What is the return type of writeDouble (double d), a method of RandomAccessFile.

a) void b) int c) float d) double f) boolean g) file object h) none

The answer is h) none.

Explanation:

The RandomAccessFile. writeDouble (double d) method does not return any value, it converts the double d value into a long type and then, writes it into a file as an eight-byte quantity. So, the method does not return any value but creates a file object.