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