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How to use Retrotranslator from the command line?
   1. Download and unzip the binary distribution file Retrotranslator-n.n.n-bin.zip, where n.n.n is the latest Retrotranslator release number.
   2. Compile your classes with Java 5.0 or Java 6 and put them into some directory, e.g. myclasses.
   3. Go to the unzipped directory and execute:
      java -jar retrotranslator-transformer-n.n.n.jar -srcdir myclasses
      Use appropriate options to verify the result and for troubleshooting, e.g. -verify, -classpath, -advanced, and -smart.
   4. Put retrotranslator-runtime-n.n.n.jar and backport-util-concurrent-n.n.jar into the classpath of your application if you use the Java 5.0 API.
   5. Run or debug the application as usual on Java 1.4.
The command line syntax:
java -jar retrotranslator-transformer-n.n.n.jar <options>
or
java -cp retrotranslator-transformer-n.n.n.jar net.sf.retrotranslator.transformer.Retrotranslator <options>
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java -jar retrotranslator-transformer-1.2.9.jar -srcdir 1.5classes -destdir 1.4classes
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backport-util-concurrent-3.1.jar
backport-util-concurrent-java12-3.1.jar
retrotranslator-runtime13-1.2.9.jar
retrotranslator-runtime-1.2.9.jar
retrotranslator-transformer-1.2.9.jar
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