How can I fix a JAVAC Invalid flag error?

I'm trying to compile a shell script with javac and it keeps returning me this error:

$ bash run_RGE.sh

javac: invalid flag: Element.java
Usage: javac <options> <source files>
use -help for a list of possible options
javac: invalid flag: RGE.java
Usage: javac <options> <source files>
use -help for a list of possible options
javac: invalid flag: -Xms1024m
Usage: javac <options> <source files>
use -help for a list of possible options
sleep: missing operand
Try "sleep --help" for more information.

My shell script looks like this :

#!/bin/bash
# -*- coding: utf-8 -*-
export LIB=C:/home/b04280/Transfert/Libs/
CLASSPATH=$(echo "$LIB"/*.jar | tr ' ' ':')
export ficIn=C:/home/b04280/Transfert/rgeII.xlsx/
export repIn=C:/home/b04280/Transfert/rgeII/
export repOut=C:/home/b04280/Transfert/rgeIIcible/
javac -cp $CLASSPATH Element.java
javac -cp $CLASSPATH RGE.java
javac -Xms1024m -Xmx1024m -cp $CLASSPATH  RGE $ficIn $repIn $repOut > docx.txt
sleep

I am wondering where this error comes from, I looked at other questions on here regarding the same topic but their solutions didn't seem fit to my particular case.

Any help please? Thanks in advance.

PS. I also have the sleep error (I "translated" this script from batch --> shell and "sleep" was the replacement I found for "pause")

Solution

I believe this should be closer to what you need :

#!/bin/bash
# -*- coding: utf-8 -*-
lib=/home/b04280/Transfert/Libs
classpath=$(echo "$lib"/*.jar | tr ' ' ':')
fic_in=/home/b04280/Transfert/rgeII.xlsx/
rep_in=/home/b04280/Transfert/rgeII/
rep_out=/home/b04280/Transfert/rgeIIcible/
javac -cp "$classpath" Element.java
javac -cp "$classpath" RGE.java
java -Xms1024m -Xmx1024m -cp "$classpath" RGE "$fic_in" "$rep_in" "$rep_out" > docx.txt

In particular :

unix paths
quoted variables to avoid them being parsed as multiple arguments if their values contain spaces
in the last command RGE is a class name rather than a file path, you specify memory settings, plus the command produces useful output ; it seems to me it should execute the code (java) rather than compile it (javac)
I'm not sure it's necessary, but removing the trailing slash from $LIB's value avoids having double slashes in $CLASSPATH which might confuse java[c]
removed the useless exports (they'd be useful if you invoked other bash scripts or binaries that would rely on those variables being set, but you're just passing them as parameters)
applied naming conventions (avoid uppercase variables as they might conflict with environment variables, use snake_case rather than camelCase).

I'm not sure in your context whether you're executing the linux version of the java[c] binaries or the windows one. If it's the windows one you'll need to replace the tr ' ' ':' part by tr ' ' ';' as the classpath on windows is semi-colon separated rather than colon-separated.