1 /*
   2  * Copyright (c) 2003, 2008, Oracle and/or its affiliates. All rights reserved.
   3  * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
   4  *
   5  * This code is free software; you can redistribute it and/or modify it
   6  * under the terms of the GNU General Public License version 2 only, as
   7  * published by the Free Software Foundation.  Oracle designates this
   8  * particular file as subject to the "Classpath" exception as provided
   9  * by Oracle in the LICENSE file that accompanied this code.
  10  *
  11  * This code is distributed in the hope that it will be useful, but WITHOUT
  12  * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
  13  * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
  14  * version 2 for more details (a copy is included in the LICENSE file that
  15  * accompanied this code).
  16  *
  17  * You should have received a copy of the GNU General Public License version
  18  * 2 along with this work; if not, write to the Free Software Foundation,
  19  * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
  20  *
  21  * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
  22  * or visit www.oracle.com if you need additional information or have any
  23  * questions.
  24  */
  25 
  26 package java.lang;
  27 
  28 /**
  29  * Thrown when an application tries to access a type using a string
  30  * representing the type's name, but no definition for the type with
  31  * the specified name can be found.   This exception differs from
  32  * {@link ClassNotFoundException} in that {@code ClassNotFoundException} is a
  33  * checked exception, whereas this exception is unchecked.
  34  *
  35  * <p>Note that this exception may be used when undefined type variables
  36  * are accessed as well as when types (e.g., classes, interfaces or
  37  * annotation types) are loaded.
  38  * In particular, this exception can be thrown by the {@linkplain
  39  * java.lang.reflect.AnnotatedElement API used to read annotations
  40  * reflectively}.
  41  *
  42  * @author  Josh Bloch
  43  * @see     java.lang.reflect.AnnotatedElement
  44  * @since 1.5
  45  */
  46 public class TypeNotPresentException extends RuntimeException {
  47     private static final long serialVersionUID = -5101214195716534496L;
  48 
  49     private String typeName;
  50 
  51     /**
  52      * Constructs a {@code TypeNotPresentException} for the named type
  53      * with the specified cause.
  54      *
  55      * @param typeName the fully qualified name of the unavailable type
  56      * @param cause the exception that was thrown when the system attempted to
  57      *    load the named type, or {@code null} if unavailable or inapplicable
  58      */
  59     public TypeNotPresentException(String typeName, Throwable cause) {
  60         super("Type " + typeName + " not present", cause);
  61         this.typeName = typeName;
  62     }
  63 
  64     /**
  65      * Returns the fully qualified name of the unavailable type.
  66      *
  67      * @return the fully qualified name of the unavailable type
  68      */
  69     public String typeName() { return typeName;}
  70 }