Determine whether the given method explicitly declares the given exception or one of its superclasses, which means that an exception of that type can be propagated as-is within a reflective invocation. - Android java.lang.reflect

Android examples for java.lang.reflect:Method

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Description

Determine whether the given method explicitly declares the given exception or one of its superclasses, which means that an exception of that type can be propagated as-is within a reflective invocation.

Demo Code

/*//www  .  ja va  2 s. c o m
 * Copyright 2002-2009 the original author or authors.
 *
 * Licensed 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.
 */
import java.lang.reflect.Constructor;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.List;

public class Main{
    /**
     * Determine whether the given method explicitly declares the given
     * exception or one of its superclasses, which means that an exception of
     * that type can be propagated as-is within a reflective invocation.
     * @param method the declaring method
     * @param exceptionType the exception to throw
     * @return <code>true</code> if the exception can be thrown as-is;
     * <code>false</code> if it needs to be wrapped
     */
    public static boolean declaresException(Method method,
            Class<?> exceptionType) {
        Assert.notNull(method, "Method must not be null");
        Class<?>[] declaredExceptions = method.getExceptionTypes();
        for (Class<?> declaredException : declaredExceptions) {
            if (declaredException.isAssignableFrom(exceptionType)) {
                return true;
            }
        }
        return false;
    }
}

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