Mylyn Wikitext example (plain java, using maven)

MarkdownHelloWorld.java

import java.io.StringWriter;
import org.eclipse.mylyn.wikitext.core.parser.MarkupParser;
import org.eclipse.mylyn.wikitext.core.parser.builder.HtmlDocumentBuilder;
import org.eclipse.mylyn.wikitext.core.parser.markup.MarkupLanguage;
import org.eclipse.mylyn.wikitext.markdown.core.MarkdownLanguage;

public class MarkdownHelloWorld {

  public static void main(String[] args) {
    StringBuilder sb = new StringBuilder();
    sb.append("# Heading 1\n");
    sb.append("\n");
    sb.append("Hello World!\n");
    sb.append("\n");
    sb.append("* Lorem\n");
    sb.append("* Ipsum\n");
    sb.append("\n");
    sb.append("This is **Markdown**  language.\n");
    String text = sb.toString();

    MarkupLanguage markupLanguage = new MarkdownLanguage();

    StringWriter writer = new StringWriter();
    HtmlDocumentBuilder builder = new HtmlDocumentBuilder(writer);
    builder.setEmitAsDocument(false);
    MarkupParser parser = new MarkupParser(markupLanguage, builder);
    parser.parse(text);
    System.out.println(writer.toString());
  }
}

pom.xml

<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>com.company.example</groupId>
  <artifactId>helloworld-markdown</artifactId>
  <version>0.0.1-SNAPSHOT</version>

  <dependencies>
    <dependency>
      <groupId>org.eclipse.mylyn.docs</groupId>
      <artifactId>org.eclipse.mylyn.wikitext.markdown.core</artifactId>
      <version>2.6.0.v20150901-2143</version>
    </dependency>
  </dependencies>

  <repositories>
    <repository>
      <id>bintray.jmini.maven</id>
      <url>http://dl.bintray.com/jmini/maven/</url>
    </repository>
  </repositories>

</project>