version and exit -version:<value> require the specified version to run -showversion print product version and continue -jre-restrict-search | -jre-no-restrict-search include/exclude user private JREs in the version search -? -help print this help message -X print help on non-standard options -ea[:<packagename>...|:<classname>] -enableassertions[:<packagename>...|:<classname>] enable assertions -da[:<packagename>...|:<classname>] -disableassertions[:<packagename>...|:<classname>] disable assertions -esa | -enablesystemassertions enable system assertions -dsa | -disablesystemassertions disable system assertions -agentlib:<libname>[=<options>] load native agent library <libname>, e.g. -agentlib:hprof see also, -agentlib:jdwp=help and -agentlib:hprof=help -agentpath:<pathname>[=<options>] load native agent library by full pathname -javaagent:<jarpath>[=<options>] load Java programming language agent, see java.lang.instrument -splash:<imagepath> show splash screen with specified image
[root@datacenter jdk]# javac Usage: javac <options> <source files> where possible options include: -g Generate all debugging info -g:none Generate no debugging info -g:{lines,vars,source} Generate only some debugging info -nowarn Generate no warnings -verbose Output messages about what the compiler is doing -deprecation Output source locations where deprecated APIs are used -classpath <path> Specify where to find user class files and annotation processors -cp <path> Specify where to find user class files and annotation processors -sourcepath <path> Specify where to find input source files -bootclasspath <path> Override location of bootstrap class files -extdirs <dirs> Override location of installed extensions -endorseddirs <dirs> Override location of endorsed standards path -proc:{none,only} Control whether annotation processing and/or compilation is done. -processor <class1>[,<class2>,<class3>...]Names of the annotation processors to run; bypasses default discovery process -processorpath <path> Specify where to find annotation processors -d <directory> Specify where to place generated class files -s <directory> Specify where to place generated source files -implicit:{none,class} Specify whether or not to generate class files for implicitly referenced files -encoding <encoding> Specify character encoding used by source files -source <release> Provide source compatibility with specified release -target <release> Generate class files for specific VM version -version Version information -help Print a synopsis of standard options -Akey[=value] Options to pass to annotation processors -X Print a synopsis of nonstandard options -J<flag> Pass <flag> directly to the runtime system