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java/javax/servlet/jsp/JspEngineInfo.java

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+/*
+* Licensed to the Apache Software Foundation (ASF) under one or more
+* contributor license agreements.  See the NOTICE file distributed with
+* this work for additional information regarding copyright ownership.
+* The ASF licenses this file to You under the Apache License, Version 2.0
+* (the "License"); you may not use this file except in compliance with
+* the License.  You may obtain a copy of the License at
+*
+*     http://www.apache.org/licenses/LICENSE-2.0
+*
+* Unless required by applicable law or agreed to in writing, software
+* distributed under the License is distributed on an "AS IS" BASIS,
+* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+* See the License for the specific language governing permissions and
+* limitations under the License.
+*/
+package javax.servlet.jsp;
+
+/**
+ * The JspEngineInfo is an abstract class that provides information on the
+ * current JSP engine.
+ */
+
+public abstract class JspEngineInfo {
+
+    /**
+     * Sole constructor. (For invocation by subclass constructors,
+     * typically implicit.)
+     */
+    public JspEngineInfo() {
+        // NOOP by default
+    }
+
+    /**
+     * Return the version number of the JSP specification that is supported by
+     * this JSP engine.
+     * <p>
+     * Specification version numbers that consists of positive decimal integers
+     * separated by periods ".", for example, "2.0" or "1.2.3.4.5.6.7".
+     * This allows an extensible number to be used to
+     * represent major, minor, micro, etc versions.
+     * The version number must begin with a number.
+     * </p>
+     *
+     * @return the specification version, null is returned if it is not known
+     */
+
+    public abstract String getSpecificationVersion();
+}