1 /* 2 * Copyright (C) 2008 The Android Open Source Project 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.android.internal.util; 18 19 /** 20 * A Predicate can determine a true or false value for any input of its 21 * parameterized type. For example, a {@code RegexPredicate} might implement 22 * {@code Predicate<String>}, and return true for any String that matches its 23 * given regular expression. 24 * <p/> 25 * <p/> 26 * Implementors of Predicate which may cause side effects upon evaluation are 27 * strongly encouraged to state this fact clearly in their API documentation. 28 */ 29 public interface Predicate<T> { 30 apply(T t)31 boolean apply(T t); 32 } 33