Java tutorial
//package com.java2s; import java.util.Arrays; import javax.swing.AbstractButton; import javax.swing.ButtonGroup; public class Main { /** * Creates a {@link ButtonGroup} and adds all the given buttons to it. * @param buttons the buttons to group * @return the created ButtonGroup */ public static ButtonGroup group(AbstractButton... buttons) { final ButtonGroup group = new ButtonGroup(); Arrays.stream(buttons).forEach(group::add); return group; } }