Oracle Java包安装失败，Ubuntu 16.04添加PPA报错求助

Hey there, I’ve dealt with this exact problem before—let’s break down what’s happening and how to fix it quickly.

The error you’re seeing happens because the webupd8team/java PPA was officially deprecated a while back, and the associated Launchpad account/team has been removed. That means this PPA is no longer accessible, so we need to use alternative methods to get a working JDK on your Ubuntu 16.04 system.

Option 1: Install OpenJDK (Recommended) #

OpenJDK is the open-source, officially supported alternative to Oracle JDK in Ubuntu’s repositories. It’s stable, maintained, and doesn’t require any third-party PPAs. Here’s how to set it up:

• First, update your package list to ensure you have the latest repository info:

  sudo apt update
  

• Install OpenJDK 8 (the most stable, widely supported version for Ubuntu 16.04):

  sudo apt install openjdk-8-jdk
  

• Verify the installation was successful by running these commands:

  java -version
  javac -version
  

  You should see output showing the OpenJDK version details.
• If you have multiple JDK versions installed and need to switch the default one, run:

  sudo update-alternatives --config java
  

  Then select the number corresponding to the OpenJDK 8 entry.

Option 2: Manually Install Oracle JDK (If You Need the Oracle Version) #

If you specifically require Oracle JDK (for compatibility with certain tools, for example), you’ll have to install it manually since the PPA is gone:

1. Download the Oracle JDK 8 tarball from Oracle’s official site (note: newer Oracle JDK versions may require you to create/use an Oracle account to download).
2. Create a directory to store the JDK files (if it doesn’t exist):

   sudo mkdir -p /usr/lib/jvm/
   

3. Extract the downloaded tarball into this directory (replace jdk-8uXXX-linux-x64.tar.gz with your actual filename):

   sudo tar -xvf jdk-8uXXX-linux-x64.tar.gz -C /usr/lib/jvm/
   

4. Set up environment variables to make the JDK available system-wide. Edit your user’s bash profile with:

   nano ~/.bashrc
   

   Add these lines at the end (replace jdk1.8.0_XXX with the actual folder name from the extracted tarball):

   export JAVA_HOME=/usr/lib/jvm/jdk1.8.0_XXX
   export PATH=$PATH:$JAVA_HOME/bin
   

5. Save and exit the editor (press Ctrl+O, then Enter, then Ctrl+X), then apply the changes:

   source ~/.bashrc
   

6. Verify the installation with:

   java -version
   javac -version
   

   You should see Oracle JDK’s version info if everything worked.

Clean Up the Invalid PPA (If You Tried Adding It) #

If you already attempted to add the broken PPA, it’s a good idea to remove it to avoid future update errors:

• List all your PPAs to find the broken one:

  ls /etc/apt/sources.list.d/
  

• Delete the file associated with webupd8team/java (it will look like webupd8team-ubuntu-java*.list):

  sudo rm /etc/apt/sources.list.d/webupd8team-ubuntu-java*.list
  

• Update your package list again to clear any invalid entries:

  sudo apt update
  

内容的提问来源于stack exchange，提问作者Sparsh Dutta