如何在AWS AMI EC2实例上安装JDK 17？请提供对应的安装命令

Hey there! Installing JDK 17 on an AWS EC2 AMI instance is totally straightforward—let's break it down step by step, since the process varies a bit depending on which Amazon Linux version your AMI is running (most folks use either Amazon Linux 2 or Amazon Linux 2023).

Installing JDK 17 on Amazon Linux 2 #

• First, update your system's package index to make sure you're pulling the latest versions:

  sudo yum update -y
  

• Next, install Amazon Corretto 17—this is AWS's official, open-source JDK optimized for EC2, so it's our top recommendation:

  sudo yum install -y amazon-corretto-17
  

  If you prefer using OpenJDK instead, you can run this command instead:

  sudo yum install -y java-17-openjdk-devel
  

• Verify the installation worked by checking the Java version:

  java -version
  javac -version
  

  You should see output showing version 17.x.x.
• (Optional) Set the JAVA_HOME environment variable so your system and applications can find the JDK easily:
  1. Open your bash profile with a text editor (like nano):

     nano ~/.bash_profile
     

  2. Add this line at the end (adjust the path if your JDK is installed elsewhere—you can locate it with find /usr/lib/jvm -name "java-17*"):

     export JAVA_HOME=/usr/lib/jvm/java-17-amazon-corretto.x86_64
     

  3. Save and exit (for nano: Ctrl+O, Enter, then Ctrl+X), then reload the profile to apply changes:

     source ~/.bash_profile
     

  4. Confirm it's set correctly:

     echo $JAVA_HOME
     

Installing JDK 17 on Amazon Linux 2023 #

Amazon Linux 2023 uses dnf instead of yum for package management, so the steps are slightly different:

• Start by updating your system packages:

  sudo dnf update -y
  

• Install Amazon Corretto 17 (again, the recommended option):

  sudo dnf install -y amazon-corretto-17
  

  For OpenJDK, use this command instead:

  sudo dnf install -y java-17-openjdk-devel
  

• Verify the installation:

  java -version
  javac -version
  

• (Optional) Set JAVA_HOME just like we did for Amazon Linux 2:
  1. Open your bash profile:

     nano ~/.bash_profile
     

  2. Add the export line (check the path with find /usr/lib/jvm -name "java-17*" if needed):

     export JAVA_HOME=/usr/lib/jvm/java-17-amazon-corretto.x86_64
     

  3. Save, exit, and reload the profile:

     source ~/.bash_profile
     

  4. Confirm the variable is set:

     echo $JAVA_HOME
     

That's all! You should have JDK 17 up and running on your EC2 instance in no time.

内容的提问来源于stack exchange，提问作者oOXAam