need help recompiling java app | Java Community | Help. Code. Learn. | Page 1

tidal coveBOT Apr 18, 2023, 9:03 PM

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proper otter Apr 18, 2023, 9:04 PM

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source is not available and I didn't write the app

tidal coveBOT Apr 18, 2023, 9:04 PM

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103ms

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<@&765578700724371486>

Requested by Mr.Orange#1159

steel hollow Apr 18, 2023, 9:21 PM

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You want to compile something you don't have the source of. Right

proper otter Apr 18, 2023, 9:25 PM

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ya decompiled with jd

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and need to compile again

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the app is a big mess

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very old

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runs on proxmox ubuntu vm and accessing by vpn for the moment

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and having dev installs locally to try/test

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i recv'd a raw image of this machine from the dev

steel hollow Apr 18, 2023, 9:29 PM

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Decompiling doesn't work. It's a best attempt at describing what the bytecode does

proper otter Apr 18, 2023, 9:30 PM

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MailSrvlet.java:3: error: package de.xyz.dbaccess does not exist

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sure jd-gui decompiled

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i have a java file from the class

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cant i just patch the class files directly?

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how to define classpath for javac to find the stuff missing

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i have a WEB-INF/classes/de/xyz folder

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under jetty/webapps

steel hollow Apr 18, 2023, 9:34 PM

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proper otter cant i just patch the class files directly?

No. Like I said, decompiling doesn't work

steel hollow Apr 18, 2023, 9:35 PM

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proper otter how to define classpath for javac to find the stuff missing

As usual

proper otter Apr 18, 2023, 9:35 PM

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https://gist.github.com/MrAdhit/dd75133a89afe5954a3ac87921d4dce7

Gist

Decompile and Recompile classes.dex | Modding classes.dex in Java

Decompile and Recompile classes.dex | Modding classes.dex in Java - modclass.md

proper otter Apr 18, 2023, 9:36 PM

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steel hollow As usual

i dont know java anymore and didnt write the app myself

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never compiled this one

proper otter Apr 18, 2023, 9:37 PM

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steel hollow No. Like I said, decompiling doesn't work

why it doesn't work?

steel hollow Apr 18, 2023, 9:38 PM

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Just an absence of interest in making it work, I guess. Decompiling is useless unless you want to make modifications, and anyone who uses a decompiler and wants actual source from it would have no problem fixing everything that needs fixing alongside the modifications

proper otter Apr 18, 2023, 9:38 PM

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49 errors first, now just 22 errors

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i added one path

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error: package javax.servlet does not exist

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now to find this one...

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yeah i need mods because its another install

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need to mod hard coded stuff...

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error: package org.apache.velocity does not exist

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javac -classpath /var/somedb/jetty/webapps/somedb/WEB-INF/classes MailSrvlet.java

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gives just 22 errors out of 49 in the beginning

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i need to mod the outgoing mail smtp and text/rcpt in mail, two class files

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19 errors

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still got this:
error: package javax.servlet does not exist

tidal coveBOT Apr 19, 2023, 3:10 AM

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#need help recompiling java app