1 /* 2 * Licensed to the Apache Software Foundation (ASF) under one or more 3 * contributor license agreements. See the NOTICE file distributed with 4 * this work for additional information regarding copyright ownership. 5 * The ASF licenses this file to You under the Apache License, Version 2.0 6 * (the "License"); you may not use this file except in compliance with 7 * the License. You may obtain a copy of the License at 8 * 9 * http://www.apache.org/licenses/LICENSE-2.0 10 * 11 * Unless required by applicable law or agreed to in writing, software 12 * distributed under the License is distributed on an "AS IS" BASIS, 13 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 14 * See the License for the specific language governing permissions and 15 * limitations under the License. 16 */ 17 package javax.servlet.jsp; 18 19 /** 20 * The JspEngineInfo is an abstract class that provides information on the 21 * current JSP engine. 22 */ 23 24 public abstract class JspEngineInfo { 25 26 /** 27 * Sole constructor. (For invocation by subclass constructors, 28 * typically implicit.) 29 */ 30 public JspEngineInfo() { 31 } 32 33 /** 34 * Return the version number of the JSP specification that is supported by 35 * this JSP engine. 36 * <p> 37 * Specification version numbers that consists of positive decimal integers 38 * separated by periods ".", for example, "2.0" or "1.2.3.4.5.6.7". 39 * This allows an extensible number to be used to 40 * represent major, minor, micro, etc versions. 41 * The version number must begin with a number. 42 * </p> 43 * 44 * @return the specification version, null is returned if it is not known 45 */ 46 47 public abstract String getSpecificationVersion(); 48 } 49