Java by API/org.eclipse.jface.dialogs/ErrorDialog

ErrorDialog: openError(Shell shell, String arg1, String arg2, IStatus arg3)

import org.eclipse.core.runtime.*;
import org.eclipse.jface.dialogs.ErrorDialog;
import org.eclipse.jface.window.ApplicationWindow;
import org.eclipse.swt.SWT;
import org.eclipse.swt.events.*;
import org.eclipse.swt.layout.*;
import org.eclipse.swt.widgets.*;
public class MainClass extends ApplicationWindow {
  public MainClass() {
    super(null);
  }
  public void run() {
    setBlockOnOpen(true);
    open();
    Display.getCurrent().dispose();
  }
  protected void configureShell(Shell shell) {
    super.configureShell(shell);
    shell.setText("Show Error");
    shell.setSize(400, 400);
  }
  protected Control createContents(Composite parent) {
    Composite composite = new Composite(parent, SWT.NONE);
    composite.setLayout(new GridLayout(1, false));
    final Text text = new Text(composite, SWT.MULTI | SWT.BORDER | SWT.V_SCROLL);
    text.setLayoutData(new GridData(GridData.FILL_BOTH));
    Button show = new Button(composite, SWT.PUSH);
    show.setText("Show Error");
    show.addSelectionListener(new SelectionAdapter() {
      public void widgetSelected(SelectionEvent event) {
        Status status = new Status(IStatus.ERROR, "My Plug-in ID", 0,
            "Status Error Message", null);
        ErrorDialog.openError(Display.getCurrent().getActiveShell(),
            "JFace Error", text.getText(), status);
      }
    });
    return composite;
  }
  public static void main(String[] args) {
    new MainClass().run();
  }
}