Here you can find the source of equalizeButtons(JButton... buttons)
public static void equalizeButtons(JButton... buttons)
//package com.java2s; /*// w w w . ja v a 2 s. co m * Copyright 2012 Sebastian Koppehel * * 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.JButton; public class Main { public static void equalizeButtons(JButton... buttons) { int maxWidth = 0; int maxHeight = 0; for (JButton button : buttons) { Dimension d = button.getPreferredSize(); maxWidth = Math.max(d.width, maxWidth); maxHeight = Math.max(d.height, maxHeight); } Dimension d = new Dimension(maxWidth, maxHeight); for (JButton button : buttons) { button.setMinimumSize(d); button.setPreferredSize(d); button.setMaximumSize(d); } } }