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Re: Calling class methods for annoymous class object?

Subject: Re: Calling class methods for annoymous class object?
From: Erik Mattheis <email@hidden>
Date: Sun, 16 Jul 2006 21:22:58 -0400
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You can get the specific method you want by passing the name and parameters to the getMethod method of the Class class. Then you can call the invoke method on the Method, passing in the instance of the object you want to invoke the method on and the arguments. For example:

Argument1 argument1 = new Argument1(); Argument2 argument2 = new Argument2(); Argument3 argument3 = new Argument3(); Class class = Class.forName("my.class.name"); Method method = class.getMethod("methodName", new Class[] {Argument1.class, Argument2.class, Argument3.class}); Object result = method.invoke(class, new Object[] {argument1, argument2, argument3});

- Erik Mattheis
  email@hidden


On Jul 16, 2006, at 8:52 PM, Saad Mahamood wrote:

Hello,

I'm writing a file parser that needs to the results of it parsing into
a particular class. In the name of good code re-use in the future I
didn't want this particular class name (AddressItem.class in this
case) to be hard coded. Instead I pass a String with the name of the
class to the constructor and do something of the following order:


String className = "AddressItem.class";
Class classObj = Class.forName(className);
Method[] mList = classObj.getMethods();
//Instantiation:
Object item = classObj.newInstance();

So I have new instance object and a Method ArrayList which contains
the names of the methods in the Class. But what I don't understand is
how to call a particular method using it's name?

Many Thanks,

Saad Mahamood.
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References:
	>Calling class methods for annoymous class object? (From: "Saad Mahamood" <email@hidden>)

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