"Error: Unable to access jarfile *.jar" - what's the remedy?

Question

the error was in response to command: C:\Users\User1>java -Ddw.graphhopper.datareader.file=berlin-latest.osm.pbf -jar *.jar server config-example.yml

seemed to be correctly executed.

I have windows 10 machine with 'Eclipse Adoptium jdk-17.0.5.8-hotspot' installed.

It seems to me as an environment problem but I'm not a programmer, so it's a wild guess :)

Actually I'm following the instructions given in github in relation to GraphHopper: https://github.com/graphhopper/graphhopper#get-started text

I was hoping to see a log message with 'Server - Started' :(

I'm not sure what exactly jave trying to access. google doesn't bring anything useful mentioning '*.jar'

The option `-jar` takes *one* file as its target,so *.jar is invalid — g00se, Nov 04 '22 at 09:08
Thanx g00se. Given the information I provided, what is in your opinion the proper command syntax in order to perform the intended function? It's quite puzzling since I believe that the original programmer that put together the entire procedure knows JAVA — AlonTAU, Nov 04 '22 at 10:38
`java -Ddw.graphhopper.datareader.file=berlin-latest.osm.pbf -jar graphhopper-web-6.0.jar server config-example.yml` — g00se, Nov 04 '22 at 10:42

score 0 · Accepted Answer · answered Nov 04 '22 at 17:23

0

Well, with the kind and fast help of 'g00se', the answer is: The wildcard *.jar cannot be used with '-jar'. a single definite file name is required.

In the specific context of my question instead of: "-jar *.jar" the syntax should be: "-jar graphhopper-web-6.0.jar".

The Server is actually started now :)

Hope the GraphHopper people will correct their instructions on github for the sack of java-nonliterate people like myself :):)

answered Nov 04 '22 at 17:23

AlonTAU

The command line on github is not intended for a windows command line. E.g. the wget command before the java command won't work in `powershell` or `cmd` too. – Karussell Mar 03 '23 at 17:10

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