下载 Temurin17（国内高速镜像，解决 github 下载慢 / 打不开）

bash

cd /usr/local # 清华镜像下载JDK17 x64 curl -O https://mirrors.tuna.tsinghua.edu.cn/Adoptium/17/jdk/x64/linux/OpenJDK17U-jdk_x64_linux_hotspot_17.0.20_8.tar.gz

2.2 解压重命名

bash

tar -zxvf OpenJDK17U-jdk_x64_linux_hotspot_17.0.20_8.tar.gz mv jdk-17.* jdk17

2.3 写入环境变量

bash

tee /etc/profile.d/jdk17.sh <<'EOF' export JAVA_HOME=/usr/local/jdk17 export PATH=$JAVA_HOME/bin:$PATH export CLASSPATH=.:$JAVA_HOME/lib EOF source /etc/profile

2.4 验证

bash

java -version echo $JAVA_HOME