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

// $Id: 16271 2009-04-07 20:20:12Z hardy.ferentschik $
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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" );


7.4.1.Recursively get all fields for a hierarchical class tree
7.4.2.Reflect All
7.4.3.System class reflection
7.4.4.Get all declared fields from a class
7.4.5.Getting the Field Objects of a Class Object: By obtaining a list of all declared fields.
7.4.6.Getting the Field Objects of a Class Object: By obtaining a list of all public fields, both declared and inherited.
7.4.7.Getting the Field Objects of a Class Object: By obtaining a particular Field object.
7.4.8.Reflection, Introspection, and Naming
7.4.9.Get the name of a primitive type
7.4.10.Getting and Setting the Value of a Field (assumes that the field has the type int)
7.4.11.Retrieving a Predefined Color by Name
7.4.12.Get a variable value from the variable name
7.4.13.Return a list of all fields (whatever access status, and on whatever superclass they were defined) that can be found on this class.
7.4.14.Checks whether the specified class contains a field matching the specified name.
7.4.15.Return Retrurns the Type of the given Field or Method