我想在Eclipse RCP中将标签的值从A类视图设置为B类视图

public class AView extends ViewPart {
    private Label label;
    private String labelValue;

    public void createPartControl(Composite parent) {
        label = new Label(parent, SWT.NONE);
        label.setText("Hello World");
        labelValue = label.getText();
    }

    public String getLabelValue() {
        return labelValue;
    }

    public void setLabelValue(String value) {
        labelValue = value;
        label.setText(value);
    }
}

public class BView extends ViewPart {
    private Label label;

    public void createPartControl(Composite parent) {
        label = new Label(parent, SWT.NONE);
    }

    public void setLabelValue(String value) {
        label.setText(value);
    }
}

IWorkbenchPage page = PlatformUI.getWorkbench().getActiveWorkbenchWindow().getActivePage();
BView bView = (BView) page.showView("com.example.BView");
bView.setLabelValue(aView.getLabelValue());