Here you can find the source of setImageIcon(JLabel label, URL url)
public static void setImageIcon(JLabel label, URL url)
//package com.java2s; /* /*from www . ja v a 2s .c o m*/ * Copyright 2015 Patrik Karlsson. * * 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.net.URL; import javax.swing.AbstractButton; import javax.swing.ImageIcon; import javax.swing.JLabel; public class Main { public static void setImageIcon(AbstractButton abstractButton, URL url) { if (url != null) { abstractButton.setIcon(new ImageIcon(url)); } else { abstractButton.setIcon(null); } } public static void setImageIcon(JLabel label, URL url) { if (url != null) { label.setIcon(new ImageIcon(url)); } else { label.setIcon(null); } } }