Suppose that we say: 

Integer [] myarray = new Integer[1000];
for (int i = 0; i < 1000; i++)
   myarray[i] = new Integer(i);
About how many bytes are used by (a) the variable myarray, (b) what it points to, and (c) the total storage allocated by this code?

  • A: 8000, 8000 and 16000
  • B: 8, 8000 and 24000
  • C: 8, 8000 and 16000
  • D: 1000, 8000 and 9000
  • E: 1000, 8000 and 25000

    Answer: B

    The variable myarray is a reference variable, so it has the pointer size, 8 bytes.

    The array is an array of pointers, so it is about 8000 bytes.

    The pointers point to individual Integer objects, each of size 16 bytes, so these occupy 16000 bytes.

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