import org.eclipse.swt.SWT;
import org.eclipse.swt.layout.FormLayout;
import org.eclipse.swt.widgets.Button;
import org.eclipse.swt.widgets.Display;
import org.eclipse.swt.widgets.Shell;
public class MainClass {
public static void main(String[] a) {
Display display = new Display();
Shell shell = new Shell(display);
FormLayout layout = new FormLayout();
layout.marginHeight = 5;
layout.marginWidth = 10;
shell.setLayout(layout);
new Button(shell, SWT.PUSH).setText("Button");
shell.pack();
shell.open();
while (!shell.isDisposed()) {
if (!display.readAndDispatch()) {
display.sleep();
}
}
display.dispose();
}
}