Here you can find the source of adjustWindowToMinimumSize(final Window window)
public static void adjustWindowToMinimumSize(final Window window)
//package com.java2s; /*/*ww w.jav a2 s . c o m*/ * Copyright 2000-2013 JetBrains s.r.o. * * 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 void adjustWindowToMinimumSize(final Window window) { if (window == null) return; final Dimension minSize = window.getMinimumSize(); final Dimension size = window.getSize(); final Dimension newSize = new Dimension(Math.max(size.width, minSize.width), Math.max(size.height, minSize.height)); if (!newSize.equals(size)) { //noinspection SSBasedInspection SwingUtilities.invokeLater(new Runnable() { @Override public void run() { if (window.isShowing()) { window.setSize(newSize); } } }); } } }