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ObjectBox build.gradle

Trying out to use ObjectBox as java desktop database. However after following the documentation on the web site https://docs.objectbox.io/java-desktop-apps its not working. No MyObjectBox found error.
I am using eclipse ide Version: 2020-09 (4.17.0), Gradle: gradle-6.7.1
ObjectBox seems not creating the model automatically after build (no model folder generated). I have created the class using the Entity annotation, build the project eclipse, nothing happens. Anyone any ideas?
Works in android but not desktop. As i am not familiar with gradle project in eclipse. the following is the build file
buildscript {
ext.objectboxVersion = '2.8.1'
repositories {
jcenter()
}
dependencies {
classpath "io.objectbox:objectbox-gradle-plugin:$objectboxVersion"
}
}
apply plugin: 'java-library'
apply plugin: 'io.objectbox'
targetCompatibility = '1.8'
sourceCompatibility = '1.8'
repositories {
jcenter()
}
dependencies {
implementation "io.objectbox:objectbox-linux:$objectboxVersion"
implementation "io.objectbox:objectbox-macos:$objectboxVersion"
implementation "io.objectbox:objectbox-windows:$objectboxVersion"
}
apply plugin: 'io.objectbox'
dependencies {
implementation "io.objectbox:objectbox-java:$objectboxVersion"
annotationProcessor "io.objectbox:objectbox-processor:$objectboxVersion"
}
apply plugin: 'io.objectbox'

Doing apply plugin: 'io.objectbox' three times does not look good. Once is enough. Please check the ObjectBox Java examples for a working setup. In your case have a closer look at the java-main example for standalone Java applications.
This is the basic structure with ... where I left out the details (check the full build.gradle file from the example):
buildscript {
...
}
apply plugin: 'java'
apply plugin: 'application'
targetCompatibility = '1.8'
sourceCompatibility = '1.8'
mainClassName = "io.objectbox.example.Main"
dependencies {
...
}
// Apply plugin after dependencies block so they are not overwritten.
apply plugin: 'io.objectbox'
Maybe checkout the example and start from there?

Could not find or load main class in Groovy gradle project

I have groovy application that i want to pack in executable jar with gradle.
The problem is when the jar is done i have error: Could not find or load main class .
Here is my build.gradle:
group 'com.demo'
version '1.0-SNAPSHOT'
apply plugin: 'groovy'
apply plugin: 'java'
apply plugin: 'idea'
apply plugin:'application'
mainClassName = 'com.demo.App'
buildscript {
repositories {
mavenCentral()
}
dependencies {}
}
repositories {
mavenCentral()
}
// java version dependency
sourceCompatibility = 1.8
targetCompatibility = 1.8
jar {
baseName = 'cim-configurator'
version = '0.1.0'
manifest {
attributes("Build-Time": new Date().format("yyyy-MM-dd HH:mm:ss"),
"Build-Jdk": System.getProperty("java.version"),
"Built-By": System.getProperty("user.name"),
"Created-By": "Gradle",
"Main-Class": "com.demo.App"
)
}
}
Here is the file hierarchy:
com.demo
ActiveMq
App
Database
Rbac
Run.groovy
Service

I think that using uberjar will fix your problem. It worked with similar case for me.

I had this exact same problem in a Groovy & Gradle project. This is the answer that fixed this problem.
TL;DR
Use the Shadow-jar plugin by adding the following plugin to your plugins block in build.gradle:
plugins {
id 'com.github.johnrengelman.shadow' version '5.0.0'
}
Then run ./gradlew shadowJar
You'll get a jar file emailer-all.jar, which can be run.

When does .m2 folder gets created while using gradle with Java

I am currently working on Java with gralde where the build.properties file looks like this
apply plugin: 'java'
apply plugin: 'eclipse'
apply plugin: 'maven'
apply plugin: 'idea'
apply plugin: 'groovy'
sourceCompatibility = JavaVersion.VERSION_1_8
targetCompatibility = JavaVersion.VERSION_1_8
//Artifactory Central Repository
buildscript {
repositories {
maven {
url 'abc'
credentials {
username = ""
password = ""
}
I am totally new to this framework and have the following questions:
Here, I understand that the dependencies are getting downloaded from the maven repository. And wondering if .m2 folder will be created when I execute this. or will this work without creating .m2 local repo.
I read that local repo is needed only for maven, not grade.
So, in this case where Gradle is used to access maven repo to download dependencies, is .m2 folder needed.
When does this .m2 folder gets created?
After the Gradle build is successful, I did check in my {user home} but there are no .m2 created
I did try getting info from Google but didn't get any clarity on this.
confused on how does Gradle uses .m2 while building its project.

Add multi project itself as a dependency in another project

After a lot of searching, it was the last option to raise it here! In eclipse, I am designing such project structure using Gradle, as shown below...
Algorithms //Parent Project
-SubModuleCore //Child Project for common utilities & dependencies
-build.gradle
-SubModuleOne //Child project for any operation
-build.gradle //Added 'SubModuleCore' as a dependency like compile project(':SubModuleCore')
-SubModuleTwo //Child project for another operation
-build.gradle //Added 'SubModuleCore' as a dependency like compile project(':SubModuleCore')
-build.gradle
-settings.gradle
Services //Stand-Alone project
-build.gradle //Here I want to add 'Algorithms' as a single dependency
-settings.gradle
Project structures are same in eclipse work-space as shown above. I am able to generate individual .jar of Algorithms project. So the problem is I want to add this Algorithms project as a single dependency in project Services like compile project(':Algorithms'). But eclipse just saying 'shut-up!'. I don't want to publish it somewhere like maven central / jitpack etc. instead I want to do it locally. I'm trying this way...
Services/build.gradle
apply plugin: 'war'
apply plugin: 'java'
apply plugin: 'eclipse'
apply plugin: 'eclipse-wtp'
project.webAppDirName = 'WebContent'
repositories {
jcenter()
mavenCentral()
}
dependencies {
compile fileTree(dir: 'lib', include: ['*.jar'])
compile project(':Algorithms')
}
Services/settings.gradle
rootProject.name = 'Services'
include 'Algorithms'
project(':Algorithms').projectDir = new File(settingsDir, '../Algorithms')
Algorithms/build.gradle
apply plugin: 'java'
apply plugin: 'eclipse'
sourceCompatibility = "1.8";
targetCompatibility = "1.8";
subprojects {
apply plugin: 'java'
apply plugin: 'eclipse'
sourceCompatibility = "1.8";
targetCompatibility = "1.8";
buildscript {
dependencies {
repositories {
jcenter()
mavenCentral()
}
}
}
repositories {
jcenter()
mavenCentral()
}
}
subprojects.each { subproject ->
evaluationDependsOn(subproject.path)
}
jar.dependsOn subprojects.tasks['classes']
jar {
baseName = 'algorithms'
subprojects.each { subproject ->
from subproject.sourceSets.main.output.classesDir
}
from files('resources/log4j2.xml')
from files('resources/application.properties')
}
Algorithms/settings.gradle
rootProject.name = 'Algorithms'
include ':SubModuleCore', ':SubModuleOne', ':SubModuleTwo'
I tried several solutions from SO, still not succeeded. Somebody please help me, I got stuck badly here. It seems I am very close to this, but don't know what is missing!
Thanks

You can use the includeBuild feature.
Declare the included build in Services/settings.gradle
rootProject.name='Services'
includeBuild '../Algorithms'
and then express the dependency using
compile "${project.group}:${project.name}"
where project group and name the one from the Algorithms project.

plugin with id spring-boot not found in parent build.gradle

I have below project structure:
java/
build.gradle
settings.gradle
projectA/
build.gradle
projectB/
build.gradle
When I put below codes in, e.g. projectA's build.gradle,
buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath("org.springframework.boot:spring-boot-gradle-plugin:1.2.6.RELEASE")
}
}
apply plugin: 'java'
apply plugin: 'eclipse'
apply plugin: 'spring-boot'
...
everything works fine.
But if I put the above code in Java's build.gradle:
subprojects {
buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath("org.springframework.boot:spring-boot-gradle-plugin:1.2.6.RELEASE")
}
}
apply plugin: 'java'
apply plugin: 'eclipse'
apply plugin: 'spring-boot'
...
}
When running gradle clean build, it keeps reporting below error:
Plugin with id 'spring-boot' not found.
Anyone encountered this issue before? And why?

I figured out a solution but don't know why. Will spent some time reading the docs during the weekend...
Change multi-project build.gradle to below:
buildscript {
repositories {
mavenCentral()
}
dependencies {
classpath("org.springframework.boot:spring-boot-gradle-plugin:1.2.6.RELEASE")
}
}
subprojects {
apply plugin: 'java'
apply plugin: 'eclipse'
apply plugin: 'spring-boot'
...
}
i.e move buildscript out of subprojects

Try using fully qualified name as below:
plugins{
id 'org.springframework.boot' version '2.0.3.RELEASE'
id 'java'
}

You need to specify version of some plugins, you just have to. But gradle doesn't want multiple different versions, even though you type the same version in multiple files, if they include each other it won't work.
So to fix that you have to move common plugin to the root project, it doesn't matter if some projects don't use it, read further. Here is the trick part, you need to put apply false in the root project to the plugins. Thanks to that it won't be applied to the root and other projects but it will be applied to all of the projects you will add the plugin to.
So in root you would put:
plugins{
id 'org.springframework.boot' version '2.0.3.RELEASE' apply false
}
But in subproject you put it without the version
plugins {
id 'org.springframework.boot'
}
Also don't forget to put include statements in the root project, for all the folders that root needs to apply to.