Thread: java -jar path problem

win7
cygwin 1.7.25

I've done something dumb but I can't figure out what it is, sigh. I installed ANTLR into my /usr/local/lib (C:\cygwin\usr\local\lib), fixed the CLASSPATH variable so that ANTLR is first and put /usr/local/lib into my (cygwin) PATH variable. Java is installed into C:\Program Files\Java.

Using a bash shell (in cygwin)
java works
java -jar /usr/local/lib/antlr.. does not work (Unable to access jarfile /usr/local/lib/antlr-4.1-complete.jar)
cd /usr/local/lib
java -jar antlr .. works just fine

Under a DOS shell
java works
java -jar c:\cywin\usr\local\lib\antlr ... does not work

What have I done wrong? What am I missing?

Hello.
I tried in Ubuntu.
It worked well.
Can you try again?

Syed.

Hello.
Sure. Please find attached the screenshot. I wanted to attached the executable jar as well but looks like I can't do that.
If you get any questions please let me know.
The executable jar "Exec.jar" was available in the JarTest2 folder.
I switched to some other directory. From there I executed the jar file.

Thanks,
Syed.Screenshot.jpg

It's an environmental issue. Java is installed on a Win7 machine and expects a Win7 formatted path. I dislike Win-anything and run using a (cygwin) bash shell. Bash shell paths 'know' that the root is '/'. Java does not know that '/' means 'C:/'. And so, the mystery ends.

Thank you all. You got me to think of a 'novel' way to (again) prove that I used to be smart, and then changed my mind.

art

~ >> java -jar /usr/local/lib/antlr-4.1-complete.jar
Error: Unable to access jarfile /usr/local/lib/antlr-4.1-complete.jar
~ >> java -jar 'C:\cygwin64\usr\local\lib\antlr-4.1-complete.jar' # or
~ >> java -jar c:/cygwin64/usr/local/lib/antlr-4.1-complete.jar

ANTLR Parser Generator Version 4.1
-o ___ specify output directory where all output is generated
-lib ___ specify location of grammars, tokens files
-atn generate rule augmented transition network diagrams
-encoding ___ specify grammar file encoding; e.g., euc-jp
-message-format ___ specify output style for messages in antlr, gnu, vs2005
-long-messages show exception details when available for errors and warnings
-listener generate parse tree listener (default)
-no-listener don't generate parse tree listener
-visitor generate parse tree visitor
-no-visitor don't generate parse tree visitor (default)
-package ___ specify a package/namespace for the generated code
-depend generate file dependencies
-D<option>=value set/override a grammar-level option
-Werror treat warnings as errors
-XdbgST launch StringTemplate visualizer on generated code
-XdbgSTWait wait for STViz to close before continuing
-Xforce-atn use the ATN simulator for all predictions
-Xlog dump lots of logging info to antlr-timestamp.log

I hear you. The root I was talking about was the UNIX root, '/', established in cygwin. I put this root on the C: drive. Most specifically, C:/cygwin64 in DOS is '/' in cygwin. It appears that java does not understand that '/' really means C:/cygwin64. When I put my path in as "java -jar c:/cygwin64/usr/local/lib/antlr...jar" it works. Nothing else does.

When you put in '/Testing/BuildDoit' I don't know what happen. I guess you are running under Win7 and that (you are saying) that Testing/BuildDoit is located on one of the drives, C:, D:, or E:, and that Win7 translates '/' to the appropriate drive and path? I don't know how you did it but it doesn't seem to work for me. So, how did you construct your system so that java recognizes the root, '/', and translates the root into the correct path? Where is Testing/BuildDoit located? Is the directory Testing located at C:/Testing or is Testing located at some other place (D:/.../Testing for example)?

art

Well, I aint an expert (as this post clearly shows) but that would be my guess. If you locate Testing/ at any other location (D:/Testing, E:/Testing, or C:/.../Testing) I would guess that it won't work.