Java Reflection Generic Parameter getGenericType(Parameter param)

Description

Attempts to infer the type in the generic part of the declaration of the type

License

Apache License

Parameter

Parameter	Description
param	The parameter to inspect

Return

The Class in the generic portrion of the typ

Declaration

public static Type getGenericType(Parameter param) 

Method Source Code

//package com.java2s;
/*/*from w  w w .  j a v a2s  .c  o  m*/
 * Copyright 2002-2017 the original author or authors.
 * 
 * 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.Parameter;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;

public class Main {
    /**
     * Attempts to infer the type in the generic part of the declaration of the type
     * @param param The parameter to inspect
     * @return The Class in the generic portrion of the typ
     */
    public static Type getGenericType(Parameter param) {
        Type parameterizedType = param.getParameterizedType();
        if (parameterizedType instanceof ParameterizedType) {
            parameterizedType = ((ParameterizedType) parameterizedType).getRawType();
        }
        return parameterizedType;
    }
}

Related

1. getGenericParameterTypes(Type t)
2. getGenericParamType(Type type)
3. getGenericParamType(Type type)
4. getGenericParamType1(Type parameterizedType)
5. getGenericParamTypes(Type genericType)
6. getGenericTypeParameter(Type genericType)
7. getGenericTypes(ParameterizedType t)
8. getGenericTypes(Type[] genericParameterTypes)