Question

Select all statements or expressions that would allow a Java program to display the length of array Infant_Age, as defined as follows: int Infant_Age[] = {1, 2, 3, 4}

(Check all that apply.)

a. System.out.print (Infant_Age.length)

b. len = Infant_Age.length; System.out.print(len);

c. for (int i=0; i<4; i++) {System.out.print (i)}

d. System.out.print (Infant_Age[4])

e. System.out.print (length.Infant_Age)

Answer 1

Option a, b prints the length of infant_age array
Explanation:
Option a: displays the length of the array (infant_age retrieves the length of array)
option b: infant_age retrieves the length of array and stored in variable len, but this piiece of code works only when len is initialized to int len,; int len = Infant_Age.length; System.out.print(len);
option c: This prints the numbers 1 to 4 each in a new line
option d: This instruction prints the 5th element in array (if any) else it throws error.
option e: This statement is invalid