What is the right way to update a table view in a Part in a Eclipse RCP project?

Say I have a ItemListPart class in my RCP project, and there is a table to be displayed in it as following:

import java.util.List;

import javax.annotation.PostConstruct;

import org.eclipse.e4.ui.di.Focus;
import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.GridData;
import org.eclipse.swt.layout.GridLayout;
import org.eclipse.swt.widgets.Composite;
import org.eclipse.swt.widgets.Table;
import org.eclipse.swt.widgets.TableColumn;
import org.eclipse.swt.widgets.TableItem;

public class ItemListPart {
    private Table table;

    @PostConstruct 
    public void createControls(Composite parent){
      //I wish the ItemList could be changed from outside the ItemListPart class.
      List<Item> ItemList = getItemList();

      parent.setLayout(new GridLayout(2, false));

      table = new Table(parent, SWT.MULTI | SWT.BORDER | SWT.FULL_SELECTION);
      table.setLinesVisible(true);
      table.setHeaderVisible(true);
      GridData data = new GridData(SWT.FILL, SWT.FILL, true, true);
      data.heightHint = 200;
      table.setLayoutData(data);

      String[] titles = { "Item Name", "Description"};
      for (int i = 0; i < titles.length; i++) {
          TableColumn column = new TableColumn(table, SWT.NONE);
          column.setText(titles[i]);
          table.getColumn(i).pack();
      }


      for(Item it:ItemList){
          TableItem item = new TableItem(table, SWT.NONE);
          item.setText(0, it.getName());
          item.setText(1, it.getDesc());
      }

      for (int i=0; i<titles.length; i++) {
          table.getColumn (i).pack ();
      }
    }

    @Focus
    public void onFocus() {
        table.setFocus();
    }
}

Here the ItemList<Item> is a List which I wish could be changed from outside the ItemListPart class, and whenever the data in ItemList<Item> changed, the table view could be auto refreshed according to the updated data. What is the right way to achieve this goal? Thanks.

Copyright Notice：Content Author:「kenshinji」，Reproduced under the CC 4.0 BY-SA copyright license with a link to the original source and this disclaimer.
Link to original article：https://stackoverflow.com/questions/40481424/what-is-the-right-way-to-update-a-table-view-in-a-part-in-a-eclipse-rcp-project