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array problem

 
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What is wrong with my code why am I getting warning..

 
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You cannot just put a statement like my2Darr[0]= new int[3]; in a class. You have to put it in a method, constructor, or block of code. To see this, the easiest thing to do is put the statement in a code block as in:
 
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or make the array variable as static and move the erroneous code to main method.
 
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