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Installing OpenJDK

  1. Download and decompress the installation package to a directory (for example, /opt/tools/installed/).
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    wget https://github.com/AdoptOpenJDK/openjdk8-binaries/releases/download/jdk8u252-b09/OpenJDK8U-jdk_aarch64_linux_hotspot_8u252b09.tar.gz
tar -zxf OpenJDK8U-jdk_aarch64_linux_hotspot_8u252b09.tar.gz
mkdir -p /opt/tools/installed/
mv jdk8u252-b09 /opt/tools/installed/
  2. Configure Java environment variables.
    1. Open the /etc/profile file. 
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      vi /etc/profile
    2. Press i to enter the insert mode and add the following content to the end of the file: 
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      export JAVA_HOME=/opt/tools/installed/jdk8u252-b09
export PATH=$JAVA_HOME/bin:$PATH
    3. Press Esc, type :wq!, and press Enter to save the file and exit.
  3. Make the environment variables take effect.
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    source /etc/profile
  4. Check whether OpenJDK is successfully installed.
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    java -version

    The installation is successful if information similar to the following is displayed: