title: Why does pom.xml file give an unknown error
body: <p>I,m trying to learn spring boot and install spring boot to eclipse IDE. When I create my first project it shows an error in first line of pom.xml. It shows as unknown error.</p>
  
  <p>I tried many solutions from stackoverflow. But none of them work for me. </p>
  
  <p><a href="https://stackoverflow.com/questions/22154022/maven-pom-xml-error-in-eclipse">Maven pom.xml error in eclipse</a>
  <a href="https://stackoverflow.com/questions/4856307/when-maven-says-resolution-will-not-be-reattempted-until-the-update-interval-of">When maven says &quot;resolution will not be reattempted until the update interval of MyRepo has elapsed&quot;, where is that interval specified?</a></p>
  
  <p>My pom.xml as below.</p>
  
  <pre><code> &lt;?xml version="1.0" encoding="UTF-8"?&gt;
   &lt;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"&gt;
  &lt;modelVersion&gt;4.0.0&lt;/modelVersion&gt;
  &lt;parent&gt;
      &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
      &lt;artifactId&gt;spring-boot-starter-parent&lt;/artifactId&gt;
      &lt;version&gt;2.1.5.RELEASE&lt;/version&gt;
      &lt;relativePath/&gt; &lt;!-- lookup parent from repository --&gt;
  &lt;/parent&gt;
  &lt;groupId&gt;com.example&lt;/groupId&gt;
  &lt;artifactId&gt;demo&lt;/artifactId&gt;
  &lt;version&gt;0.0.1-SNAPSHOT&lt;/version&gt;
  &lt;name&gt;demo&lt;/name&gt;
  &lt;description&gt;Demo project for Spring Boot&lt;/description&gt;
  
  &lt;properties&gt;
      &lt;java.version&gt;1.8&lt;/java.version&gt;
  &lt;/properties&gt;
  
  &lt;dependencies&gt;
      &lt;dependency&gt;
          &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
          &lt;artifactId&gt;spring-boot-starter-web&lt;/artifactId&gt;
      &lt;/dependency&gt;
  
      &lt;dependency&gt;
          &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
          &lt;artifactId&gt;spring-boot-starter-test&lt;/artifactId&gt;
          &lt;scope&gt;test&lt;/scope&gt;
      &lt;/dependency&gt;
  &lt;/dependencies&gt;
  
  &lt;build&gt;
      &lt;plugins&gt;
          &lt;plugin&gt;
              &lt;groupId&gt;org.springframework.boot&lt;/groupId&gt;
              &lt;artifactId&gt;spring-boot-maven-plugin&lt;/artifactId&gt;
          &lt;/plugin&gt;
      &lt;/plugins&gt;
  &lt;/build&gt;
  
  &lt;/project&gt;
  </code></pre>
  
  <p>Can anyone help me for resolve this.</p>