Java Reflection Method Setter Get getSetterMethodFromGetter(final Method getter)

Description

Return a setter Method for a given getter Method .

License

Apache License

Parameter

Parameter	Description
getter	The getter Method

Exception

Parameter	Description
NoSuchMethodException	If the setter method does not exist
SecurityException	If the setter method is not accessible

Return

The setter Method for the given getter Method.

Declaration

public static Method getSetterMethodFromGetter(final Method getter)
        throws SecurityException, NoSuchMethodException 

Method Source Code

//package com.java2s;
/*//from w  ww .ja  v  a  2  s.c o  m
 * Copyright 2008 Werner Guttmann, Peter Schmidt
 *
 * 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;

public class Main {
    /**
     * Return a setter {@link Method} for a given getter {@link Method}.
     * 
     * @param getter
     *            The getter {@link Method}
     * @return The setter Method for the given getter Method.
     * @throws NoSuchMethodException
     *             If the setter method does not exist
     * @throws SecurityException
     *             If the setter method is not accessible
     */
    public static Method getSetterMethodFromGetter(final Method getter)
            throws SecurityException, NoSuchMethodException {
        if (!isGetter(getter)) {
            throw new IllegalArgumentException("Method is not a getter method!");
        }

        String[] prefixes = { "get", "is" };

        String setterName;
        for (String prefix : prefixes) {
            if (getter.getName().startsWith(prefix)) {
                String name = getter.getName().substring(prefix.length());
                setterName = "set" + name;
                return getter.getDeclaringClass().getDeclaredMethod(setterName, getter.getReturnType());
            }
        }
        throw new IllegalArgumentException("Method name does not start with 'get' or 'is'!");
    }

    /**
     * Convenience method to check whether a {@link Method} is a getter method,
     * i.e. starts with "get" or "is".
     * 
     * @param method
     *            the {@link Method} to check.
     * @return true if the methods name starts with "get" or "is" (Java Beans
     *         convention).
     */
    public static boolean isGetter(final Method method) {
        if (method.getName().startsWith("get") || method.getName().startsWith("is")) {
            return true;
        }
        return false;
    }
}

Related

1. getSetterMethod(String getterName, Class returnType, Class containingClass)
2. getSetterMethod(String setterName, Object bean, Class setterParamType)
3. getSetterMethodByFieldName(String fieldName, Field field)
4. getSetterMethodByProperty(String propertyName, Class beanClass, Class setterParamType)
5. getSetterMethodForClass(Class cls, String beanName, Class type)
6. getSetterMethods(Class clazz)
7. getSetterMethods(Class clazz)
8. getSetterMethods(Class clazz)
9. getSetterMethods(Class objectType)