[Bluej-discuss] BlueJ 2.1.2 Compiler warnings

[Todd O'Bryan]

You're using a collection class without declaring what kind of stuff  
it holds. In other words,

ArrayList l = new ArrayList();

should become, in Java 1.5.0,

ArrayList<String> l = new ArrayList<String>();

with String, of course, replaced by whatever type the ArrayList is  
going to hold. The last preference in the Miscellaneous tab lets you  
turn off those warnings if you don't want to specify the contents of  
your collections.

Todd

On Mar 6, 2006, at 5:41 AM, Luis Moreira wrote:

> Hi Guys,
>
> I have just upgraded to BlueJ 2.1.2 and every time I compile I get  
> the message: “Note: filename.java uses unchecked or unsafe  
> operations.”
>
>                                                                        
>                                              “ Note: Recompile with  
> –Xlint unchecked for details.”
>
>
> Do you know what is this all about?
>
>
> Best regards
>
>                         Luis
>
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