Here you can find the source of openConnection(URL url)
public static URLConnection openConnection(URL url)
//package com.java2s; /*/*from ww w . ja v a 2 s .co m*/ * Copyright 2014-2015 the original author or authors. * * 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.IOException; import java.net.URL; import java.net.URLConnection; public class Main { public static URLConnection openConnection(URL url) { try { URLConnection connection = url.openConnection(); connection.setUseCaches(false); return connection; } catch (IOException e) { throw new IllegalStateException(e); } } }