Two dimensional Array List won't compile outside eclipse

Question

I've been having a thousand issues with my code and am not sure what is wrong with it. This code runs perfectly in the eclipse IDE, but when I take it out to try in Ready to program java it prompts me with a compilation error from the following code:

ArrayList<ArrayList<Integer>> tempLayout = new ArrayList<>();

and

ArrayList<Integer> row = new ArrayList<>();

Give the errors:

Invalid assignment operator

!= expected instead of this token

misplaced construct(s)

Invalid name

Invalid assignment operator

!= expected instead of this token

misplaced construct(s)

Invalid name

My environment is Windows 7 running JRE 6 (I must use jre6, I cannot update it)

What is the issue in my code? What should I change so it works?

"I will set up a bounty for 300 rep on my other stackoverflow account and offer it up to you." --> I'm not too sure this is allowed by SO rules, for one. — awksp, Jun 17 '14 at 20:50
no, I've already been redirected to that question. It's not helped at all — user2966992, Jun 17 '14 at 20:51
Have you noticed that that question says that the diamond operator is only Java 7 and up? — awksp, Jun 17 '14 at 20:52

score 2 · Answer 1 · answered Jun 17 '14 at 20:51

2

With JDK 6, you haven't the nice syntaxic sugar ArrayList<>();.
JDK 7 has it.

You have to explicitly declare as following, if you use JDK 6:

ArrayList<Integer> row = new ArrayList<Integer>();

answered Jun 17 '14 at 20:51

Mik378

21,881
15
82
180

is this two dimensional? Also, That only answers half the question. I am also still receiving errors – user2966992 Jun 17 '14 at 20:52
1

No, my example is not dealing with multidimensional, but it is the same rule. – Mik378 Jun 17 '14 at 20:53
What is your current error? – Mik378 Jun 17 '14 at 20:54
`Invalid assignment operator` :( Right on the `<` – user2966992 Jun 17 '14 at 20:54
Post your current code at the bottom of your question or in a Gist. – Mik378 Jun 17 '14 at 20:55
http://pastebin.com/WzVMNdCe – user2966992 Jun 17 '14 at 20:56
`ArrayList> tempLayout = new ArrayList>();` – Mik378 Jun 17 '14 at 20:57
That's the same code bob0themighty posted. It's the same result – user2966992 Jun 17 '14 at 21:00
Why don't I see it in your gist? – Mik378 Jun 17 '14 at 21:03
I added it in after I posted the pastebin – user2966992 Jun 17 '14 at 21:04
So please update it, a typo is often made.. – Mik378 Jun 17 '14 at 21:06
http://pastebin.com/JhrhWV7v I included the full code just in case you find it useful – user2966992 Jun 17 '14 at 21:09
Your code compiles with me. Try to clean your whole project and rebuild it – Mik378 Jun 17 '14 at 21:17

score 0 · Answer 2 · answered Jun 17 '14 at 20:52

0

Try including the same type indicator in your new ArrayLists like so:

ArrayList<ArrayList<Integer>> tempLayout = new ArrayList<ArrayList<Integer>>(); 
ArrayList<Integer> row = new ArrayList<Integer>();

answered Jun 17 '14 at 20:52

bob0the0mighty

782
11
28

I understand what you are doing, I tested it and I still get very similar errors: `Invalid assignment operator` etc.... They are on the `< = < (` areas.... – user2966992 Jun 17 '14 at 20:58

Two dimensional Array List won't compile outside eclipse

2 Answers2