import org.eclipse.swt.*;
import org.eclipse.swt.widgets.*;
import org.eclipse.swt.events.*;
import org.eclipse.swt.layout.*;

public class SwtApplication {
Display disp;
shell sh;
Button btn;

public SwtApplication(){
disp = new Display ();
sh = new Shell(disp);
sh.setText("記念すべき第二アプリケｰション");
sh.setSize(300,150);
sh.setLayout(new Fillayout());

btn = new Button(sh, SWT.NULL);
btn.setText("Click here.");
btn.addSelectionListener(new SelectionAdapter(){
public void widgetSelected(SelectionEvent ev) {
MessageBox msg = new MessageBox(sh, SWT.OK);
msg.setText("メッセージ");
msg.setMessage("congraturations again !");
msg.open();
}
});