Hi alexander,
--- Alexander Popov <s_popov@prosyst.bg> wrote:
> Hashtable.get() constantly throws NPE. I use current
> CVS (trunk, not the
> 1.0.7 brunch)... The platform is linux/x86.
>
> Here is an example code thet demonstrates that:
>
>
> import java.util.Hashtable;
> import java.lang.System;
>
> public class hashGet {
>
> public static Hashtable props;
> public static Object SIZE = new String("404444");
>
> public static void get(){
>
> System.out.println("Get 1 : " + SIZE );
> Object b = props.get(SIZE);
> System.out.println("Get 2");
> }
>
> public static void main(String[] args) {
>
> System.out.println("Main 1");
> try {
> get();
> }catch (Exception e){
> System.out.println("Hashtable.get throws : "
> + e);
> e.printStackTrace();
> }
> System.out.println("Main 2");
>
> }
>
> }
Actually, you don't even call Hashtable.get in this
example since props is not initialized. Since it is
not initialized, it defaults to null, and you get a
null pointer exception when you try to call get() on
it.
problem solved ;)
cheers,
dalibor topic
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