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title = "Java"
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lastmod = "2017-07-18T20:01:16+03:00"
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# Java
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This article covers obtaining open source Java as well as Oracle Java.
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## Installation
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If you are looking for OpenJDK or OpenJRE, install `openjdk-8` from the repository. The instructions below are for Oracle Java.
You can set up Java by following the instructions below:
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## JRE
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Grab the Java Runtime Environment (JRE) as `.tar.gz` from the [Oracle Download Page ](http://www.oracle.com/technetwork/java/javase/downloads/jre8-downloads-2133155.html ).
Extract JRE and move it to /opt:
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``` bash
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cd ~/Downloads
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tar xf jre-8u131-linux-x64.tar.gz
sudo mv jre1.8.0_131 /opt/
sudo ln -svf /opt/jre1.8.0_131/bin/java /usr/bin/java
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```
To enable Java in Firefox:
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``` bash
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mkdir -p ~/.mozilla/plugins
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ln -s /opt/jre1.8.0_131/lib/amd64/libnpjp2.so ~/.mozilla/plugins/libnpjp2.so
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```
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## JDK
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Grab the Java Development Kit (JDK) as `.tar.gz` from the [Oracle Download Page ](http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html ).
Extract JDK and move it to /opt:
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``` bash
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cd ~/Downloads
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tar xf jdk-8u131-linux-x64.tar.gz
sudo mv jdk1.8.0_131 /opt/
sudo ln -svf /opt/jdk1.8.0_131/bin/java /usr/bin/java
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```
To enable Java in Firefox:
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``` bash
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mkdir -p ~/.mozilla/plugins
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ln -s /opt/jdk1.8.0_131/jre/lib/amd64/libnpjp2.so ~/.mozilla/plugins/libnpjp2.so
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```