JDK

JDK

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容器Ubuntu安装JDK

1、访问官网
https://www.oracle.com/cn/java/technologies/downloads/
选择：
x64 Compressed Archive 188.09 MB
https://download.oracle.com/java/21/latest/jdk-21_linux-x64_bin.tar.gz (sha256)

2、拷贝至容器内的文件夹
cd /usr/local
mkdir java
mv /home/software/jdk-21_linux-x64_bin.tar.gz ./

3、解压
tar -zxvf ./jdk-21_linux-x64_bin.tar.gz -C ./

4、配置JDK环境变量
vim /etc/profile
#增加内容：
JAVA_HOME=/usr/local/java/jdk-21.0.1
CLASSPATH=$JAVA_HOME/lib/
PATH=$PATH:$JAVA_HOME/bin
export PATH JAVA_HOME CLASSPATH
#重新启动：
source /etc/profile

5、检查是否成功
java -version
#结果：
java version "21.0.1" 2023-10-17 LTS
Java(TM) SE Runtime Environment (build 21.0.1+12-LTS-29)
Java HotSpot(TM) 64-Bit Server VM (build 21.0.1+12-LTS-29, mixed mode, sharing)

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