Hi,

1. I think you can check for j != null to see if it has been instantiated.

2. In your example, j is only in scope within the constructor - it would
have to be a class variable I think:

public class foo
{
  String j;
  foo()
  {
  ...
  }
  void output()
  {
    if(j != null)
      dosomething();
  }
 ...
}

slan,
Mark

> -----Original Message-----
> From: Jacqueline Ng [SMTP:[EMAIL PROTECTED]]
> Sent: Tuesday, 4 January 2000 13:46
> To:   [EMAIL PROTECTED]
> Subject:      off-topic: object instantiation check
>
> Hi there,
>
> Is there a method in the Java API which can check to see if a class has an
> instantiated object, like in the code below
>
> public class foo
> {
>   foo()
>   {
>   String j;
>   ...
>   }
>   output()
>   {
>   if (j.objectexist() )
>     dosomething()
>   }
> }
>
> Thanx,
>
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