###在oracle官网(oracle.com)找jdk的下载路径
##安装多线程下载
# yum install axel
# mkdir -p /Java/jdk && cd /Java/jdk
##### java
JAVA_HOME=/Java/jdk
export JAVA_HOME
PATH=$JAVA_HOME/bin:$JAVA_HOME/include:$JAVA_HOME/include/linux:$PATH
export PATH
CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export CLASSPATH
#####保存退出
#####刷新执行
#source /etc/profile
测试
##安装多线程下载
# yum install axel
# mkdir -p /Java/jdk && cd /Java/jdk
#####oracle的链接是动态的,只能每次找链接,下面是例子
# axel -n 500 http://download.oracle.com/otn-pub/java/jdk/8u71-b15/jdk-8u71-linux-x64.tar.gz?AuthParam=1453306052_277bd0345cf7521bd775185ffb4286e3
# tar zxvf jdk-8u71-linux-x64.tar.gz
# mv jdk1.8.0_71 /Java/jdk
# vi /etc/profile
####在文件里加下面
##### java
JAVA_HOME=/Java/jdk
export JAVA_HOME
PATH=$JAVA_HOME/bin:$JAVA_HOME/include:$JAVA_HOME/include/linux:$PATH
export PATH
CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar
export CLASSPATH
#####保存退出
#####刷新执行
#source /etc/profile
测试
java -version