tate what is printed by the code and justify with step by step explanation of the execution of the code
tate what is printed by the code and justify with step by step explanation of the execution of the code
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question
complete the dry run , state what is printed by the code and justify with step by step explanation of the execution of the code
![(iii) Scanner scanner - new Scanner (System.in);
boolean done - false;
int num= -1;
while (!done) (
}
System.out.print("Enter a number: ");
String read - scanner.nextLine();
// isInteger returns true/false accordingly
if (isInteger (read)) {
}
num - Integer.parseInt (read);
done true;
// 12
// 13
// 14
// 15
// L6
// 17
// 18
// 19
System.out.println("Read: " + num);
// L10
Reminder: Integer.parseInt converts a numerical string to an int.
For this question, assume:
• is Integer is a method that returns true if the argument corresponds to an
integer, else false. E.g.,
isInteger ("42") returns true.
isInteger ("42a") returns false.
• The code is executed with the following keyboard input by the user:
42a [Enter] 42 [Enter]
where [Enter] means one press of the standard Return/Enter key.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F95b5a871-62fa-479b-89b7-393477eed51e%2F87b3e098-e2f9-4de7-813b-e09c4503232c%2Fr3tdzbh_processed.png&w=3840&q=75)
Transcribed Image Text:(iii) Scanner scanner - new Scanner (System.in);
boolean done - false;
int num= -1;
while (!done) (
}
System.out.print("Enter a number: ");
String read - scanner.nextLine();
// isInteger returns true/false accordingly
if (isInteger (read)) {
}
num - Integer.parseInt (read);
done true;
// 12
// 13
// 14
// 15
// L6
// 17
// 18
// 19
System.out.println("Read: " + num);
// L10
Reminder: Integer.parseInt converts a numerical string to an int.
For this question, assume:
• is Integer is a method that returns true if the argument corresponds to an
integer, else false. E.g.,
isInteger ("42") returns true.
isInteger ("42a") returns false.
• The code is executed with the following keyboard input by the user:
42a [Enter] 42 [Enter]
where [Enter] means one press of the standard Return/Enter key.
Transcribed Image Text:Complete the dry run table (you may not need all rows).
A column for scanner is omitted intentionally. You may start from line L2.
LINE done num
! done? read is Integer (read) ?
Printed
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