Our Windows, Linux, and Mac installers use Install4j, multi-platform installer builder 

I believe the BiglyBT_Installer.sh installer needs the Install4j installer installed before it can install.  Enough installs?  Thus disregard my comment above about setting jINSTALL4J_JAVA_HOME to JAVA_HOME.  It needs to point to Install4j, which you will have to 1st install.

java -version

If this returns the version then your java itself is running.

It sounds as though you may also need to have INSTALL4J_JAVA_HOME set, as an environment variable.  Taking a guess, this may need to be set to JAVA_HOME, which is the directory where java is installed (the java directory that contains bin).  As an example, if the java executable resides in /usr/bin/java/bin, then you would need env variable:

export INSTALL4J_JAVA_HOME=/usr/bin/java

I set my java env variables in /etc/bash.bashrc, but thats up to you.

openjdk version "11.0.4-ea" 2019-07-16
OpenJDK Runtime Environment (build 11.0.4-ea+9-post-Debian-1)
OpenJDK 64-Bit Server VM (build 11.0.4-ea+9-post-Debian-1, mixed mode, sharing)

I'm clueless about anything "Java", it's required to run the "BiglyBT" program on I2p.
Your error is very close to mine...which I don't know how to satisfy & continue with install.

My output:

$ sudo bash BiglyBT_Installer.sh

don't need JNA
not wayland
No suitable Java Virtual Machine could be found on your system.
The version of the JVM must be at least 1.8 and at most 1.12.
Please define INSTALL4J_JAVA_HOME to point to a suitable JVM.

define INSTALL4J_JAVA_HOME ..???
{I noticed that "INSTALL4J" packaging thing, on their download page.}

To get java version I used -v and got this output:

$ java -v
Unrecognized option: -v
Error: Could not create the Java Virtual Machine.
Error: A fatal exception has occurred. Program will exit.

I got something else to do? To 'create' or 'run' this JVM ??

Would ya pass the info to do that...so I can get it going and move on!? (learn something to!)

Thanks...

I already installed v.11 of OpenJDK. The backported (to stretch) one.

https://debian.pkgs.org/10/debian-main- … 4.deb.html

James
Indiana, USA

Any ideas? 
TIA!