Java Reflection Method Setter Get getSetter(Class clazz, String name)

Description

Get a setter with a given name from a class.

License

Apache License

Parameter

Parameter	Description
clazz	the class enclosing the setter.
name	the name of the setter to look for.

Return

a Method object, or null if the class has no setter with the specfied name.

Declaration

public static Method getSetter(Class clazz, String name) 

Method Source Code

//package com.java2s;
/*/*w w w . ja  v  a 2 s . c  om*/
 * JPPF.
 * Copyright (C) 2005-2010 JPPF Team.
 * http://www.jppf.org
 *
 * 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.*;

public class Main {
    /**
     * Get a setter with a given name from a class.
     * @param clazz the class enclosing the setter.
     * @param name the name of the setter to look for.
     * @return a <code>Method</code> object, or null if the class has no setter with the specfied name.
     */
    public static Method getSetter(Class clazz, String name) {
        Method[] methods = clazz.getMethods();
        Method setter = null;
        for (int i = 0; i < methods.length; i++) {
            if (isSetter(methods[i]) && name.equals(methods[i].getName())) {
                setter = methods[i];
                break;
            }
        }
        return setter;
    }

    /**
     * Determines whether a method is a setter (mutator), according to Sun's naming conventions.
     * @param meth the method to analyse.
     * @return true if the method is a setter, false otherwise.
     */
    public static boolean isSetter(Method meth) {
        Class type = meth.getReturnType();
        if (!Void.TYPE.equals(type))
            return false;
        if (!meth.getName().startsWith("set"))
            return false;
        Class[] paramTypes = meth.getParameterTypes();
        if ((paramTypes == null) || (paramTypes.length != 1))
            return false;
        return true;
    }
}

Related

1. getSetter(A instance, String strAttributeName, Class clazz)
2. getSetter(Class _class, String fieldName)
3. getSetter(Class clazz, Field field)
4. getSetter(Class clazz, Field field)
5. getSetter(Class clazz, String property, Class type)
6. getSetter(Class cls, final String fieldName)