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From: Paul <nospam@needed.invalid>
Newsgroups: alt.os.linux.mint
Subject: Re: Java problem with Angry IP scanner
Date: Wed, 8 Feb 2023 22:58:46 -0500
Organization: A noiseless patient Spider
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On 2/8/2023 11:40 AM, Rob H wrote:
> I have been using Angry IP scanner for a number of years with any problems.
> Very recently I upgraded my Linux Mint to 21.1, and now when I try to run the said program et a popup message saying I need to have Java/OpenJDK11+ to run the program.
> 
> My Java version:
> rob@rob-Z97:~$ java -version
> openjdk version "1.8.0_352"
> OpenJDK Runtime Environment (build 1.8.0_352-8u352-ga-1~22.04-b08)
> OpenJDK 64-Bit Server VM (build 25.352-b08, mixed mode)
> 
> If I have OpenJDK Build 25, surely the said program should run, butb it doesn't

https://angryip.org/download/#linux

    Running

    Make sure you have at least Java 11 or OpenJDK installed - check your distribution.

    Last version with Java 8 support was 3.7.6 <=== AngryIP version

*******

Usually, stuff like this is protected with wrappers.

#!/bin/sh
java=$JAVA_HOME/bin/java
[ ! -e $java ] && java=java
$java --add-opens java.base/java.net=ALL-UNNAMED -jar /usr/lib*/ipscan/ipscan*.jar "$@"
[ $? != 0 ] && notify-send "You need Java/OpenJDK 11+ to run ipscan"

There are probably several situations where that error message comes back.

For example, let us say that $JAVA_HOME does not point to the correct install point.
That might break the thing. It could be, you do have a correct Java
installed, but nothing corrected the $JAVA_HOME.

It's not using your PATH variable to sniff for the thing.
It is cheating.

And the script above, is about the only barrier to success in there :-)
It's got "Guilty yer Honour" written all over it.

    Paul