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1   /**
2    *
3    * Copyright 2003-2004 The Apache Software Foundation
4    *
5    *  Licensed under the Apache License, Version 2.0 (the "License");
6    *  you may not use this file except in compliance with the License.
7    *  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  
18  //
19  // This source code implements specifications defined by the Java
20  // Community Process. In order to remain compliant with the specification
21  // DO NOT add / change / or delete method signatures!
22  //
23  
24  package javax.servlet.jsp;
25  
26  /**
27   * The JspEngineInfo is an abstract class that provides information on the
28   * current JSP engine.
29   */
30  
31  public abstract class JspEngineInfo {
32  
33      /**
34       * Sole constructor. (For invocation by subclass constructors, 
35       * typically implicit.)
36       */
37      public JspEngineInfo() {
38      }
39      
40      /**
41       * Return the version number of the JSP specification that is supported by
42       * this JSP engine.
43       * <p>
44       * Specification version numbers that consists of positive decimal integers
45       * separated by periods ".", for example, "2.0" or "1.2.3.4.5.6.7".
46       * This allows an extensible number to be used to
47       * represent major, minor, micro, etc versions.
48       * The version number must begin with a number.
49       * </p>
50       *
51       * @return the specification version, null is returned if it is not known
52       */
53  
54      public abstract String getSpecificationVersion();
55  }