Return Retrurns the Type of the given Field or Method : Return Type « Reflection « Java






Return Retrurns the Type of the given Field or Method

  
// $Id: ReflectionHelper.java 16271 2009-04-07 20:20:12Z hardy.ferentschik $
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* by the @authors tag. See the copyright.txt in the distribution for a
* full listing of individual contributors.
*
* 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.beans.Introspector;
import java.lang.annotation.Annotation;
import java.lang.reflect.AccessibleObject;
import java.lang.reflect.Field;
import java.lang.reflect.InvocationTargetException;
import java.lang.reflect.Member;
import java.lang.reflect.Method;
import java.lang.reflect.Modifier;
import java.lang.reflect.ParameterizedType;
import java.lang.reflect.Type;
import java.lang.reflect.WildcardType;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.Iterator;
import java.util.List;
import java.util.Map;


/**
 * Some reflection utility methods.
 *
 * @author Hardy Ferentschik
 */
public class ReflectionHelper {

  /**
   * @param member The <code>Member</code> instance for which to retrieve the type.
   *
   * @return Retrurns the <code>Type</code> of the given <code>Field</code> or <code>Method</code>.
   *
   * @throws IllegalArgumentException in case <code>member</code> is not a <code>Field</code> or <code>Method</code>.
   */
  public static Type typeOf(Member member) {
    if ( member instanceof Field ) {
      return ( ( Field ) member ).getGenericType();
    }
    if ( member instanceof Method ) {
      return ( ( Method ) member ).getGenericReturnType();
    }
    throw new IllegalArgumentException( "Member " + member + " is neither a field nor a method" );
  }

}

   
    
  








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