如何从类B执行类A的run方法

public class AplotPdfPrintLocal extends ApplicationWindow {
private String userSelectedFile;

public AplotPdfPrintLocal(String pdfFilePath) {
   super(null);
   this.userSelectedFile = pdfFilePath;
}

public void run() {
   setBlockOnOpen(true);
   open();
   Display.getCurrent().dispose();
}

etc........
public class AplotPdfPrintLocal extends Applica