Tests whether the specified Throwable is a checked exception. - Java java.lang

Java examples for java.lang:Exception

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Description

Tests whether the specified Throwable is a checked exception.

Demo Code

/*/*from   ww w . j  a va 2s  . c  om*/
 * 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 com.java2s;

public class Main {
    /**
     * Tests whether the specified {@code Throwable} is a checked exception. If
     * not, an exception is thrown.
     *
     * @param ex the {@code Throwable} to check
     * @return a flag whether the passed in exception is a checked exception
     * @throws IllegalArgumentException if the {@code Throwable} is not a
     * checked exception
     */
    static Throwable checkedException(final Throwable ex) {
        if (ex != null && !(ex instanceof RuntimeException)
                && !(ex instanceof Error)) {
            return ex;
        } else {
            throw new IllegalArgumentException("Not a checked exception: "
                    + ex);
        }
    }
}

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