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Java > Open Source Codes > net > sf > jasperreports > engine > JRException


1 /*
2  * ============================================================================
3  * GNU Lesser General Public License
4  * ============================================================================
5  *
6  * JasperReports - Free Java report-generating library.
7  * Copyright (C) 2001-2006 JasperSoft Corporation http://www.jaspersoft.com
8  *
9  * This library is free software; you can redistribute it and/or
10  * modify it under the terms of the GNU Lesser General Public
11  * License as published by the Free Software Foundation; either
12  * version 2.1 of the License, or (at your option) any later version.
13  *
14  * This library is distributed in the hope that it will be useful,
15  * but WITHOUT ANY WARRANTY; without even the implied warranty of
16  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17  * Lesser General Public License for more details.
18  *
19  * You should have received a copy of the GNU Lesser General Public
20  * License along with this library; if not, write to the Free Software
21  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
22  *
23  * JasperSoft Corporation
24  * 303 Second Street, Suite 450 North
25  * San Francisco, CA 94107
26  * http://www.jaspersoft.com
27  */
28 package net.sf.jasperreports.engine;
29
30 import java.io.PrintStream JavaDoc;
31 import java.io.PrintWriter JavaDoc;
32
33
34 /**
35  * General purpose JasperReports exception.
36  * @author Teodor Danciu (teodord@users.sourceforge.net)
37  * @version $Id: JRException.java 1454 2006-11-04 09:06:05 +0200 (Sat, 04 Nov 2006) teodord $
38  */
39 public class JRException extends Exception JavaDoc
40 {
41
42     /**
43      *
44      */
45     private static boolean isJre14orLater = true;
46     
47     static
48     {
49         isJre14orLater = true;
50         try
51         {
52             Exception JavaDoc.class.getMethod("getCause", (Class JavaDoc[])null);
53         }
54         catch (NoSuchMethodException JavaDoc e)
55         {
56             isJre14orLater = false;
57         }
58     }
59
60     /**
61      *
62      */
63     private Throwable JavaDoc nestedThrowable = null;
64
65
66     /**
67      *
68      */
69     public JRException(String JavaDoc message)
70     {
71         super(message);
72     }
73
74
75     /**
76      *
77      */
78     public JRException(Throwable JavaDoc t)
79     {
80         this(t.toString(), t);
81     }
82
83
84     /**
85      *
86      */
87     public JRException(String JavaDoc message, Throwable JavaDoc t)
88     {
89         super(message);
90         
91         nestedThrowable = t;
92     }
93
94
95     /**
96      *
97      */
98     public Throwable JavaDoc getCause()
99     {
100         return nestedThrowable;
101     }
102
103
104     /**
105      *
106      */
107     public void printStackTrace()
108     {
109         if (!isJre14orLater && nestedThrowable != null)
110         {
111             nestedThrowable.printStackTrace();
112             System.err.println("\nNested by:");
113         }
114
115         super.printStackTrace();
116     }
117     
118
119     /**
120      *
121      */
122     public void printStackTrace(PrintStream JavaDoc s)
123     {
124         if (!isJre14orLater && nestedThrowable != null)
125         {
126             nestedThrowable.printStackTrace(s);
127             s.println("\nNested by:");
128         }
129
130         super.printStackTrace(s);
131     }
132     
133
134     /**
135      *
136      */
137     public void printStackTrace(PrintWriter JavaDoc s)
138     {
139         if (!isJre14orLater && nestedThrowable != null)
140         {
141             nestedThrowable.printStackTrace(s);
142             s.println("\nNested by:");
143         }
144
145         super.printStackTrace(s);
146     }
147     
148     
149 }
150
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