Here you can find the source of getResourceAsStream(String filename)
public static InputStream getResourceAsStream(String filename)
//package com.java2s; /**// w w w .j av a2 s.c o m * Copyright (C) 2010 - 2014 VREM Software Development <VREMSoftwareDevelopment@gmail.com> * * 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.io.InputStream; public class Main { public static InputStream getResourceAsStream(String filename) { Thread currentThread = Thread.currentThread(); ClassLoader contextClassLoader = currentThread.getContextClassLoader(); return contextClassLoader.getResourceAsStream(filename); } }