The Tor Browser / file comparison
comparison: mobile/android/thirdparty/ch/boye/httpclientandroidlib/util/ExceptionUtils.java
mobile/android/thirdparty/ch/boye/httpclientandroidlib/util/ExceptionUtils.java
- branch
- TOR_BUG_9701
- changeset 15
- b8a032363ba2
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| -1:000000000000 | 0:9e290b6e9a95 |
|---|---|
| 1 /* | |
| 2 * ==================================================================== | |
| 3 * Licensed to the Apache Software Foundation (ASF) under one | |
| 4 * or more contributor license agreements. See the NOTICE file | |
| 5 * distributed with this work for additional information | |
| 6 * regarding copyright ownership. The ASF licenses this file | |
| 7 * to you under the Apache License, Version 2.0 (the | |
| 8 * "License"); you may not use this file except in compliance | |
| 9 * with the License. You may obtain a copy of the License at | |
| 10 * | |
| 11 * http://www.apache.org/licenses/LICENSE-2.0 | |
| 12 * | |
| 13 * Unless required by applicable law or agreed to in writing, | |
| 14 * software distributed under the License is distributed on an | |
| 15 * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY | |
| 16 * KIND, either express or implied. See the License for the | |
| 17 * specific language governing permissions and limitations | |
| 18 * under the License. | |
| 19 * ==================================================================== | |
| 20 * | |
| 21 * This software consists of voluntary contributions made by many | |
| 22 * individuals on behalf of the Apache Software Foundation. For more | |
| 23 * information on the Apache Software Foundation, please see | |
| 24 * <http://www.apache.org/>. | |
| 25 * | |
| 26 */ | |
| 27 package ch.boye.httpclientandroidlib.util; | |
| 28 | |
| 29 import java.lang.reflect.Method; | |
| 30 | |
| 31 /** | |
| 32 * The home for utility methods that handle various exception-related tasks. | |
| 33 * | |
| 34 * | |
| 35 * @since 4.0 | |
| 36 */ | |
| 37 public final class ExceptionUtils { | |
| 38 | |
| 39 /** A reference to Throwable's initCause method, or null if it's not there in this JVM */ | |
| 40 static private final Method INIT_CAUSE_METHOD = getInitCauseMethod(); | |
| 41 | |
| 42 /** | |
| 43 * Returns a <code>Method<code> allowing access to | |
| 44 * {@link Throwable#initCause(Throwable) initCause} method of {@link Throwable}, | |
| 45 * or <code>null</code> if the method | |
| 46 * does not exist. | |
| 47 * | |
| 48 * @return A <code>Method<code> for <code>Throwable.initCause</code>, or | |
| 49 * <code>null</code> if unavailable. | |
| 50 */ | |
| 51 static private Method getInitCauseMethod() { | |
| 52 try { | |
| 53 Class[] paramsClasses = new Class[] { Throwable.class }; | |
| 54 return Throwable.class.getMethod("initCause", paramsClasses); | |
| 55 } catch (NoSuchMethodException e) { | |
| 56 return null; | |
| 57 } | |
| 58 } | |
| 59 | |
| 60 /** | |
| 61 * If we're running on JDK 1.4 or later, initialize the cause for the given throwable. | |
| 62 * | |
| 63 * @param throwable The throwable. | |
| 64 * @param cause The cause of the throwable. | |
| 65 */ | |
| 66 public static void initCause(Throwable throwable, Throwable cause) { | |
| 67 if (INIT_CAUSE_METHOD != null) { | |
| 68 try { | |
| 69 INIT_CAUSE_METHOD.invoke(throwable, new Object[] { cause }); | |
| 70 } catch (Exception e) { | |
| 71 // Well, with no logging, the only option is to munch the exception | |
| 72 } | |
| 73 } | |
| 74 } | |
| 75 | |
| 76 private ExceptionUtils() { | |
| 77 } | |
| 78 | |
| 79 } |
