Here you can find the source of adjustSize(JButton button)
public static void adjustSize(JButton button)
//package com.java2s; /*//ww w . jav a 2 s . com * Copyright (c) 2008-2016 Haulmont. * * 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 javax.swing.*; import java.awt.*; public class Main { public static final int BUTTON_HEIGHT = 30; public static final int FIELD_HEIGHT = 28; public static void adjustSize(JButton button) { button.setPreferredSize(new Dimension(0, BUTTON_HEIGHT)); button.setMaximumSize(new Dimension(Integer.MAX_VALUE, BUTTON_HEIGHT)); } public static void adjustSize(JComboBox comboBox) { comboBox.setPreferredSize(new Dimension(0, FIELD_HEIGHT)); } public static void adjustSize(JTextField textField) { textField.setPreferredSize(new Dimension(0, FIELD_HEIGHT)); } }