What is the difference between these blocks of code?

Question

So, I looked through this block of code several times in the book I am reading:

int[][] someArray = new int[size][];
for(int i=0; i<size; i++)
   someArray[i] = new int[size];

I see no difference between this and the following declaration:

int[][] someArray = new int[size][size];

Did I miss something? Is there a reason why I should use the long code block above?

Thank,

Answer 1

You can create ragged or jagged arrays with the first construct

Answer 2

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Answer 3

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Answer 4

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:

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