Debian에서 java 설치

1.下载jdk

http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html

2.通过winSCPU等 SSH传输软件将下载的jdk文件传到Edison上

3在Edison上解压jdk文件并解压到 /usr/local

cd /usr/local
tar -zxvf jdk-8u73-linux-i586.tar.gz

4.解压后将jdk 1.8.0_55 的文件夹重命名为jdk

mv jdk1.8.0_55 jdk

5. 设置环境变量

nano /etc/profile

</pre><p></p><p>6. 在文件后面插入以下设置</p><p><span style="color:#333333;"></span></p><pre name="code" class="html">exportJAVA_HOME=/usr/local/jdk/
exportJRE_HOME=/usr/local/jdk/jre
exportLASSPATH=.:$CLASSPATH:$JAVA_HOME/lib:$JRE_HOME/lib
exportPATH=$PATH:$JAVA_HOME/bin:$JRE_HOME/bin

7.将jdk设为 默认jdk时 输入一下命令（root 权限）

update-alternatives --install /usr/bin/java java /usr/local/jdk/bin/java 300
update-alternatives --install /usr/bin/jar jar /usr/local/jdk/bin/jar 300 
update-alternatives--install /usr/bin/javah javah /usr/local/jdk/bin/javah 300
update-alternatives --install /usr/bin/javap javap /usr/local/jdk/bin/javap 300
update-alternatives --config java

8. jdk 输入以下命令确认是否设置正确

java-version

9. 如出现以下类似信息则说明配置正确

   java version "1.8.0_55"

   Java(TM) SE Runtime Environment (build 1.8.0_55-b13)

   Java HotSpot(TM) Client VM (build 24.55-b03,mixed mode)