Compute the length of the longest diagonal (from a top corner to the opposite bottom corner) in a rectangular box 3 feet by 2 feet by 1 foot

Assume that the function call operator() is overloaded for data type String in the usual sense of selecting a substring from a larger string. For a String object string1 with the character string "ABCDEFGHI", what string does string1(4, 2) return?

a. "EF" b. "EFGHI" c. "CDEF" d. "CD"

double[][] empSales = new double[5][]; ? The above statement declares a(n) ____ array.

A. insertion B. sort C. jagged D. boolean