EC2 or Greengrass deploy error - java version

- Error Message
reason Installed Java version must be greater than or equal to 8

- Solution

sudo yum install -y java-1.8.0-openjdk-devel.x86_64

sudo /usr/sbin/alternatives --config java

There are 2 programs which provide 'java'.

  Selection    Command
-----------------------------------------------
*+ 1           /usr/lib/jvm/jre-1.7.0-openjdk.x86_64/bin/java
   2           /usr/lib/jvm/jre-1.8.0-openjdk.x86_64/bin/java

Enter to keep the current selection[+], or type selection number: 2

sudo yum remove java-1.7.0-openjdk
java -version