因工作需要,CentOS7.2下安裝jdk1.7,之前系統自帶了jdk1.8,所以需要先卸載1.8,再裝1.7
java -version
rpm -qa | grep java
rpm -e --nodeps java-1.8.0-openjdk-1.8.0.101-3.b13.el7_2.x86_64
或
yum -y remove java java-1.8.0-openjdk-1.8.0.101-3.b13.el7_2.x86_64
可以下載.tar.gz或者rpm
如果下載的rpm
rpm -ivh jdk-7u79-linux-x64.rpm
如果下載的是tar,可以解壓到想要放的目錄,一般為/usr/local/java
/etc/profile文件最後添加
export JAVA_HOME=/usr/java/jdk1.7.0_79
export CLASSPATH=.:$JAVA_HOME/jre/lib/rt.jar:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export PATH=$PATH:$JAVA_HOME/bin
source /etc/profile
java -version
Ubuntu 14.04安裝JDK1.8.0_25與配置環境變量 http://www.linuxidc.com/Linux/2015-01/112030.htm
CentOS 搭建JDK環境 http://www.linuxidc.com/Linux/2015-06/118879.htm
Ubuntu 14.04安裝JDK1.8.0_25與配置環境變量 http://www.linuxidc.com/Linux/2015-01/112030.htm
Ubuntu 14.04 LTS安裝Oracle JDK 1.8 http://www.linuxidc.com/Linux/2014-11/109216.htm
CentOS6.3安裝JDK和環境配置 http://www.linuxidc.com/Linux/2012-09/70780.htm
Ubuntu 14.04 安裝 JDK8 http://www.linuxidc.com/Linux/2014-09/106218.htm
Ubuntu下安裝JDK圖文解析 http://www.linuxidc.com/Linux/2014-09/107291.htm