NullPointerException on ArrayList in java

Question

I am writing a simple java code but it gave me error of NullPointerException. My code is

String s="google";
ArrayList ss[]=new ArrayList[2];
ss[0].add(s);
System.out.println(ss[0]);

I see the error, but you should post the stack trace. Also you should look up a null pointer exception and try to find it for your self: http://stackoverflow.com/questions/218384/what-is-a-null-pointer-exception-and-how-do-i-fix-it — Forseth11, May 25 '15 at 19:12

score 0 · Answer 1 · answered May 25 '15 at 19:11

0

When you create the array, you do not create each element of the array. This will work:

ss[0] = new ArrayList();
ss[0].add(s);

answered May 25 '15 at 19:11

Eric Leibenguth

1 Answers1