NullAttributeException


1   /*
2    * Copyright 1999-2004 The Apache Software Foundation.
3    * 
4    * Licensed under the Apache License, Version 2.0 (the "License");
5    * you may not use this file except in compliance with the License.
6    * You may obtain a copy of the License at
7    * 
8    *      http://www.apache.org/licenses/LICENSE-2.0
9    * 
10   * Unless required by applicable law or agreed to in writing, software
11   * distributed under the License is distributed on an "AS IS" BASIS,
12   * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13   * See the License for the specific language governing permissions and
14   * limitations under the License.
15   */ 
16  
17  package org.apache.taglibs.standard.examples.taglib;
18  
19  import javax.servlet.jsp.JspTagException  ;
20  
21  /**
22   * <p>NullAttributeException is a JspTagException that will be thrown
23   * by the JSTL RI handlers when a tag attribute illegally evaluates
24   * to 'null'.</p>
25   *
26   * @author Shawn Bayern
27   */
28  
29  public class NullAttributeException extends JspTagException   {
30  
31      /**
32       * Constructs a ExpressionException with appropriate information.
33       *
34       * @param tag The name of the tag in which the error occurred.
35       * @param att The attribute value for which the error occurred.
36       */
37      public NullAttributeException(String   tag, String   att) {
38      super("The '" + att + "' attribute illegally evaluated to 'null' "
39          + "in &lt;" + tag + "&gt;.");
40      }
41  }
42  
43

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