Installing Jdk 7 on Centos
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download jdk on console
cd /opt sudo wget --no-cookies --no-check-certificate --header "Cookie: gpw_e24=http%3A%2F%2Fwww.oracle.com%2F; oraclelicense=accept-securebackup-cookie" \ "http://download.oracle.com/otn-pub/java/jdk/7u75-b13/jdk-7u75-linux-x64.tar.gz"
then unpack
tar zxvf jdk-7u75-linux-x64.tar.gz
then create folder
mkdir /usr/java
then move
mv jdk1.7.0_75/ /usr/java/
install java
alternatives --install /usr/bin/java java /usr/java/jdk1.7.0_75/bin/java 1
install javac
alternatives --install /usr/bin/javac javac /usr/java/jdk1.7.0_75/bin/javac 1
install jar
alternatives --install /usr/bin/jar jar /usr/java/jdk1.7.0_75/bin/jar 1
install javaws
alternatives --install /usr/bin/javaws javaws /usr/java/jdk1.7.0_75/bin/javaws 1
test the installation
[root@host-50-244-171-31 opt]# java -version java version "1.7.0_75" Java(TM) SE Runtime Environment (build 1.7.0_75-b13) Java HotSpot(TM) 64-Bit Server VM (build 24.75-b04, mixed mode) [root@host-50-244-171-31 opt]# javac -version javac 1.7.0_75
then set java home
sh -c "echo export JAVA_HOME=/usr/java/jdk1.7.0_75 >> /etc/environment"
issue the command
source /etc/environment
test
[root@host-50-244-171-31 opt]# echo $JAVA_HOME /usr/java/jdk1.7.0_75
this package is needed for javaws
yum -y install libX11-devel.x86_64
test javaws
[root@host-50-244-171-31 opt]# javaws -version Java(TM) Web Start 10.75.2.13-fcs