Linux配置Java环境
一.安装JAVA
1.下载X64压缩包
jdk-8u202-linux-x64.tar.gz
2.访问https://www.oracle.com/java/technologies/javase/javase8-archive-downloads.html#jdk-8u121-oth-JPR
进行下载
将jdk-8u202-linux-x64.tar.gz放在公网服务器上,通过wget下载到本地,或者直接将压缩包拖到本地
wget 映射的公网IP/jdk-8u202-linux-x64.tar.gz
3.解压缩文件并移动至/opt
1.tar -xzvf jdk-8u271-linux-x64.tar.gz
2.mv jdk1.8.0_202 /opt
3.cd /opt/jdk1.8.0_202
4.设置环境变量
执行 vim ~/.bashrc , 按”i”并添加下列内容
或vim ~/.zshrc
1. # install JAVA JDK
2. export JAVA_HOME=/opt/jdk1.8.0_202
3. export CLAsspATH=.:${JAVA_HOME}/lib
4. export PATH=${JAVA_HOME}/bin:$PATH
保存退出 按ESC后再shift+: 输入wq
source ~/.zshrc
5.安装并注册
执行:
1. update-alternatives --install /usr/bin/java java /opt/jdk1.8.0_202/bin/java 1
2. update-alternatives --install /usr/bin/javac javac /opt/jdk1.8.0_202/bin/javac 1
3. update-alternatives --set java /opt/jdk1.8.0_202/bin/java
4. update-alternatives --set javac /opt/jdk1.8.0_202/bin/javac
查看是否安装成功:
1. update-alternatives --config java
2. update-alternatives --config javac