Centos-6.3-x86_64minimal mini edition installation notes-Java

1, yum install jdk16yumlistjava-160-openjdk * yuminstalljava-160-openjdkx86_64-y download jdkwgethttp: downloadoraclecomotn-pubjavajdk7u13-b20jdk-7u13-1, yum install jdk1.6 # yum list java-1.6.0-openjdk. * # yum install java-1.6.0-openjdk.x86_64-y download jdk # wget http://download.oracle.com/otn-pub/java/jdk/7u13-b20/jdk-7u13-linux-x64.tar.gz # Sudo tar-vzxf jdk-7u13-linux-x64.gz-C/usr/lib/jvm/2, modify the version, select the best JDK # alternatives -- config java3 and set JAVA_HOME ***************************** * *********************************** differences between the three configuration methods ** **************************************** * ******************* 1) currently Logged In valid export JAVA_HOME =/usr/lib/jvm/jre-1.6.0-openjdk.x86_64 export PATH = $ JAVA_HOME/bin: $ PATH export CLASSPATH =.: $ JAVA_HOME/lib/dt. jar: $ JAVA_HOME/lib/ Tools. jar 2) is valid for a user (not tested) and edited in the user directory. bashrc file, add: set JAVA_HOME =/usr/lib/jvm/jre-1.6.0-openjdk.x86_64 export JAVA_HOME set PATH = $ JAVA_HOME/bin: $ PATH export PATH set CLASSPATH =.: $ JAVA_HOME/lib/dt. jar: $ JAVA_HOME/lib/tools. jar export CLASSPATH 3) is valid for all users (most popular) open/etc/profile in a text editor and add: # vi/etc/profile ********************************** * ************************ JAVA_HOME =/usr/lib/jvm/jd K1.7.0 _ 13 PATH = $ JAVA_HOME/bin: $ path classpath =.: $ JAVA_HOME/lib/dt. jar: $ JAVA_HOME/lib/tools. jar export JAVA_HOME export PATH export CLASSPATH must be logged on again to be valid. 4. test whether the test is effective: echo $ JAVA_HOME $ echo $ PATH $ echo $ CLASSPATH $