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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  }