Scans the class for its setter methods. - Java Reflection

Java examples for Reflection:Setter

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Description

Scans the class for its setter methods.

Demo Code

/*// www . ja  v a2 s.  c  om
 * Copyright 2013 Balazs Berkes.
 *
 * 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 static java.lang.reflect.Modifier.isFinal;
import static java.lang.reflect.Modifier.isPublic;
import static java.lang.reflect.Modifier.isStatic;
import static org.mockannotations.utils.MockAnnotationValidationUtils.notNull;
import java.lang.reflect.Field;
import java.lang.reflect.Method;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Collections;
import java.util.List;

public class Main{
    public static void main(String[] argv) throws Exception{
        Class clazz = String.class;
        System.out.println(getAllSetters(clazz));
    }
    /**
     * Scans the class for its setter methods. Setter method must be public and non-static.
     * <p>
     * @param clazz the class to scan
     * @return {@code List<Method>} of the class which contains its setters
     */
    public static List<Method> getAllSetters(Class<?> clazz) {
        List<Method> setters = new ArrayList<Method>();

        for (Method method : clazz.getMethods()) {
            if (isSetter(method)) {
                setters.add(method);
            }
        }

        return setters;
    }
    private static boolean isSetter(Method m) {
        return isPublic(m.getModifiers()) && !isStatic(m.getModifiers())
                && hasOneParameter(m) && m.getName().startsWith("set");
    }
    private static boolean hasOneParameter(Method m) {
        return m.getParameterTypes().length == 1;
    }
}

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