linux装jdk

###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

#####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