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feat: add flexible samples
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‎flexible/java-25/micronaut-helloworld/README.md‎

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# Micronaut Application on Google App Engine Flex with Java 25
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This sample shows how to deploy a [Micronaut](https://micronaut.io/)
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application to Google App Engine Flex.
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## Deploying
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```bash
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gcloud app deploy
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```
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To view your app, use command:
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```
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gcloud app browse
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```
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Or navigate to `https://<your-project-id>.appspot.com`.

‎flexible/java-25/micronaut-helloworld/micronaut-cli.yml‎

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# Copyright 2023 Google LLC
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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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# http://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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profile: service
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defaultPackage: com.example.appengine
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---
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testFramework: junit
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sourceLanguage: java

‎flexible/java-25/micronaut-helloworld/pom.xml‎

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<?xml version="1.0" encoding="UTF-8"?>
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<!--
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Copyright 2023 Google LLC
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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<project xmlns="http://maven.apache.org/POM/4.0.0" 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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<groupId>com.example.appengine.flexible</groupId>
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<artifactId>micronaut-helloworld</artifactId>
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<version>0.1</version>
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<!--
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The parent pom defines common style checks and testing strategies for our samples.
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Removing or replacing it should not affect the execution of the samples in anyway.
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-->
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<parent>
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<groupId>com.google.cloud.samples</groupId>
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<artifactId>shared-configuration</artifactId>
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<version>1.2.0</version>
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</parent>
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<properties>
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<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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<exec.mainClass>com.example.appengine.Application</exec.mainClass>
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<maven.compiler.target>21</maven.compiler.target>
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<maven.compiler.source>21</maven.compiler.source>
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<micronaut.version>3.10.3</micronaut.version>
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</properties>
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<dependencies>
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<dependency>
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<groupId>io.micronaut</groupId>
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<artifactId>micronaut-inject</artifactId>
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<version>${micronaut.version}</version>
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<scope>compile</scope>
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</dependency>
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<dependency>
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<groupId>io.micronaut</groupId>
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<artifactId>micronaut-validation</artifactId>
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<version>${micronaut.version}</version>
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<scope>compile</scope>
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</dependency>
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<dependency>
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<groupId>io.micronaut</groupId>
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<artifactId>micronaut-runtime</artifactId>
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<version>${micronaut.version}</version>
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<scope>compile</scope>
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</dependency>
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<dependency>
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<groupId>io.micronaut</groupId>
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<artifactId>micronaut-http-client</artifactId>
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<version>${micronaut.version}</version>
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<scope>compile</scope>
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</dependency>
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<dependency>
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<groupId>javax.annotation</groupId>
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<artifactId>javax.annotation-api</artifactId>
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<version>1.3.2</version>
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<scope>compile</scope>
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</dependency>
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<dependency>
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<groupId>io.micronaut</groupId>
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<artifactId>micronaut-http-server-netty</artifactId>
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<version>${micronaut.version}</version>
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<scope>compile</scope>
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</dependency>
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<dependency>
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<groupId>junit</groupId>
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<artifactId>junit</artifactId>
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<version>4.13.2</version>
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<scope>test</scope>
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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.google.cloud.tools</groupId>
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<artifactId>appengine-maven-plugin</artifactId>
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<version>2.8.0</version>
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<configuration>
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<projectId>GCLOUD_CONFIG</projectId>
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<version>micronaut-helloworld</version>
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</configuration>
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</plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-shade-plugin</artifactId>
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<version>3.5.1</version>
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<executions>
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<execution>
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<phase>package</phase>
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<goals>
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<goal>shade</goal>
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</goals>
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<configuration>
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<transformers>
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<transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
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<mainClass>${exec.mainClass}</mainClass>
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</transformer>
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<transformer implementation="org.apache.maven.plugins.shade.resource.ServicesResourceTransformer"/>
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</transformers>
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</configuration>
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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.mojo</groupId>
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<artifactId>exec-maven-plugin</artifactId>
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<version>3.1.1</version>
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<configuration>
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<executable>java</executable>
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<arguments>
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<argument>-noverify</argument>
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<argument>-XX:TieredStopAtLevel=1</argument>
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<argument>-Dcom.sun.management.jmxremote</argument>
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<argument>-classpath</argument>
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<classpath/>
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<argument>${exec.mainClass}</argument>
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</arguments>
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</configuration>
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</plugin>
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<plugin>
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<artifactId>maven-surefire-plugin</artifactId>
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<version>3.2.5</version>
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</plugin>
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<plugin>
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<groupId>org.apache.maven.plugins</groupId>
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<artifactId>maven-compiler-plugin</artifactId>
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<version>3.12.1</version>
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<configuration>
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<encoding>UTF-8</encoding>
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<compilerArgs>
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<arg>-parameters</arg>
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</compilerArgs>
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<annotationProcessorPaths>
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<path>
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<groupId>io.micronaut</groupId>
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<artifactId>micronaut-inject-java</artifactId>
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<version>${micronaut.version}</version>
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</path>
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<path>
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<groupId>io.micronaut</groupId>
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<artifactId>micronaut-validation</artifactId>
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<version>${micronaut.version}</version>
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</path>
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</annotationProcessorPaths>
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</configuration>
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<executions>
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<execution>
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<id>test-compile</id>
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<goals>
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<goal>testCompile</goal>
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</goals>
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<configuration>
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<compilerArgs>
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<arg>-parameters</arg>
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</compilerArgs>
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<annotationProcessorPaths>
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<path>
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<groupId>io.micronaut</groupId>
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<artifactId>micronaut-inject-java</artifactId>
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<version>${micronaut.version}</version>
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</path>
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<path>
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<groupId>io.micronaut</groupId>
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<artifactId>micronaut-validation</artifactId>
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<version>${micronaut.version}</version>
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</path>
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</annotationProcessorPaths>
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</configuration>
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</execution>
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</executions>
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</plugin>
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</plugins>
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</build>
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</project>

‎flexible/java-25/micronaut-helloworld/src/main/appengine/app.yaml‎

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# Copyright 2023 Google LLC
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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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# http://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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# [START gae_flex_java25_yaml]
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runtime: java
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env: flex
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service: helloworld-java25-flex
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runtime_config:
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operating_system: ubuntu24
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runtime_version: 25
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handlers:
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- url: /.*
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script: this field is required, but ignored
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manual_scaling:
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instances: 1
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# [END gae_flex_java25_yaml]

‎flexible/java-25/micronaut-helloworld/src/main/java/com/example/appengine/Application.java‎

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/*
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* Copyright 2023 Google LLC
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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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* http://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 com.example.appengine;
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import io.micronaut.runtime.Micronaut;
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public class Application {
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public static void main(String[] args) {
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Micronaut.run(Application.class);
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}
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}

‎flexible/java-25/micronaut-helloworld/src/main/java/com/example/appengine/HelloController.java‎

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/*
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* Copyright 2023 Google LLC
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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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* http://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 com.example.appengine;
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import io.micronaut.http.MediaType;
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import io.micronaut.http.annotation.Controller;
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import io.micronaut.http.annotation.Get;
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import io.micronaut.http.annotation.Produces;
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@Controller("/")
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public class HelloController {
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@Get("/")
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@Produces(MediaType.TEXT_PLAIN)
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public String index() {
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return "Hello World!";
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}
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}

‎flexible/java-25/micronaut-helloworld/src/main/resources/application.yml‎

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# Copyright 2023 Google LLC
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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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# http://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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micronaut:
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application:
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name: micronaut

‎flexible/java-25/micronaut-helloworld/src/main/resources/logback.xml‎

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<!--
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Copyright 2023 Google LLC
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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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http://www.apache.org/licenses/LICENSE-2.0
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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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<configuration>
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<appender name="STDOUT" class="ch.qos.logback.core.ConsoleAppender">
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<withJansi>true</withJansi>
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<!-- encoders are assigned the type
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ch.qos.logback.classic.encoder.PatternLayoutEncoder by default -->
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<encoder>
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<pattern>%cyan(%d{HH:mm:ss.SSS}) %gray([%thread]) %highlight(%-5level) %magenta(%logger{36}) - %msg%n</pattern>
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</encoder>
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</appender>
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<root level="info">
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<appender-ref ref="STDOUT" />
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</root>
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</configuration>

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