How to use

segment

method

in

org.eclipse.core.runtime.IPath

/**
 * Returns the VM name from the given container ID path.
 * 
 * @param path the path
 * @return the VM name from the given container ID path
 */
public static String getVMName(IPath path) {
  return path.segment(2);
}    

public static boolean hasDotDot(IPath path) {
  for (int i = 0, length = path.segmentCount(); i < length; i++) {
    if (DOT_DOT.equals(path.segment(i)))
      return true;
  }
  return false;
}

public static boolean hasDotDot(IPath path) {
  for (int i = 0, length = path.segmentCount(); i < length; i++) {
    if (DOT_DOT.equals(path.segment(i)))
      return true;
  }
  return false;
}

@Override
public boolean belongsTo(String projectNameOrJarPath) {
  // used to remove pending jobs because the project was deleted... not to delete index files
  // can be found either by project name or JAR path name
  return projectNameOrJarPath.equals(this.containerPath.segment(0))
    || projectNameOrJarPath.equals(this.containerPath.toString());
}
@Override

protected boolean isNonProjectSpecificContainer(IPath containerPath) {
  if (containerPath.segmentCount() > 0) {
    String id= containerPath.segment(0);
    if (id.equals(JavaCore.USER_LIBRARY_CONTAINER_ID) || id.equals(JavaRuntime.JRE_CONTAINER)) {
      return true;
    }
  }
  return false;
}

protected void createUserLibrary(final Shell shell, IPath unboundPath) {
  String name= unboundPath.segment(1);
  String id= UserLibraryPreferencePage.ID;
  HashMap<String, Object> data= new HashMap<>(3);
  data.put(UserLibraryPreferencePage.DATA_LIBRARY_TO_SELECT, name);
  data.put(UserLibraryPreferencePage.DATA_DO_CREATE, Boolean.TRUE);
  PreferencesUtil.createPreferenceDialogOn(shell, id, new String[] { id }, data).open();
}

public boolean isDeprecated() {
  if (fEntryKind != IClasspathEntry.CPE_VARIABLE) {
    return false;
  }
  if (fPath.segmentCount() > 0) {
    return JavaCore.getClasspathVariableDeprecationMessage(fPath.segment(0)) != null;
  }
  return false;
}

private IPath fixDevice(IPath path) {
  if (path != null && path.getDevice() != null) {
    return path.setDevice(path.getDevice().toUpperCase());
  }
  if (Platform.OS_WIN32.equals(Platform.getOS()) && path != null && path.toString().startsWith("//")) {
    String server = path.segment(0);
    String pathStr = path.toString().replace(server, server.toUpperCase());
    return new Path(pathStr);
  }
  return path;
}

/**
 * @deprecated use {@link #getFileStore(IPath)} instead
 */
@Deprecated
@Override
public IFileStore getChild(IPath path) {
  IFileStore result = this;
  for (int i = 0, imax = path.segmentCount(); i < imax; i++)
    result = result.getChild(path.segment(i));
  return result;
}

private IPath getResolvedPath(IPath path) {
  if (path != null) {
    String varName= path.segment(0);
    if (varName != null) {
      IPath varPath= JavaCore.getClasspathVariable(varName);
      if (varPath != null) {
        return varPath.append(path.removeFirstSegments(1));
      }
    }
  }
  return null;
}

/**
 * @deprecated use {@link #getFileStore(IPath)} instead
 */
@Deprecated
@Override
public IFileStore getChild(IPath path) {
  IFileStore result = this;
  for (int i = 0, imax = path.segmentCount(); i < imax; i++)
    result = result.getChild(path.segment(i));
  return result;
}

/**
 * @see Object#hashCode()
 */
@Override
public int hashCode() {
  if (getType() == CONTAINER) {
    return getPath().segment(0).hashCode() + getType();
  }
  return getPath().hashCode() + getType();
}

private IResource internalGetResource(IPath fullPath, boolean container) {
  if (container) {
    if (fullPath.segmentCount() == 1)
      return ResourcesPlugin.getWorkspace().getRoot().getProject(fullPath.segment(0));
    return ResourcesPlugin.getWorkspace().getRoot().getFolder(fullPath);
  }
  return ResourcesPlugin.getWorkspace().getRoot().getFile(fullPath);
}

public String getComponentName(){
 IResource resource = getResourceFromInitialSelection();
 if (resource!=null) {
  IPath absolutePath = resource.getFullPath();
  if (absolutePath.isAbsolute()) {
   return absolutePath.segment(1);
  }
 }
 return null;
}

/**
 * @see org.eclipse.core.resources.IPathVariableManager#resolvePath(IPath)
 */
@Deprecated
@Override
public IPath resolvePath(IPath path) {
  if (path == null || path.segmentCount() == 0 || path.isAbsolute() || path.getDevice() != null)
    return path;
  IPath value = getValue(path.segment(0));
  return value == null ? path : value.append(path.removeFirstSegments(1));
}

/**
 * Returns the local file system location in which the meta data for the
 * resource with the given path is stored.
 */
public IPath locationFor(IPath resourcePath) {
  if (Path.ROOT.equals(resourcePath))
    return metaAreaLocation.append(F_ROOT);
  return projectMetaLocation.append(resourcePath.segment(0));
}

@Override
public long setLocalTimeStamp(long value) throws CoreException {
  //override to handle changing timestamp on project description file
  long result = super.setLocalTimeStamp(value);
  if (path.segmentCount() == 2 && path.segment(1).equals(IProjectDescription.DESCRIPTION_FILE_NAME)) {
    //handle concurrent project deletion
    ResourceInfo projectInfo = ((Project) getProject()).getResourceInfo(false, false);
    if (projectInfo != null)
      getLocalManager().updateLocalSync(projectInfo, result);
  }
  return result;
}

/**
 * @see IRuntimeClasspathEntry#getVariableName()
 */
@Override
public String getVariableName() {
  if (getType() == IRuntimeClasspathEntry.VARIABLE || getType() == IRuntimeClasspathEntry.CONTAINER) {
    return getPath().segment(0);
  }
  return null;
}

@Override
public IContainer getParent() {
  int segments = path.segmentCount();
  //zero and one segments handled by subclasses
  if (segments < 2)
    Assert.isLegal(false, path.toString());
  if (segments == 2)
    return workspace.getRoot().getProject(path.segment(0));
  return (IFolder) workspace.newResource(path.removeLastSegments(1), IResource.FOLDER);
}

private void updateDescription(IClasspathEntry containerEntry) {
  if (containerEntry == null || containerEntry.getPath().segmentCount() != 2) {
    setDescription(NewWizardMessages.UserLibraryWizardPage_description_new); 
  } else {
    setDescription(Messages.format(NewWizardMessages.UserLibraryWizardPage_description_edit, containerEntry.getPath().segment(1))); 
  }
}