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.base; 18 19 import com.google.common.annotations.GwtCompatible; 20 21 /** 22 * A class that can supply objects of a single type. Semantically, this could 23 * be a factory, generator, builder, closure, or something else entirely. No 24 * guarantees are implied by this interface. 25 * 26 * @author Harry Heymann 27 * @since 2010.01.04 <b>stable</b> (imported from Google Collections Library) 28 */ 29 @GwtCompatible 30 public interface Supplier<T> { 31 /** 32 * Retrieves an instance of the appropriate type. The returned object may or 33 * may not be a new instance, depending on the implementation. 34 * 35 * @return an instance of the appropriate type 36 */ get()37 public T get(); 38 } 39