Java Reflection Generic Type from Class getGenericType(Class propertyType)

Description

get Generic Type

License

Apache License

Declaration

public static Class getGenericType(Class propertyType) 

Method Source Code

//package com.java2s;
/* Copyright (C) 2011 SpringSource
 *
 * 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.//from  www.  jav a  2  s .  co  m
 */

import java.lang.reflect.Type;
import java.lang.reflect.TypeVariable;

public class Main {
    public static Class getGenericType(Class propertyType) {
        Class genericType = null;
        TypeVariable[] typeParameters = propertyType.getTypeParameters();
        if (typeParameters != null && typeParameters.length > 0) {
            Type[] bounds = typeParameters[0].getBounds();
            if (bounds != null && bounds.length > 0
                    && (bounds[0] instanceof Class)) {
                genericType = (Class) bounds[0];
            }
        }
        return genericType;
    }
}

Related

1. getGenericSuperclassActualTypes(Collection types, Class aClass)
2. getGenericSuperType(Class clz, int index)
3. getGenericSuperType(Class subclass, Class classWithParameter)
4. getGenericSuperType(Class class1, Class class2)
5. getGenericType(Class clazz, int index)
6. getGenericType(Class clazz)
7. getGenericType(Class clazz)
8. getGenericType(Class clazz, int index)
9. getGenericType(Class target)