project runs in the IDE but not when a jar | Java Community | Help. Code. Learn. | Page 1

narrow pasture May 25, 2023, 5:26 PM

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When i compile my project it doesn't run

humble epochBOT May 25, 2023, 5:26 PM

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narrow pasture May 25, 2023, 5:26 PM

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no error no nothing

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just does nothing

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when i open teh jar in a java decompiler it shows all the correct files

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this is also the case for other projects not just this one

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even tried using cmd to compile it and still doesn't work

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it used to work though

velvet thistle May 25, 2023, 7:08 PM

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What is the cylorun file?

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So that's a folder. Where is your jar file?

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Are you able run your program by typing "java Main" in your Command Prompt?

narrow pasture May 25, 2023, 8:44 PM

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velvet thistle What is the cylorun file?

it's just the package name

narrow pasture May 25, 2023, 8:46 PM

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velvet thistle Are you able run your program by typing "java Main" in your Command Prompt?

how would i do this

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i used to be able to compile shit into jar files but now they don't work

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i tried cd path to project root

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and java Main

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or path to the jar

velvet thistle May 25, 2023, 8:47 PM

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Open Command Prompt
Make sure it is direct to the same folder as your class files
Type java Main

narrow pasture May 25, 2023, 8:48 PM

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Error: Could not find or load main class main Caused by: java.lang.ClassNotFoundException: main

sudden crane May 25, 2023, 8:57 PM

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narrow pasture ``Error: Could not find or load main class main Caused by: java.lang.ClassNotFou...

what are the contents of your MANIFEST.MF file inside your META-INF folder ?

narrow pasture May 25, 2023, 8:59 PM

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sudden crane what are the contents of your `MANIFEST.MF` file inside your `META-INF` folder ?

Manifest-Version: 1.0 Main-Class: me.cylorun.Main

sudden crane May 25, 2023, 9:02 PM

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how did you build the jar ?

narrow pasture May 25, 2023, 9:03 PM

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project structure> artifacts> jar from modules with dependencies> all modules, me.cylorun.Main

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then ok

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build>build artifacts>build

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IntelliJ btw

sudden crane May 25, 2023, 9:05 PM

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what's the name of the jar

narrow pasture May 25, 2023, 9:05 PM

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shfinder.jar

sudden crane May 25, 2023, 9:06 PM

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open cmd navigate to the correct folder then type:
java -jar shfinder.jar

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tell me what the output is

narrow pasture May 25, 2023, 9:07 PM

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correct folder?

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being a folder with the jar

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or the project root

sudden crane May 25, 2023, 9:07 PM

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correct folder, the folder in which the jar is located. Alternatively provide the full path to the jar

narrow pasture May 25, 2023, 9:07 PM

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no main manifest attribute, in shFinder.jar

sudden crane May 25, 2023, 9:11 PM

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you aren't using a build system like maven or gradle, are you ?

narrow pasture May 25, 2023, 9:12 PM

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im using gradle

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and groovy

sudden crane May 25, 2023, 9:14 PM

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then you don't build the jar through intelliJ but through gradle. Gradle should provide the task build->jar

narrow pasture May 25, 2023, 9:16 PM

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build->jar : The term 'build->jar' is not recognized as the name of a cmdlet, function, script file, or operable program. Check the spelling of the name, or if a path was included, verify that the path is correct and try again.
At line:1 char:1

build->jar

  + CategoryInfo          : ObjectNotFound: (build->jar:String) [], CommandNotFoundException
  + FullyQualifiedErrorId : CommandNotFoundException

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uuh 😅

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maybe im running it in the wrong place

sudden crane May 25, 2023, 9:17 PM

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did you try running build->jar in your console xD

narrow pasture May 25, 2023, 9:17 PM

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yes

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or in the project terminal

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sorry for being kinda dumb

sudden crane May 25, 2023, 9:19 PM

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in the top right corner you have a gradle tab

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I meant that you execute the task in there

narrow pasture May 25, 2023, 9:20 PM

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oh xD

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lol

sudden crane May 25, 2023, 9:20 PM

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alternatively you can run ProjectName [jar] in your console or gradle build jar

narrow pasture May 25, 2023, 9:22 PM

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ah ok

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where will the jar file be located?

sudden crane May 25, 2023, 9:24 PM

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in your build directory

narrow pasture May 25, 2023, 9:25 PM

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it's not there

sudden crane May 25, 2023, 9:28 PM

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hmm did the task complete successfully ?

narrow pasture May 25, 2023, 9:28 PM

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seems like it

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this is what it says

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> Task :compileJava UP-TO-DATE
> Task :processResources UP-TO-DATE
> Task :classes UP-TO-DATE
> Task :jar UP-TO-DATE

BUILD SUCCESSFUL in 102ms
3 actionable tasks: 3 up-to-date
21:28:04: Execution finished 'jar'.

sudden crane May 25, 2023, 9:29 PM

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could you share your build.gradle file

narrow pasture May 25, 2023, 9:30 PM

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    id 'java'
}

group 'me.cylorun'
version '1.0-SNAPSHOT'

repositories {
    mavenCentral()
    maven {
        url "https://jitpack.io"
      maven { url 'https://maven.izzel.io/releases' }

    }
}

dependencies {
    testImplementation 'org.junit.jupiter:junit-jupiter-api:5.8.1'
    testRuntimeOnly 'org.junit.jupiter:junit-jupiter-engine:5.8.1'
    implementation 'com.github.KaptainWutax:SEED:master-SNAPSHOT'
    implementation 'com.github.KaptainWutax:MathUtils:5531c4a87b0f1bb85d1dab2bdd18ce375400626a'
    implementation 'io.izzel:nbt:1.1.0'


}

test {
    useJUnitPlatform()
}```

sudden crane May 25, 2023, 9:32 PM

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yeah I figured. You need to add this block and configure it:

jar {
    manifest {
        attributes "Main-Class" : "path.to.Main"
    }
}

narrow pasture May 25, 2023, 9:34 PM

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oh okay

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is it in build\libs?

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because that one still doesn't run

sudden crane May 25, 2023, 9:36 PM

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yeah its in build/libs

narrow pasture May 25, 2023, 9:36 PM

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hmmm

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why does it not run 😭

sudden crane May 25, 2023, 9:37 PM

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where did you add the jar block ?

narrow pasture May 25, 2023, 9:37 PM

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at the bottom

sudden crane May 25, 2023, 9:37 PM

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and you did configure it ?

narrow pasture May 25, 2023, 9:37 PM

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yeah

sudden crane May 25, 2023, 9:37 PM

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the jar is compiled and appearing ?

narrow pasture May 25, 2023, 9:37 PM

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jar { manifest { attributes "Main-Class" : "me.cylorun.Main" }

narrow pasture May 25, 2023, 9:37 PM

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sudden crane the jar is compiled and appearing ?

yes

sudden crane May 25, 2023, 9:38 PM

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and what's the output when running in the console

narrow pasture May 25, 2023, 9:39 PM

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not loading that lib

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Hmm

sudden crane May 25, 2023, 9:39 PM

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you are trying to bundle the libraries inside the jar

narrow pasture May 25, 2023, 9:39 PM

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yes

sudden crane May 25, 2023, 9:40 PM

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... you should have lead with that

narrow pasture May 25, 2023, 9:40 PM

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oh shit

sudden crane May 25, 2023, 9:42 PM

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alright inside plugins add
id 'com.github.johnrengelman.shadow' version "7.1.2"
then run the shadowJar task that should have appeared

narrow pasture May 25, 2023, 9:43 PM

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aight

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got that done

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holy shit

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thank you so much

humble epochBOT May 25, 2023, 9:43 PM

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narrow pasture thank you so much

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narrow pasture May 25, 2023, 9:43 PM

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sorry for being kinda dumb regarding this stuff

#project runs in the IDE but not when a jar