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Why doesn't this code run?

843793May 13 2003 — edited May 14 2003

I'm just experimenting with the JSR14 generics release, but am having problems. The code below is abstracted from my application. It compiles ok, but gives a runtime error:

import java.util.*;
class A {
public static void main (String argv[]) {
ArrayList<Boolean> B = new ArrayList<Boolean>(10);
Iterator<Boolean> i = B.iterator();
boolean b = (i.next()).booleanValue();
}
}

The error is:

Exception in thread "main" java.lang.VerifyError: (class: A, method: main signature: ([Ljava/lang/String;)V) Incompatible object argument for function call

If I remove the generics code, and add the required cast, the error disappears. Anyone know what is causing this?

thanks,

Gareth

darrylburke

1. Use code tags to post codes -- [code]CODE[/code] will display as

CODE

Or click the CODE button and paste your code between the {code} tags that appear.

2. Use a DocumentFilter, not a KeyListener.

db

User_64CKJ

BilgehanP wrote:
..I have a JTextField and it should accept only integers.

It 'sounds' as though this might be better done using a JSpinner with a NumberModel, than beeping at the end user every time they hit a key that does not fit (yuck!).

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Locked on Jun 11 2003

Added on May 13 2003

#generics

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Java APIs

Why doesn't this code run?

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