Question

What (if any) type of error occurs with the following code if the user input is ABC?

Scanner in = new Scanner(System.in);
System.out.println(Enter a number: );
String str = ();
int count = Integer.parseInt(str);
System.out.println(Input is + count).
A) Compile-time error
B) Executes as written.
C) Run-time error
D) Overflow error

Answer 1

A run-time error occurs when 'ABC' is input because the Integer.parseInt() method cannot convert non-numeric strings into integers, leading to a NumberFormatException.

Step-by-step explanation:

If the user inputs 'ABC' when prompted by the code snippet, a run-time error occurs. This is because the Integer.parseInt(str) method is being called with a String that cannot be parsed into an integer. The Integer.parseInt() function requires a string that contains only numeric characters that can be converted into an integer value.

However, because 'ABC' does not represent a numeric value, the method throws a NumberFormatException, which is a type of run-time error. The correct option from the given choices is C) Run-time error.