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/*
* ====================================================================
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements. See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership. The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License. You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied. See the License for the
* specific language governing permissions and limitations
* under the License.
* ====================================================================
*
* This software consists of voluntary contributions made by many
* individuals on behalf of the Apache Software Foundation. For more
* information on the Apache Software Foundation, please see
* .
*
*/
package org.apache.http.util;
import java.lang.reflect.Method;
/**
* The home for utility methods that handle various exception-related tasks.
*
*
* @since 4.0
*
* @deprecated (4.2) no longer used
*/
@Deprecated
public final class ExceptionUtils {
/** A reference to Throwable's initCause method, or null if it's not there in this JVM */
static private final Method INIT_CAUSE_METHOD = getInitCauseMethod();
/**
* Returns a {@code Method} allowing access to
* {@link Throwable#initCause(Throwable) initCause} method of {@link Throwable},
* or {@code null} if the method
* does not exist.
*
* @return A {@code Method} for {@code Throwable.initCause}, or
* {@code null} if unavailable.
*/
static private Method getInitCauseMethod() {
try {
final Class>[] paramsClasses = new Class[] { Throwable.class };
return Throwable.class.getMethod("initCause", paramsClasses);
} catch (final NoSuchMethodException e) {
return null;
}
}
/**
* If we're running on JDK 1.4 or later, initialize the cause for the given throwable.
*
* @param throwable The throwable.
* @param cause The cause of the throwable.
*/
public static void initCause(final Throwable throwable, final Throwable cause) {
if (INIT_CAUSE_METHOD != null) {
try {
INIT_CAUSE_METHOD.invoke(throwable, cause);
} catch (final Exception e) {
// Well, with no logging, the only option is to munch the exception
}
}
}
private ExceptionUtils() {
}
}
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