Re: Instance java.lang.Object.getClass() of Class Java Method on OO Tumia

From:
Paka Small <paka-en@tumia.org>
Newsgroups:
comp.lang.java.programmer
Date:
Mon, 6 Feb 2012 22:20:14 -0800 (PST)
Message-ID:
<fbc0216d-93ba-4c43-b559-22f9a99535ac@b23g2000yqn.googlegroups.com>
On 7 feb, 02:13, Lew <lewbl...@gmail.com> wrote:

Paka Small wrote:

Example code proving beyond any doubt that a method is an instance of
the class java.lang.reflect.Method in Java:


No, it doesn't. Again, the Java Language Specification defines methods an=

d

objects, and they are not the same thing. I have pointed you to it.

  public final void setValue(BaseObject baseObject, Object value) {
    java.lang.reflect.Method setMethod = null;


'setMethod' is a variable, not a method.

    try {
      setMethod =
baseObjectClass.getJavaClass().getMethod(this.getSetMethodName(), new
Class[]{this.type});
      } catch (NoSuchMethodException ex) {

Logger.getLogger(BaseObjectAttribute.class.getName()).log(Level.SEVERE,
null, ex);
      } catch (SecurityException ex) {

Logger.getLogger(BaseObjectAttribute.class.getName()).log(Level.SEVERE,
null, ex);
      }
    try {
      setMethod.invoke(baseObject, new Object[]{value});


'invoke()' is a method.

    } catch (IllegalAccessException ex) {

Logger.getLogger(BaseObjectAttribute.class.getName()).log(Level.SEVERE,
null, ex);
    } catch (IllegalArgumentException ex) {

Logger.getLogger(BaseObjectAttribute.class.getName()).log(Level.SEVERE,
null, ex);
    } catch (InvocationTargetException ex) {

Logger.getLogger(BaseObjectAttribute.class.getName()).log(Level.SEVERE,
null, ex);
    }
  }


How exactly do you imagine that this proves a method is a class instance?

All your code proves is that there exists a class instance that can descr=

ibe

and invoke a particular method. There is nothing in your code that shows,=

 let

alone proves "beyond any doubt", that a method is an instance of a class.=

 It

couldn't, because a Java method is not an instance of a class.

--
Lew


Hi,

Clearly the code shows that setMethod is an instance of the class
java.lang.reflect.Method and that a method of a class is actually
assigned to setMethod in this statement:
setMethod =
baseObjectClass.getJavaClass().getMethod(this.getSetMethodName(), new
Class[]{this.type});

Kind regards, Paka

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