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Declarations and Access Control - Programming

Q1:

Which two cause a compiler error?
  1. float[ ] f = new float(3);
  2. float f2[ ] = new float[ ];
  3. float[ ]f1 = new float[3];
  4. float f3[ ] = new float[3];
  5. float f5[ ] = {1.0f, 2.0f, 2.0f};

A 2, 4

B 3, 5

C 4, 5

D 1, 2

ANS:D - 1, 2

(1) causes two compiler errors ( '[' expected and illegal start of expression) because the wrong type of bracket is used, ( ) instead of [ ]. The following is the correct syntax: float[ ] f = new float[3]; (2) causes a compiler error ( '{' expected ) because the array constructor does not specify the number of elements in the array. The following is the correct syntax: float f2[ ] = new float[3]; (3), (4), and (5) compile without error.