Solution

HTML Interface to Applet

<APPLET CODEBASE="/applets/magelang/AWT-Training/classes/" CODE="RadioButtonsTest.class" WIDTH=380 HEIGHT=30 ALIGN=CENTER></APPLET>

Java Code

import java.awt.*;

public class RadioButtonsTest extends java.applet.Applet {

    public void init() {
        RadioButtons test = new RadioButtons();
        add(test);
    }
}

/**
 * Component containing a group of Checkboxes
 */
class RadioButtons extends FormElement {

    protected CheckboxGroup cbg;
    protected String        label = "Java for: ";

    public RadioButtons() {
        setLayout(new FlowLayout());
        add(new Label(label));
        cbg = new CheckboxGroup();
        add(new Checkbox("C++ Programmers", cbg, true));
        add(new Checkbox("Procedural Programmers", cbg, false));
    }

    /**
     * Return a text representation of this field.
     * This method is required by the FormElement interface.
     * @return String the selected text
     */
    public String getContents() {
        return label + "    " + cbg.getCurrent().getLabel();
    }
}