Java Reflection Method Setter Get getSetterType(Method method)

Description

Returns the class of the argument to the setter.

License

Apache License

Declaration

public static Class<?> getSetterType(Method method) 

Method Source Code

//package com.java2s;
/*//from  w  ww. j a v  a 2s.co  m
 * Copyright The Codehaus Foundation.
 *
 * 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.Method;
import java.lang.reflect.Modifier;

public class Main {
    /**
     * Returns the class of the argument to the setter.
     *
     * Will throw an RuntimeException if the method isn't a setter.
     */
    public static Class<?> getSetterType(Method method) {
        if (!isSetter(method)) {
            throw new RuntimeException("The method " + method.getDeclaringClass().getName() + "." + method.getName()
                    + " is not a setter.");
        }

        return method.getParameterTypes()[0];
    }

    public static boolean isSetter(Method method) {
        return method.getReturnType().equals(Void.TYPE) && // FIXME: needed /required?
                !Modifier.isStatic(method.getModifiers()) && method.getParameterTypes().length == 1;
    }
}

Related

1. getSetters(Class clazz)
2. getSetters(Class klass)
3. getSetters(Object obj)
4. getSettersForType(Class clazz, String typeName)
5. getSetterShorthandName(Method method)