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      • 安装java17 

      curl -O https://download.oracle.com/java/17/latest/jdk-17_linux-x64_bin.tar.gz
tar -zxvf jdk-17_linux-x64_bin.tar.gz
mv jdk-17.0.3.1 java
rm -f jdk-17_linux-x64_bin.tar.gz
vim /etc/profile

export JAVA_HOME=/usr/local/java
export JRE_HOME=${JAVA_HOME}/jre
export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib
export PATH=${JAVA_HOME}/bin:$PATH

source /etc/profile
java -version