A_in.java

package grant;

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

public class FormatterProblem {

public static void main(String args[]) {
new FormatterProblem().buildGUI();
}

private void buildGUI() {
Shell shell = new Shell();
final Display d = shell.getDisplay();
shell.setBounds(100, 100, 300, 100);
shell.setLayout(new GridLayout());
Composite buttonGroup = new Composite(shell, SWT.BORDER);
buttonGroup.setLayout(new GridLayout());
buttonGroup.setLayoutData(new GridData());
final Button addButton = new Button(buttonGroup, SWT.PUSH);
addButton.setLayoutData(new GridData());
SelectionAdapter buttonSelection = new SelectionAdapter() {
//....
};
addButton.addSelectionListener(buttonSelection);

shell.open();
		
while (!shell.isDisposed()) {
if (!d.readAndDispatch())
d.sleep();
}
}
}