import org.eclipse.swt.SWT;
import org.eclipse.swt.events.FocusEvent;
import org.eclipse.swt.events.FocusListener;
import org.eclipse.swt.graphics.Image;
import org.eclipse.swt.widgets.*;

public class TextFieldExample5 {    
    Display d;
    Shell s;
    TextFieldExample5()    {
        d = new Display();
        s = new Shell(d);
        s.setSize(250,250);
        s.setImage(new Image(d, "c:\\icons\\JavaCup.ico"));
        s.setText("A Text Field Example");
        final Text text1 = new Text(s, SWT.WRAP |SWT.BORDER);
        text1.setBounds(100,50,100,20);
        text1.setTextLimit(5);
        text1.setEchoChar('*');
        final Text text2 = new Text(s, SWT.SINGLE | SWT.BORDER);
        text2.setBounds(100,75,100,20);
        text2.setTextLimit(30);
                
        // add a focus listener
        FocusListener focusListener = new FocusListener() {
            public void focusGained(FocusEvent e) {                
            }
            public void focusLost(FocusEvent e) {
                Text t = (Text)e.widget;
                if(t==text2)
                {
                    if(t.getText().length() < 3)
                    {
                        t.setFocus();
                    }                    
                }                
            }
        };
        text1.addFocusListener(focusListener);
        text2.addFocusListener(focusListener);
        s.open();
        while(!s.isDisposed()){
            if(!d.readAndDispatch())
                d.sleep();
        }
        d.dispose();
    }
}