2020-10-12

Linux学习4

Ubuntu20配置JDK

下载JDK

cd ~
mkdir java
cd java
#下载JDK
wget --no-check-certificate --no-cookies --header "Cookie: oraclelicense=accept-securebackup-cookie" https://download.oracle.com/otn-pub/java/jdk/15+36/779bf45e88a44cbd9ea6621d33e33db1/jdk-15_linux-x64_bin.tar.gz

#解压
tar -zvxf jdk-15_linux-x64_bin.tar.gz

配置环境变量

vi /etc/profile
# 在文件尾追加以下内容
export JAVA_HOME=/home/long/java/jdk-15
export JRE_HOME=/home/long/java/jdk-15/jre 
export CLASSPATH=.:$JAVA_HOME/lib:$JRE_HOME/lib:$CLASSPATH
export PATH=$JAVA_HOME/bin:$JRE_HOME/bin:$PATH

#使配置生效
source /etc/profile

#验证配置是否成功
java -version