Here you can find the source of getTabsHeight()
public static int getTabsHeight()
//package com.java2s; /*/* w w w .j a v a2 s . co m*/ * Copyright 2000-2011 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.*; public class Main { public static final int TAB_VERTICAL_PADDING = 2; public static final int TABS_BORDER = 1; public static int getTabsHeight() { return new JLabel("XXX").getPreferredSize().height + 2 + TAB_VERTICAL_PADDING * 2 + TABS_BORDER * 2; } }