1 /* 2 * Copyright (c) 2017, 2017, Oracle and/or its affiliates. All rights reserved. 3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER. 4 * 5 * This code is free software; you can redistribute it and/or modify it 6 * under the terms of the GNU General Public License version 2 only, as 7 * published by the Free Software Foundation. 8 * 9 * This code is distributed in the hope that it will be useful, but WITHOUT 10 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or 11 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License 12 * version 2 for more details (a copy is included in the LICENSE file that 13 * accompanied this code). 14 * 15 * You should have received a copy of the GNU General Public License version 16 * 2 along with this work; if not, write to the Free Software Foundation, 17 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 18 * 19 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA 20 * or visit www.oracle.com if you need additional information or have any 21 * questions. 22 */ 23 24 25 package jdk.internal.vm.compiler.collections; 26 27 /** 28 * Cursor to iterate over a map without changing its contents. 29 * 30 * @since 1.0 31 */ 32 public interface UnmodifiableMapCursor<K, V> { 33 /** 34 * Advances to the next entry. 35 * 36 * @return {@code true} if a next entry exists, {@code false} if there is no next entry. 37 * @since 1.0 38 */ 39 boolean advance(); 40 41 /** 42 * The key of the current entry. 43 * 44 * @since 1.0 45 */ 46 K getKey(); 47 48 /** 49 * The value of the current entry. 50 * 51 * @since 1.0 52 */ 53 V getValue(); 54 }