call method With Default return value - Android java.lang.reflect

Android examples for java.lang.reflect:Method Invoke

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Description

call method With Default return value

Demo Code

/*//from   w w  w.j a v a2  s  .  c o m
 * Copyright 2012 Google Inc.
 *
 * 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.
 */
//package com.java2s;
import java.lang.reflect.InvocationTargetException;

public class Main {
    public static <E> E callWithDefault(Object target, String methodName,
            E defaultValue) {
        try {
            //noinspection unchecked
            return (E) target.getClass()
                    .getMethod(methodName, (Class[]) null).invoke(target);
        } catch (NoSuchMethodException ignored) {
        } catch (IllegalAccessException ignored) {
        } catch (InvocationTargetException ignored) {
        }

        return defaultValue;
    }
}

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