Attempt to find a getter method for the given bean property. - Java Reflection

Java examples for Reflection:Getter

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Description

Attempt to find a getter method for the given bean property.

Demo Code

/*/* ww w  . j  a  v  a  2  s.  c o m*/
 *  Copyright 2010 Visural.
 * 
 *  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.
 *  under the License.
 */
//package com.java2s;
import java.lang.reflect.Method;

public class Main {
    public static void main(String[] argv) throws Exception {
        Class beanType = String.class;
        String propertyName = "java2s.com";
        System.out.println(findGetter(beanType, propertyName));
    }

    /**
     * Attempt to find a getter method for the given bean property. Returns
     * null if the property can not be resolved.
     * @param beanType
     * @param propertyName
     * @return
     */
    public static Method findGetter(Class beanType, String propertyName) {
        String getterName = "get"
                + propertyName.toUpperCase().substring(0, 1)
                + propertyName.substring(1);
        Method result = findMethod(beanType, getterName);
        if (result == null) {
            getterName = "is" + propertyName.toUpperCase().substring(0, 1)
                    + propertyName.substring(1);
            result = findMethod(beanType, getterName);
        }
        return result;
    }

    private static Method findMethod(Class beanType, String name,
            Class... params) {
        try {
            Method method = beanType.getMethod(name, params);
            return method;
        } catch (NoSuchMethodException ex) {
            return null;
        } catch (SecurityException ex) {
            throw new IllegalStateException(
                    "Reflection failed due to lack of privileges.", ex);
        }
    }
}

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