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For DSpace 4.x or 5.x, you should be using Java 7. See

• If you are using a recent version of Ubuntu (e.g. 16.04LTS or later), OpenJDK 7 is harder and harder to find. However, there are still some PPAs that have unmaintained copies (i.e. no security patches). This is good enough for installing on something like vagrant-dspace just do perform the release. Here's a PPA that has worked (as of July 2017):

  Code Block

  # Install the add-apt-repository command (if not available) sudo apt install software-properties-common # Add in PPA that has old versions of OpenJDK sudo add-apt-repository ppa:openjdk-r/ppa sudo apt-get update # Install OpenJDK 7 sudo apt-get install openjdk-7-jdk # Switch which Java alternative is in use (and select OpenJDK 7) update-alternatives --config java # Check that the settings are now correct java -version

  
  

For DSpace 6, you can use either Java 7 or Java 8 for the release.

Use Maven 3 or above

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