Copying array

[Ruslan Ivanov]

hello , i am having problem with System.arraycopy() method i am getting NullPointerExceptions with it. What i want to do is just to copy a few elements from one array to another so this method seems convinient for me. I know i can do this by hand myself but if it's there for me why not use it.
Here is what i tried and failed.

String[] arr = new String[]
 {
           "1","2","3"
};
                String copy[];
System.arraycopy(arr,0,copy,0,2);
     

thanks.

[This message has been edited by Ruslan Ivanov (edited June 27, 2001).]

[Paul Stevens]

Change
String copy[];
to
String copy[] = new String[#];
where # is the size you want to make the second array and it will work.