001 /* 002 * Licensed to the Apache Software Foundation (ASF) under one 003 * or more contributor license agreements. See the NOTICE file 004 * distributed with this work for additional information 005 * regarding copyright ownership. The ASF licenses this file 006 * to you under the Apache License, Version 2.0 (the 007 * "License"); you may not use this file except in compliance 008 * with the License. You may obtain a copy of the License at 009 * 010 * http://www.apache.org/licenses/LICENSE-2.0 011 * 012 * Unless required by applicable law or agreed to in writing, 013 * software distributed under the License is distributed on an 014 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY 015 * KIND, either express or implied. See the License for the 016 * specific language governing permissions and limitations 017 * under the License. 018 */ 019 020 // 021 // This source code implements specifications defined by the Java 022 // Community Process. In order to remain compliant with the specification 023 // DO NOT add / change / or delete method signatures! 024 // 025 026 package javax.servlet.jsp; 027 028 /** 029 * The JspEngineInfo is an abstract class that provides information on the 030 * current JSP engine. 031 */ 032 033 public abstract class JspEngineInfo { 034 035 /** 036 * Sole constructor. (For invocation by subclass constructors, 037 * typically implicit.) 038 */ 039 public JspEngineInfo() { 040 } 041 042 /** 043 * Return the version number of the JSP specification that is supported by 044 * this JSP engine. 045 * <p> 046 * Specification version numbers that consists of positive decimal integers 047 * separated by periods ".", for example, "2.0" or "1.2.3.4.5.6.7". 048 * This allows an extensible number to be used to 049 * represent major, minor, micro, etc versions. 050 * The version number must begin with a number. 051 * </p> 052 * 053 * @return the specification version, null is returned if it is not known 054 */ 055 056 public abstract String getSpecificationVersion(); 057 }