001# Vaadin Hello World with Eclipse Maven and Jetty SOLVED

In this tutorial, I show you how create a basic hello world on Vaadin with eclipse, maven and jetty, step by step. See the video in my channel and the snippet in this blog.
POM.xml:

   



<!--xml version="1.0" encoding="UTF-8"?-->

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
  <modelVersion>4.0.0</modelVersion>

  <groupId>org.moumie</groupId>
  <artifactId>Vaadinlet03</artifactId>
  <version>0.0.1-SNAPSHOT</version>
  <packaging>war</packaging>

  <name>Vaadinlet03 Maven Webapp</name>
  <!-- FIXME change it to the project's website -->
  <url>http://www.example.com</url>

  <properties>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <maven.compiler.source>1.8</maven.compiler.source>
    <maven.compiler.target>1.8</maven.compiler.target>
    <vaadin.version>7.7.1</vaadin.version>
	<vaadin.plugin.version>7.7.1</vaadin.plugin.version>
	<jetty.plugin.version>9.3.9.v20160517</jetty.plugin.version>
  </properties>

  	<repositories>
		<repository>
			<id>vaadin-addons</id>
			<url>http://maven.vaadin.com/vaadin-addons</url>
		</repository>
		<repository>
			<id>vaadin-snapshots</id>
			<url>https://oss.sonatype.org/content/repositories/vaadin-snapshots/</url>
			<releases>
				<enabled>false</enabled>
			</releases>
			<snapshots>
				<enabled>true</enabled>
			</snapshots>
		</repository>
	</repositories>
	
				<dependencyManagement>
		<dependencies>
			<dependency>
				<groupId>com.vaadin</groupId>
				<artifactId>vaadin-bom</artifactId>
				<version>${vaadin.version}</version>
				<type>pom</type>
				<scope>import</scope>
			</dependency>
		</dependencies>
	</dependencyManagement>
	
  <dependencies>
    <dependency>
      <groupId>junit</groupId>
      <artifactId>junit</artifactId>
      <version>4.11</version>
      <scope>test</scope>
    </dependency>
    
    <dependency>
			<groupId>javax.servlet</groupId>
			<artifactId>javax.servlet-api</artifactId>
			<version>3.1.0</version>
			<scope>provided</scope>
		</dependency>
		<dependency>
			<groupId>com.vaadin</groupId>
			<artifactId>vaadin-server</artifactId>
		</dependency>
		<dependency>
			<groupId>com.vaadin</groupId>
			<artifactId>vaadin-push</artifactId>
		</dependency>
		<dependency>
			<groupId>com.vaadin</groupId>
			<artifactId>vaadin-client-compiled</artifactId>
		</dependency>
		<dependency>
			<groupId>com.vaadin</groupId>
			<artifactId>vaadin-themes</artifactId>
		</dependency>
				<dependency>
		    <groupId>org.eclipse.jdt.core.compiler</groupId>
		    <artifactId>ecj</artifactId>
		    <version>4.6.1</version>
		</dependency>
		<dependency> 
		 <groupId>com.vaadin</groupId> 
		 <artifactId>vaadin-client-compiler</artifactId>
         <version>${vaadin.version}</version> <scope>provided</scope> 
      </dependency>
  </dependencies>

  <build>
    <finalName>Vaadinlet03</finalName>
    <pluginManagement><!-- lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) -->
      <plugins>
        <plugin>
          <artifactId>maven-clean-plugin</artifactId>
          <version>3.1.0</version>
        </plugin>
        <!-- see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging -->
        <plugin>
          <artifactId>maven-resources-plugin</artifactId>
          <version>3.0.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-compiler-plugin</artifactId>
          <version>3.8.0</version>
        </plugin>
        <plugin>
          <artifactId>maven-surefire-plugin</artifactId>
          <version>2.22.1</version>
        </plugin>
        <plugin>
          <artifactId>maven-war-plugin</artifactId>
          <version>3.2.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-install-plugin</artifactId>
          <version>2.5.2</version>
        </plugin>
        <plugin>
          <artifactId>maven-deploy-plugin</artifactId>
          <version>2.8.2</version>
        </plugin>
        		<plugin>
				<groupId>org.eclipse.jetty</groupId>
				<artifactId>jetty-maven-plugin</artifactId>
				<version>${jetty.plugin.version}</version>
				<configuration>
					<scanIntervalSeconds>2</scanIntervalSeconds>
				</configuration>
			</plugin>
      </plugins>
    </pluginManagement>
  </build>
  
      	<profiles>
		<profile>
			<!-- Vaadin pre-release repositories -->
			<id>vaadin-prerelease</id>
			<activation>
				<activeByDefault>false</activeByDefault>
			</activation>

			<repositories>
				<repository>
					<id>vaadin-prereleases</id>
					<url>http://maven.vaadin.com/vaadin-prereleases</url>
				</repository>
			</repositories>
			<pluginRepositories>
				<pluginRepository>
					<id>vaadin-prereleases</id>
					<url>http://maven.vaadin.com/vaadin-prereleases</url>
				</pluginRepository>
			</pluginRepositories>
		</profile>
	</profiles>
</project>

		
   
  

Java Class:

  
import javax.servlet.annotation.WebServlet;

import com.vaadin.annotations.VaadinServletConfiguration;
import com.vaadin.server.VaadinRequest;
import com.vaadin.server.VaadinServlet;
import com.vaadin.ui.Label;
import com.vaadin.ui.UI;
import com.vaadin.ui.VerticalLayout;

public class Vaadinlet03UI extends UI{

	private static final long serialVersionUID = 1L;

	@Override
	protected void init(VaadinRequest request) {
		 final VerticalLayout layout = new VerticalLayout();
		 Label label = new Label("Hello World Vaadin !");
		 layout.addComponent(label);
	     layout.setMargin(true);
	     layout.setSpacing(true);
	        
	     setContent(layout);
		
	}
	
    @WebServlet(urlPatterns = "/*", name = "Vaadinlet03UIServlet", asyncSupported = true)
    @VaadinServletConfiguration(ui = Vaadinlet03UI.class, productionMode = false)
    
    public static class Vaadinlet03UIServlet extends VaadinServlet {
    }

}