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Which one creates an instance of an array?

  • A.int[ ] ia = new int[15];
  • B.float fa = new float[20];
  • C.char[ ] ca = "Some String";
  • D.int ia[ ] [ ] = { 4, 5, 6 }, { 1,2,3 };

Answer: A

Option A is correct. It uses correct array declaration and correct array construction.

Option B is incorrect. It generates a compiler error: incompatible types because the array variable declaration is not correct. The array construction expects a reference type, but it is supplied with a primitive type in the declaration.

Option C is incorrect. It generates a compiler error: incompatible types because a string literal is not assignable to a character type variable.

Option D is wrong, it generates a compiler error expected. The compiler thinks that you are trying to create two arrays because there are two array initialisers to the right of the equals, whereas your intention was to create a 3 x 3 two-dimensional array.

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