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Added Clojure example
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‎README.MD‎

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@@ -46,7 +46,7 @@ A repository containing different java tutorials
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- [Streaming JSON validation](streaming-json-validation)
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## Miscellaneous 🎭
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- [JVM Rainbow - Mixing Java, Kotlin, Scala and Groovy](jvm-rainbow)
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- [JVM Rainbow - Mixing Java, Kotlin, Scala, Clojure and Groovy](jvm-rainbow)
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# Contributing
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‎jvm-rainbow/README.md‎

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# 🌈 JVM Rainbow
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## Using Java, Scala, Kotlin and Groovy
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## Using Java, Scala, Kotlin, Clojure and Groovy
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This projects demonstrates the possibility of writing and using multiple JVM languages in a single project and single root package with Maven. It serves to help others to easily configure their project if they need a subset or the whole configuration.
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This small project has been extracted from the following project: [hakky54/mutual-tls-ssl](https://github.com/Hakky54/mutual-tls-ssl) which contains example http client configuration and example http requests written in Java, Scala, Kotlin and Groovy.
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This small project has been extracted from the following project: [hakky54/mutual-tls-ssl](https://github.com/Hakky54/mutual-tls-ssl) which contains example http client configuration and example http requests written in Java, Scala, Kotlin, Clojure and Groovy.
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On this page you can find the [dependency](#required-dependencies) and [compiler/plugin configuration](#compiler-configuration) however, the detailed project configuration can be found in the [pom](pom.xml) file which contains the exact dependency/plugin version and configuration for unit testing.
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Unit tests are also present and integrated in the maven test phase. Run `mvn verify` to see it in action
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>${version.maven-compiler-plugin}</version>
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<configuration>
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<release>8</release>
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</configuration>
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<executions>
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<execution>
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<id>default-compile</id>
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<artifactId>kotlin-maven-plugin</artifactId>
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<version>${version.kotlin}</version>
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<configuration>
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<jvmTarget>11</jvmTarget>
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<jvmTarget>1.8</jvmTarget>
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</configuration>
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<executions>
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<execution>
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<groupId>net.alchim31.maven</groupId>
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<artifactId>scala-maven-plugin</artifactId>
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<version>${version.scala-maven-plugin}</version>
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<configuration>
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<source>1.8</source>
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<target>1.8</target>
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</configuration>
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<executions>
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<execution>
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<phase>generate-sources</phase>
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<goals>
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<goal>compile</goal>
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<goal>testCompile</goal>
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</executions>
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</plugin>
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<plugin>
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<groupId>com.theoryinpractise</groupId>
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<artifactId>clojure-maven-plugin</artifactId>
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<version>${version.clojure-maven-plugin}</version>
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<extensions>true</extensions>
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<configuration>
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<sourceDirectories>
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<sourceDirectory>src/main/java</sourceDirectory>
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</sourceDirectories>
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<temporaryOutputDirectory>true</temporaryOutputDirectory>
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</configuration>
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<executions>
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<execution>
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<id>compile-clojure</id>
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<phase>compile</phase>
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<goals>
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<goal>compile</goal>
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</goals>
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</execution>
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</executions>
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</plugin>
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<plugin>
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<groupId>org.codehaus.gmavenplus</groupId>
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<artifactId>gmavenplus-plugin</artifactId>
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<artifactId>groovy</artifactId>
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<version>${version.groovy}</version>
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</dependency>
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<dependency>
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<groupId>org.clojure</groupId>
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<artifactId>clojure</artifactId>
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<version>${version.clojure}</version>
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</dependency>
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```

‎jvm-rainbow/jvm-rainbow-app/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<parent>
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<groupId>io.github.hakky54</groupId>
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<artifactId>jvm-rainbow</artifactId>
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<version>1.0.0-SNAPSHOT</version>
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</parent>
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<artifactId>jvm-rainbow-app</artifactId>
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<dependencies>
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<dependency>
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<groupId>io.github.hakky54</groupId>
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<artifactId>jvm-rainbow-service</artifactId>
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<version>1.0.0-SNAPSHOT</version>
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</dependency>
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</dependencies>
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<build>
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<plugins>
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<plugin>
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<groupId>com.theoryinpractise</groupId>
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<artifactId>clojure-maven-plugin</artifactId>
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<version>1.9.3</version>
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<extensions>true</extensions>
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<configuration>
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<temporaryOutputDirectory>true</temporaryOutputDirectory>
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<script>src/main/java/nl/altindag/jvm/rainbow/app/ClojureApp.clj</script>
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</configuration>
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</plugin>
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</plugins>
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</build>
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</project>

‎jvm-rainbow/jvm-rainbow-app/src/main/java/nl/altindag/jvm/rainbow/app/ClojureApp.clj‎

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(ns nl.altindag.jvm.rainbow.app.ClojureApp
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(:gen-class)
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(:require [nl.altindag.jvm.rainbow.service.ClojureService :as clojureService] )
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(:import
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[nl.altindag.jvm.rainbow.service JavaService]
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[nl.altindag.jvm.rainbow.service KotlinService]
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[nl.altindag.jvm.rainbow.service GroovyService]
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[nl.altindag.jvm.rainbow.service ScalaService]))
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(defn -main
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[& args]
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(println (.hello (new JavaService))))
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(println (.hello (new ScalaService)))
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(println (.hello (new GroovyService)))
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(println (.hello (clojureService/reify-greetings-service)))
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(println (.hello (new KotlinService)))
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(-main)

‎jvm-rainbow/jvm-rainbow-app/src/main/java/nl/altindag/jvm/rainbow/app/GroovyApp.groovy‎

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/*
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* Copyright 2022 Thunderberry.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package nl.altindag.jvm.rainbow.app
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import clojure.java.api.Clojure
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import clojure.lang.IFn
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import nl.altindag.jvm.rainbow.service.GreetingsService
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import nl.altindag.jvm.rainbow.service.GroovyService
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import nl.altindag.jvm.rainbow.service.JavaService
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import nl.altindag.jvm.rainbow.service.KotlinService
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import nl.altindag.jvm.rainbow.service.ScalaService
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static void main(String[] args) {
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println new JavaService().hello()
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println new GroovyService().hello()
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println new KotlinService().hello()
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println new ScalaService().hello()
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// Below steps are required to call Clojure from Groovy
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IFn require = Clojure.var("clojure.core", "require")
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require.invoke(Clojure.read("nl.altindag.jvm.rainbow.service.ClojureService"))
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IFn greetingsFactory = Clojure.var("nl.altindag.jvm.rainbow.service.ClojureService", "reify-greetings-service")
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GreetingsService clojureService = (GreetingsService) greetingsFactory.invoke()
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println clojureService.hello()
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}

‎jvm-rainbow/jvm-rainbow-app/src/main/java/nl/altindag/jvm/rainbow/app/JavaApp.java‎

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/*
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* Copyright 2022 Thunderberry.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package nl.altindag.jvm.rainbow.app;
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import clojure.java.api.Clojure;
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import clojure.lang.IFn;
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import nl.altindag.jvm.rainbow.service.GreetingsService;
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import nl.altindag.jvm.rainbow.service.GroovyService;
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import nl.altindag.jvm.rainbow.service.JavaService;
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import nl.altindag.jvm.rainbow.service.KotlinService;
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import nl.altindag.jvm.rainbow.service.ScalaService;
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public class JavaApp {
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public static void main(String[] args) {
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System.out.println(new JavaService().hello());
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System.out.println(new KotlinService().hello());
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System.out.println(new ScalaService().hello());
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System.out.println(new GroovyService().hello());
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// Below steps are required to call Clojure from Java
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IFn require = Clojure.var("clojure.core", "require");
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require.invoke(Clojure.read("nl.altindag.jvm.rainbow.service.ClojureService"));
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IFn greetingsFactory = Clojure.var("nl.altindag.jvm.rainbow.service.ClojureService", "reify-greetings-service");
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GreetingsService clojureService = (GreetingsService) greetingsFactory.invoke();
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System.out.println(clojureService.hello());
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}
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}

‎jvm-rainbow/jvm-rainbow-app/src/main/java/nl/altindag/jvm/rainbow/app/KotlinApp.kt‎

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/*
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* Copyright 2022 Thunderberry.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package nl.altindag.jvm.rainbow.app
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import clojure.java.api.Clojure
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import nl.altindag.jvm.rainbow.service.GreetingsService
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import nl.altindag.jvm.rainbow.service.GroovyService
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import nl.altindag.jvm.rainbow.service.JavaService
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import nl.altindag.jvm.rainbow.service.KotlinService
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import nl.altindag.jvm.rainbow.service.ScalaService
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const val clojureServiceNameSpace = "nl.altindag.jvm.rainbow.service.ClojureService"
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fun main() {
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println(JavaService().hello())
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println(KotlinService().hello())
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println(ScalaService().hello())
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println(GroovyService().hello())
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// Below steps are required to call Clojure from Kotlin
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val require = Clojure.`var`("clojure.core", "require")
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require.invoke(Clojure.read(clojureServiceNameSpace))
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val greetingsFactory = Clojure.`var`(clojureServiceNameSpace, "reify-greetings-service")
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val clojureService = greetingsFactory.invoke() as GreetingsService
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println(clojureService.hello())
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}

‎jvm-rainbow/jvm-rainbow-app/src/main/java/nl/altindag/jvm/rainbow/app/ScalaApp.scala‎

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/*
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* Copyright 2022 Thunderberry.
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*
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* Licensed under the Apache License, Version 2.0 (the "License");
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* you may not use this file except in compliance with the License.
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* You may obtain a copy of the License at
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*
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* https://www.apache.org/licenses/LICENSE-2.0
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*
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* Unless required by applicable law or agreed to in writing, software
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* distributed under the License is distributed on an "AS IS" BASIS,
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* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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* See the License for the specific language governing permissions and
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* limitations under the License.
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*/
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package nl.altindag.jvm.rainbow.app
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import clojure.java.api.Clojure
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import nl.altindag.jvm.rainbow.service._
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object ScalaApp {
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private val clojureServiceNameSpace: String = "nl.altindag.jvm.rainbow.service.ClojureService"
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def main(args: Array[String]): Unit = {
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println(new JavaService().hello())
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println(new KotlinService().hello())
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println(new ScalaService().hello())
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println(new GroovyService().hello())
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// Below steps are required to call Clojure from Scala
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val require = Clojure.`var`("clojure.core", "require")
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require.invoke(Clojure.read(clojureServiceNameSpace))
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val greetingsFactory = Clojure.`var`(clojureServiceNameSpace, "reify-greetings-service")
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val clojureService = greetingsFactory.invoke.asInstanceOf[GreetingsService]
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System.out.println(clojureService.hello)
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}
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}

‎jvm-rainbow/jvm-rainbow-service/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<project xmlns="http://maven.apache.org/POM/4.0.0"
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xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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<modelVersion>4.0.0</modelVersion>
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<parent>
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<groupId>io.github.hakky54</groupId>
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<artifactId>jvm-rainbow</artifactId>
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<version>1.0.0-SNAPSHOT</version>
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</parent>
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<artifactId>jvm-rainbow-service</artifactId>
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</project>

‎jvm-rainbow/jvm-rainbow-service/src/main/java/nl/altindag/jvm/rainbow/service/ClojureService.clj‎

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;
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; Copyright 2022 Thunderberry.
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;
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; Licensed under the Apache License, Version 2.0 (the "License");
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; you may not use this file except in compliance with the License.
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; You may obtain a copy of the License at
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;
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; https://www.apache.org/licenses/LICENSE-2.0
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;
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; Unless required by applicable law or agreed to in writing, software
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; distributed under the License is distributed on an "AS IS" BASIS,
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; WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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; See the License for the specific language governing permissions and
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; limitations under the License.
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;
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(ns nl.altindag.jvm.rainbow.service.ClojureService
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(:gen-class)
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(:import
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[nl.altindag.jvm.rainbow.service GreetingsService]))
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(defn reify-greetings-service
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[]
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(reify
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GreetingsService
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(hello [this] (str "Greetings from Clojure!"))))

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