001: /*
002: * ============================================================================
003: * GNU Lesser General Public License
004: * ============================================================================
005: *
006: * JasperReports - Free Java report-generating library.
007: * Copyright (C) 2001-2006 JasperSoft Corporation http://www.jaspersoft.com
008: *
009: * This library is free software; you can redistribute it and/or
010: * modify it under the terms of the GNU Lesser General Public
011: * License as published by the Free Software Foundation; either
012: * version 2.1 of the License, or (at your option) any later version.
013: *
014: * This library is distributed in the hope that it will be useful,
015: * but WITHOUT ANY WARRANTY; without even the implied warranty of
016: * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
017: * Lesser General Public License for more details.
018: *
019: * You should have received a copy of the GNU Lesser General Public
020: * License along with this library; if not, write to the Free Software
021: * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
022: *
023: * JasperSoft Corporation
024: * 303 Second Street, Suite 450 North
025: * San Francisco, CA 94107
026: * http://www.jaspersoft.com
027: */
028: package net.sf.jasperreports.engine;
029:
030: import java.io.PrintStream;
031: import java.io.PrintWriter;
032:
033: /**
034: * General purpose JasperReports exception.
035: * @author Teodor Danciu (teodord@users.sourceforge.net)
036: * @version $Id: JRException.java 1454 2006-11-04 07:06:05Z teodord $
037: */
038: public class JRException extends Exception {
039:
040: /**
041: *
042: */
043: private static boolean isJre14orLater = true;
044:
045: static {
046: isJre14orLater = true;
047: try {
048: Exception.class.getMethod("getCause", (Class[]) null);
049: } catch (NoSuchMethodException e) {
050: isJre14orLater = false;
051: }
052: }
053:
054: /**
055: *
056: */
057: private Throwable nestedThrowable = null;
058:
059: /**
060: *
061: */
062: public JRException(String message) {
063: super (message);
064: }
065:
066: /**
067: *
068: */
069: public JRException(Throwable t) {
070: this (t.toString(), t);
071: }
072:
073: /**
074: *
075: */
076: public JRException(String message, Throwable t) {
077: super (message);
078:
079: nestedThrowable = t;
080: }
081:
082: /**
083: *
084: */
085: public Throwable getCause() {
086: return nestedThrowable;
087: }
088:
089: /**
090: *
091: */
092: public void printStackTrace() {
093: if (!isJre14orLater && nestedThrowable != null) {
094: nestedThrowable.printStackTrace();
095: System.err.println("\nNested by:");
096: }
097:
098: super .printStackTrace();
099: }
100:
101: /**
102: *
103: */
104: public void printStackTrace(PrintStream s) {
105: if (!isJre14orLater && nestedThrowable != null) {
106: nestedThrowable.printStackTrace(s);
107: s.println("\nNested by:");
108: }
109:
110: super .printStackTrace(s);
111: }
112:
113: /**
114: *
115: */
116: public void printStackTrace(PrintWriter s) {
117: if (!isJre14orLater && nestedThrowable != null) {
118: nestedThrowable.printStackTrace(s);
119: s.println("\nNested by:");
120: }
121:
122: super.printStackTrace(s);
123: }
124:
125: }
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