Trace the following Java code snippets: Assume the user will enter: 12 10 2015 3

Question

Trace the following Java code snippets: Assume the user will enter: 12 10 2015 3 Scanner input = new Scanner (System.in); String str = " "; System.out.println ("Enter a day"); int day = input.nextInt (); str = str + day+ ":"; System.out.println ("Enter a month"); int month = input.nextInt (); str = str + month+ ":"; System.out.println ("Enter a year"); int year = input.nextInt (); str = str + year; System.out.println ("Enter the format"); int f = input.nextInt (); f = f % 3; if (f == 1) {str = str.replace (':', '/');} else if (f == 2) {str = str.replace (':', '-');} System.out.println ("Your date is" +str);

Explanation / Answer

Line 2 sets str = ""

Line 3 asks for day from user

Line 4 stores 12 in 'day' variable

Line 5 sets str = "12:"

Line 6 asks for month from user

Line 7 stores 10 in month variable

Line 8 sets str = "12:10:"

Line 9 asks for year from yser

Line 10 stores 2015 in year variable

Line 11 sets set = "12:10:2015"

Line 12 asks for format

Line 13 sets f = 3

Line 14 sets f = 0

Line 15-19 are not run, as f == 0

Line 20 prints "Your date is 12:10:2015"

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