Here you can find the source of addSpacer(JPanel panel)
public static void addSpacer(JPanel panel)
//package com.java2s; /*/*ww w . j a v a 2 s .co m*/ * Copyright (C) 2011 Cozycode.net * * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at * * http://www.apache.org/licenses/LICENSE-2.0 * * Unless required by applicable law or agreed to in writing, software * distributed under the License is distributed on an "AS IS" BASIS, * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. * See the License for the specific language governing permissions and * limitations under the License. */ import java.awt.Dimension; import javax.swing.JPanel; public class Main { public static void addSpacer(JPanel panel) { JPanel filler = new JPanel(); filler.setOpaque(false); filler.setPreferredSize(new Dimension(0, 10)); panel.add(filler, "span"); } }