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This article is about how raspberry pie 4b+Ubuntu20.10 Server installs Java8 64. The editor thinks it is very practical, so share it with you as a reference and follow the editor to have a look.

Installation environment:

Raspberry pie 4b + Ubuntu 20.10 (GNU/Linux 5.8.0-1015-raspi aarch74)

First check the version of your system.

Uname-M1. Download jdk

Https://www.oracle.com/java/technologies/javase/javase-jdk8-downloads.html

two。 Decompress tar-zxvf jdk-8u281-linux-aarch74.tar.gz3. Cut the extracted folder to the usr/local/jdk1.8 directory

Create a directory

Cd / usr/local sudo mkdir jdk1.8

Cut to the / usr/local/jdk1.8/ directory you created

Sudo mv jdk1.8.0_281 / usr/local/jdk1.8/4. Configure the environment variable sudo vim / etc/profile

Append at the end

# jdkexport JAVA_HOME=/usr/local/jdk1.8/jdk1.8.0_281export PATH=$JAVA_HOME/bin:$PATHexport CLASSPATH=.:$JAVA_HOME/lib/dt.jar:$JAVA_HOME/lib/tools.jar5. Overload the environment variable source / etc/profile6. Check java-version

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