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Groups > comp.lang.java.programmer > #38306

Re: Need to modify a legacy closed app

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On Wed, 30 May 2018 21:19:29 -0400, Arne Vajhøj <arne@vajhoej.dk>
wrote:
>On 5/30/2018 3:38 PM, Michael Keith wrote:
>> I am tasked with modifying a legacy app which consists of an .exe file
>> and several hundred .jar files. Is is launched by starting the .exe,
>> which then - somehow - initialises the whole darn thing. This presents
>> the first difficulty, as I have no idea what the 'main' .jar file is.
>
>Check if you have the source code and build scripts somewhere.
>
>Yes => change code, rebuild, test and deploy.
>
>No =>
>
>1) Check if you have legal right to reverse engineer and modify code.
>2) Get a Java decompiler and generate source code from the Java byte code.
>3) change code, rebuild, test and deploy.
>
>Arne
Hi Arne,
thanks for answering.
No, we don't have the sources. As for the legal stuff that's my boss'
concern.
I know of java decompilers, but looking at the sheer number of .jar
files I was hoping for a short-cut.
Any other idea maybe?

Best regards
M'

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Thread

Need to modify a legacy closed app Michael Keith <mjkeith@gmx.de> - 2018-05-30 21:38 +0200
  Re: Need to modify a legacy closed app Arne Vajhøj <arne@vajhoej.dk> - 2018-05-30 21:19 -0400
    Re: Need to modify a legacy closed app Michael Keith <mjkeith@gmx.de> - 2018-05-31 13:15 +0200
      Re: Need to modify a legacy closed app Martin Gregorie <martin@mydomain.invalid> - 2018-05-31 21:50 +0000
      Re: Need to modify a legacy closed app Arne Vajhøj <arne@vajhoej.dk> - 2018-05-31 20:32 -0400

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