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<build>
  <resources>
    <resource>
      <directory>src/main/resources</directory>
      <filtering>true</filtering>
      <includes>
        <include>**/version.txt</include>
      </includes>
    </resource>
    <resource>
      <directory>src/main/resources</directory>
      <filtering>false</filtering>
      <excludes>
        <exclude>**/version.txt</exclude>
      </excludes>
    </resource>
  </resources>
  <!-- weitere Einträge ... -->
</build>

<build> <resources> <resource> <directory>src/main/resources</directory> <filtering>true</filtering> <includes> <include>**/version.txt</include> </includes> </resource> <resource> <directory>src/main/resources</directory> <filtering>false</filtering> <excludes> <exclude>**/version.txt</exclude> </excludes> </resource> </resources> <!-- weitere Einträge ... --> </build>

${project.version}

${project.version}

String versionString = Files.readString(Paths.get(
    ApplicationBean.class.getClassLoader()
    .getResource("version.txt").toURI()));

String versionString = Files.readString(Paths.get( ApplicationBean.class.getClassLoader() .getResource("version.txt").toURI()));

try (InputStream in = getClass().getResourceAsStream("/version.txt")) {
    String versionString = new String(in.readAllBytes());
} catch (IOException ex) {
    ex.printStackTrace();
}

try (InputStream in = getClass().getResourceAsStream("/version.txt")) { String versionString = new String(in.readAllBytes()); } catch (IOException ex) { ex.printStackTrace(); }