Rich AJAX Platform

// Hello World in RAP
public Text txt;

public Display createUI() {
	Display display = new Display();
		
	Shell shell = new Shell(display);
	shell.setSize(320, 240);
		
	txt = new Text(shell, SWT.SIMPLE);
	txt.setLocation(shell.getClientArea().x + 10, shell.getClientArea().y + 40);
		
	Button button = new Button(shell, SWT.PUSH);
	button.setText("Hello World!");
	button.setBounds(shell.getClientArea().x + 10, shell.getClientArea().y 
                + 10, shell.getClientArea().width - 20, 20); 
	button.addSelectionListener(new SelectionListener(){
		public void widgetDefaultSelected(SelectionEvent e) {	
		}

		public void widgetSelected(SelectionEvent e) {
			txt.setText("Hello World!");
		}
	});
		
	shell.open();

	return display;
}