dnaplotter installation issues

Question

[K.Gee]

Hello everyone, Im struggling to install/run artemis dnaplot. I download the program from the website. I followed the instructions so I used these commands tar zxf artemis-unix-release-{version}.tar.gz and artemis/dnaplotter. I also tried to update and udgrade my linux system but still I got the following error after typing artemis/dnaplotter.

Starting DNA Plotter with arguments: -mx2g -ms100m -noverify -Djdbc.drivers=org.postgresql.Driver -Dartemis.environment=UNIX  
Error: A JNI error has occurred, please check your installation and try again
Exception in thread "main" java.lang.UnsupportedClassVersionError: uk/ac/sanger/artemis/circular/DNADraw has been compiled by a more recent version of the Java Runtime (class file version 53.0), this version of the Java Runtime only recognizes class file versions up to 52.0

at java.lang.ClassLoader.defineClass1(Native Method)
    at java.lang.ClassLoader.defineClass(ClassLoader.java:757)
    at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:142)
    at java.net.URLClassLoader.defineClass(URLClassLoader.java:468)
    at java.net.URLClassLoader.access$100(URLClassLoader.java:74)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:369)
    at java.net.URLClassLoader$1.run(URLClassLoader.java:363)
    at java.security.AccessController.doPrivileged(Native Method)
    at java.net.URLClassLoader.findClass(URLClassLoader.java:362)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:419)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:352)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:352)
    at sun.launcher.LauncherHelper.checkAndLoadMain(LauncherHelper.java:495)

I run these in my system:

• openjdk version "1.8.0_242"
• OpenJDK Runtime Environment (build 1.8.0_242-8u242-b08-0ubuntu3~18.04-b08)
• OpenJDK 64-Bit Server VM (build 25.242-b08, mixed mode)
• javac 10.0.2

Can please anyone can help me with this issue? I dont know much about java so I cant handly by myself. Thanks in advance.

[ATpoint]

Exception in thread "main" java.lang.UnsupportedClassVersionError: uk/ac/sanger/artemis/circular/DNADraw has been compiled by a more recent version of the Java Runtime (class file version 53.0), this version of the Java Runtime only recognizes class file versions up to 52.0

Upgrade your Java.

[K.Gee]

so this is my java version : javac 10.0.2?

[ATpoint]

Type java --version

[K.Gee]

I dont know what happened by my reply disappeared. So iam rewriting my reply. I typed java --version and I got this:

• openjdk version "1.8.0_242"
  
  • OpenJDK Runtime Environment (build 1.8.0_242-8u242-b08-0ubuntu3~18.04-b08)
  • OpenJDK 64-Bit Server VM (build 25.242-b08, mixed mode)

But nowhere mentioned about version 52/53 and java 9/11 as @genomax pointed me out.

[GenoMax]

You need to upgrade your Java. See java version history here.

[K.Gee]

Now i get it . thanks a lot!!!

[GenoMax]

From the program page you linked:

The old v17.0.1 version of the Artemis software required Java version 1.8 to run. All recent releases from v18.0.0 onwards require a minimum of Java 9 and ideally Java 11. This must be installed first.