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[java] Classes, reflection, etc...

Started by smitty1276 Jun 24, 2004 at 1:16 AM 4 replies 1k views

Original Post

smitty1276

117

smitty1276

Jun 24, 2004 at 1:16 AM

How do I accomplish the following...


Vector theVector = new Vector();
Object obj = theVector;
    
Class theClass = Class.forName("java.util.Vector");

//the condition in the if statement is what I'm looking for
if (obj is an instance of the same class as theClass)
  //do something

I figured it would be best just to keep the post short. If anyone needs me to elaborate, I'd be happy to do so. Thanks.

smitty1276

Author

117

smitty1276

Jun 24, 2004 at 1:26 AM

Sorry, but I somehow completely missed the isInstance() method.

area51

Jun 24, 2004 at 7:38 AM

You can use this also :

if (obj instanceof theClass)   // do something

smitty1276

Author

117

smitty1276

Jun 24, 2004 at 2:42 PM

The instanceof operator doesn't work with the Class object, or at least it didn't when I tried it.

That's why they provide the isInstance() method for it.

ibawt

Jun 25, 2004 at 11:59 AM

Quote:
Original post by smitty1276
The instanceof operator doesn't work with the Class object, or at least it didn't when I tried it.

That's why they provide the isInstance() method for it.

That's because a Class isn't an instance.

MadLep

Jun 30, 2004 at 6:49 PM

Try:

if (obj.getClass().equals(theClass))

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