1 /*
2  * Copyright (c) 2003, 2020, 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     @java.io.Serial
48     private static final long serialVersionUID = -5101214195716534496L;
49 
50     /**
51      * The type name.
52      */
53     private String typeName;
54 
55     /**
56      * Constructs a {@code TypeNotPresentException} for the named type
57      * with the specified cause.
58      *
59      * @param typeName the fully qualified name of the unavailable type
60      * @param cause the exception that was thrown when the system attempted to
61      *    load the named type, or {@code null} if unavailable or inapplicable
62      */
TypeNotPresentException(String typeName, Throwable cause)63     public TypeNotPresentException(String typeName, Throwable cause) {
64         super("Type " + typeName + " not present", cause);
65         this.typeName = typeName;
66     }
67 
68     /**
69      * Returns the fully qualified name of the unavailable type.
70      *
71      * @return the fully qualified name of the unavailable type
72      */
typeName()73     public String typeName() { return typeName;}
74 }
75