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Editorial Team
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Asked: 2026-05-20T04:49:43+00:00

When I am trying to this parameter to Proguard, it throws this exception: java

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When I am trying to this parameter to Proguard, it throws this exception:

java -Xms128M -Xmx256M -jar “../../../tools/proguard/proguard.jar” @game_specific.pro -libraryjars “C:/Program Files/Java/jdk1.5.0_22/jre/lib/rt.jar”
Error: Expecting class path separator ‘;’ before ‘Files/Java/jdk1.5.0_22/jre/lib/rt.jar in argument number 3

This is due to the space in the file name, I know that much. I have tried various work-arounds with ” and ‘, but the only thing that works is when I use progra~1 in the path.
This is not a viable solution for me, since this command should be able to run on a lot of different computer with various paths to Java.

What am I doing wrong ?

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1 Answer

  1. Editorial Team

    For the sake of convenience, ProGuard accepts arbitrarily grouped command-line arguments, using shell quotes, e.g.:

    java -jar proguard.jar "-keep public class * { public <methods>; }"

    The shell groups the arguments and gobbles the quotes. As a result, file names containing spaces have to be quoted once more, e.g. with different quotes:

    java -jar proguard.jar "-injars 'some input.jar'"

    This double-quoting problem doesn’t exist for options in configuration files.

    The issue is mentioned in the ProGuard manual.

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