Here you can find the source of makePaddedPanel(JComponent aComponent, Insets aInsets)
private static JPanel makePaddedPanel(JComponent aComponent, Insets aInsets)
//package com.java2s; /*/*from w w w . j av a2 s.com*/ * 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 javax.swing.border.Border; import java.awt.*; public class Main { private static final Insets paddingInsideDialog = new Insets(5, 5, 5, 5); private static JPanel makePaddedPanel(JComponent aComponent, Insets aInsets) { return wrapWithBorder(aComponent, BorderFactory.createEmptyBorder(aInsets.top, aInsets.left, aInsets.bottom, aInsets.right)); } private static JPanel makePaddedPanel(JComponent aComponent, boolean aTop, boolean aLeft, boolean aBottom, boolean aRight) { return wrapWithBorder(aComponent, BorderFactory.createEmptyBorder(aTop ? paddingInsideDialog.top : 0, aLeft ? paddingInsideDialog.left : 0, aBottom ? paddingInsideDialog.bottom : 0, aRight ? paddingInsideDialog.right : 0)); } private static JPanel wrapWithBorder(JComponent aPanel, Border aBorder) { JPanel wrapper = new JPanel(new BorderLayout()); wrapper.add(aPanel, BorderLayout.CENTER); wrapper.setBorder(aBorder); return wrapper; } }