Here you can find the source of createBox(int orientation, JComponent... components)
public static JComponent createBox(int orientation, JComponent... components)
//package com.java2s; /*//from w w w. ja v a 2s . c o m * "BSLib", Brainstorm Library. * Copyright (C) 2017 by Sergey V. Zhdanovskih. * * This program is free software: you can redistribute it and/or modify * it under the terms of the GNU General Public License as published by * the Free Software Foundation, either version 3 of the License, or * (at your option) any later version. * * This program is distributed in the hope that it will be useful, * but WITHOUT ANY WARRANTY; without even the implied warranty of * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the * GNU General Public License for more details. * * You should have received a copy of the GNU General Public License * along with this program. If not, see <http://www.gnu.org/licenses/>. */ import javax.swing.*; public class Main { public static JComponent createBox(int orientation, JComponent... components) { // hgap, vgap of Flow influences to padding of container Box box; if (orientation == 0) { box = Box.createHorizontalBox(); } else { box = Box.createVerticalBox(); } int num = components.length; for (int i = 0; i < num; i++) { JComponent comp = components[i]; if (comp == null) { box.add(Box.createHorizontalGlue()); } else { box.add(comp); } if (i < num - 1) { box.add(Box.createHorizontalStrut(10)); } } return box; } }