private void moveRowImpl(int sourceIndex, int targetIndex) {
    if (sourceIndex < 0) {
      sourceIndex = 0;
    }
    if (sourceIndex >= getRowCount()) {
      sourceIndex = getRowCount() - 1;
    }
    if (targetIndex < 0) {
      targetIndex = 0;
    }
    if (targetIndex >= getRowCount()) {
      targetIndex = getRowCount() - 1;
    }
    if (targetIndex != sourceIndex) {
      synchronized (m_cachedRowsLock) {
        m_cachedRows = null;
      }
      ITableRow row = m_rows.remove(sourceIndex);
      m_rows.add(targetIndex, row);
      // update row indexes
      int min = Math.min(sourceIndex, targetIndex);
      int max = Math.max(sourceIndex, targetIndex);
      ITableRow[] changedRows = new ITableRow[max - min + 1];
      for (int i = min; i <= max; i++) {
        changedRows[i - min] = getRow(i);
        ((InternalTableRow) changedRows[i - min]).setRowIndex(i);
      }
      fireRowOrderChanged();
      // rebuild selection
      selectRows(getSelectedRows(), false);
    }
  }

  @Override
  public void moveRow(int sourceIndex, int targetIndex) {
    moveRowImpl(sourceIndex, targetIndex);
  }

@Order(10.0)
public class MyTableField extends AbstractTableField<MyTableField.Table> {

  @Override
  protected String getConfiguredLabel() {
    return TEXTS.get("MyTable");
  }

  @Override
  protected int getConfiguredGridW() {
    return 2;
  }

  @Override
  protected int getConfiguredGridH() {
    return 5;
  }

  @Order(10.0)
  public class Table extends AbstractExtensibleTable {

    /**
     * @return the TextColumn
     */
    public TextColumn getTextColumn() {
      return getColumnSet().getColumnByClass(TextColumn.class);
    }

    @Order(10.0)
    public class TextColumn extends AbstractStringColumn {

      @Override
      protected String getConfiguredHeaderText() {
        return TEXTS.get("Text");
      }
    }
  }
}

Table table = getMyTableField().getTable();

ITableRow r;
r = table.addRow(table.createRow());
table.getTextColumn().setValue(r, "Lorem");

r = table.addRow(table.createRow());
table.getTextColumn().setValue(r, "Ipsum");

r = table.addRow(table.createRow());
table.getTextColumn().setValue(r, "Dolor");

Table table = getMyTableField().getTable();
table.moveRow(0, 1);