Here you can find the source of close(InputStream is)
public static void close(InputStream is)
//package com.java2s; /*// ww w. j av a2 s . c om * 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.io.InputStream; import java.util.jar.JarFile; public class Main { public static void close(InputStream is) { if (is == null) { return; } try { is.close(); } catch (IOException e) { throw new IllegalStateException(e); } } public static void close(JarFile jarFile) { try { jarFile.close(); } catch (IOException e) { throw new IllegalStateException(e); } } }