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How to install ...?

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JDK

CentOS

wget https://download.oracle.com/java/17/latest/jdk-17_linux-x64_bin.tar.gz
mkdir /usr/local/java
tar -zxvf jdk-17_linux-x64_bin.tar.gz -C /usr/local/java
echo "export JAVA_HOME=/usr/local/java/jdk-17.0.2" >> /etc/profile
echo "export JRE_HOME=${JAVA_HOME}/jre" >> /etc/profile
echo "export CLASSPATH=.:${JAVA_HOME}/lib:${JRE_HOME}/lib" >> /etc/profile
echo "export PATH=${JAVA_HOME}/bin:$PATH" >> /etc/profile
ln -s /usr/local/java/jdk-17.0.2/bin/java /usr/bin/java

SDKMan

MacOS

curl -s "https://get.sdkman.io" | bash
source "$HOME/.sdkman/bin/sdkman-init.sh"
sdk version

Candidates Path: $HOME/.sdkman/candidates/ OR $SDKMAN_DIR/candidates/

Upgrade MacOS System JDK

MacOS

Install with official kit.
Show it: ls -lf /Library/Java/JavaVirtualMachines/(e.g., jdk1.8.0_20.jdk)
sudo ln -s /Library/Java/JavaVirtualMachines/jdk1.8.0_20.jdk/Contents /System/Library/Frameworks/JavaVM.framework/Versions/CurrentJDK

/usr/bin/java* -> /System/Library/Frameworks/JavaVM.framework/Versions/Current/Commands/java*

/System/Library/Frameworks/JavaVM.framework/Versions/Current -> A (which would be replaced)

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