Start line:  
End line:  

Snippet Preview

Snippet HTML Code

Stack Overflow Questions
 /*
  * 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.
 */
package org.apache.tomcat.util;
Utilities for handling Throwables and Exceptions.
public class ExceptionUtils {

    
Checks whether the supplied Throwable is one that needs to be rethrown and swallows all others.

Parameters:
t the Throwable to check
    public static void handleThrowable(Throwable t) {
        if (t instanceof ThreadDeath) {
            throw (ThreadDeatht;
        }
        if (t instanceof VirtualMachineError) {
            throw (VirtualMachineErrort;
        }
        // All other instances of Throwable will be silently swallowed
    }

    
Checks whether the supplied Throwable is an instance of InvocationTargetException and returns the throwable that is wrapped by it, if there is any.

Parameters:
t the Throwable to check
Returns:
t or t.getCause()
    public static Throwable unwrapInvocationTargetException(Throwable t) {
        if (t instanceof InvocationTargetException && t.getCause() != null) {
            return t.getCause();
        }
        return t;
    }
New to GrepCode? Check out our FAQ X