1 /* 2 * Copyright (C) 2007 Google Inc. 3 * 4 * Licensed under the Apache License, Version 2.0 (the "License"); 5 * you may not use this file except in compliance with the License. 6 * You may obtain a copy of the License at 7 * 8 * http://www.apache.org/licenses/LICENSE-2.0 9 * 10 * Unless required by applicable law or agreed to in writing, software 11 * distributed under the License is distributed on an "AS IS" BASIS, 12 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 13 * See the License for the specific language governing permissions and 14 * limitations under the License. 15 */ 16 17 package com.google.common.io; 18 19 /** 20 * This package contains utility methods and classes for working with Java I/O, 21 * for example input streams, output streams, readers, writers, and files. 22 * 23 * <p>Many of the methods are based on the 24 * {@link com.google.common.io.InputSupplier} and 25 * {@link com.google.common.io.OutputSupplier} interfaces. They are used as 26 * factories for I/O objects that might throw {@link java.io.IOException} when 27 * being created. The advantage of using a factory is that the helper methods in 28 * this package can take care of closing the resource properly, even if an 29 * exception is thrown. The {@link com.google.common.io.ByteStreams}, 30 * {@link com.google.common.io.CharStreams}, and 31 * {@link com.google.common.io.Files} classes all have static helper methods to 32 * create new factories and to work with them. 33 * 34 * <p>The methods of this package always throw {@link NullPointerException} in 35 * response to a null value being supplied for any parameter that is not 36 * explicitly annotated as being {@link javax.annotation.Nullable}. 37 * 38 * @author Chris Nokleberg 39 */ 40