Java/Reflection/Return Type
Return Retrurns the Type of the given Field or Method
<source lang="java">
// $Id: ReflectionHelper.java 16271 2009-04-07 20:20:12Z hardy.ferentschik $ /*
- JBoss, Home of Professional Open Source
- Copyright 2008, Red Hat Middleware LLC, and individual contributors
- 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 TheMember
instance for which to retrieve the type. * * @return Retrurns theType
of the givenField
orMethod
. * * @throws IllegalArgumentException in casemember
is not aField
orMethod
. */ 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" ); }
}
</source>
Returns the type of the field of return type of a method.
<source lang="java">
// $Id: ReflectionHelper.java 16271 2009-04-07 20:20:12Z hardy.ferentschik $ /*
- JBoss, Home of Professional Open Source
- Copyright 2008, Red Hat Middleware LLC, and individual contributors
- 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 {
/** * Returns the type of the field of return type of a method. * * @param member the member for which to get the type. * * @return Returns the type of the field of return type of a method. */ public static Class<?> getType(Member member) { Class<?> type = null; if ( member instanceof Field ) { type = ( ( Field ) member ).getType(); } if ( member instanceof Method ) { type = ( ( Method ) member ).getReturnType(); } return type; }
}
</source>