Computer Networking: A Top-Down Approach (7th Edition)
7th Edition
ISBN: 9780133594140
Author: James Kurose, Keith Ross
Publisher: PEARSON
expand_more
expand_more
format_list_bulleted
Related questions
Question
java
![### Question 29
Choose the missing code for lines 2, 9, and 17 in the following program to generate a random number in the range of 10 and the number that the user inputs through the keyboard.
#### Code Snippet:
```java
import java.util.Scanner;
import --------------------;
public class Q3_2 {
public static void main(String [] args) {
int x, num;
Scanner keyboard = new Scanner(-------------);
Random rand1 = new Random();
System.out.print("Please enter a positive integer: ");
x = keyboard.nextInt();
num = ---------------------;
System.out.println(num);
}
}
```
#### Missing Code Options:
A. `java.util.Random, system.in, nextInt(x + 10)`
B. `java.util.Random, System.in , rand1.nextInt(x) + 10`
C. `java.util.Random, keyboard, rand1.nextInt(x+10)`
D. `java.util.*, keyboard, rand1.nextInt(x) + 10`
**Explanation:**
The code above is designed to prompt the user to enter a positive integer, then generate and print a random number in the range of 10 and the entered positive integer. To complete the code, we need to choose the correct imports and method calls.
**Correct Answer:**
**D. java.util.*, keyboard, rand1.nextInt(x) + 10**
**Explanation:**
1. The `import java.util.*;` statement allows you to import all classes from the `java.util` package, which includes both `Scanner` and `Random`.
2. `new Scanner(System.in);` correctly initializes the `Scanner` to take input from the keyboard.
3. `rand1.nextInt(x) + 10` generates a random number between 0 (inclusive) and `x` (exclusive) and adds 10 to it, ensuring the result is within the range 10 to (x + 10) - 1.](https://content.bartleby.com/qna-images/question/0e6f6223-c696-4938-9015-1aa854831435/14245bcc-ad4f-4714-afd2-2d34975cce5f/f3x1j9v_processed.png)
Transcribed Image Text:### Question 29
Choose the missing code for lines 2, 9, and 17 in the following program to generate a random number in the range of 10 and the number that the user inputs through the keyboard.
#### Code Snippet:
```java
import java.util.Scanner;
import --------------------;
public class Q3_2 {
public static void main(String [] args) {
int x, num;
Scanner keyboard = new Scanner(-------------);
Random rand1 = new Random();
System.out.print("Please enter a positive integer: ");
x = keyboard.nextInt();
num = ---------------------;
System.out.println(num);
}
}
```
#### Missing Code Options:
A. `java.util.Random, system.in, nextInt(x + 10)`
B. `java.util.Random, System.in , rand1.nextInt(x) + 10`
C. `java.util.Random, keyboard, rand1.nextInt(x+10)`
D. `java.util.*, keyboard, rand1.nextInt(x) + 10`
**Explanation:**
The code above is designed to prompt the user to enter a positive integer, then generate and print a random number in the range of 10 and the entered positive integer. To complete the code, we need to choose the correct imports and method calls.
**Correct Answer:**
**D. java.util.*, keyboard, rand1.nextInt(x) + 10**
**Explanation:**
1. The `import java.util.*;` statement allows you to import all classes from the `java.util` package, which includes both `Scanner` and `Random`.
2. `new Scanner(System.in);` correctly initializes the `Scanner` to take input from the keyboard.
3. `rand1.nextInt(x) + 10` generates a random number between 0 (inclusive) and `x` (exclusive) and adds 10 to it, ensuring the result is within the range 10 to (x + 10) - 1.
Expert Solution
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
This is a popular solution
Trending nowThis is a popular solution!
Step by stepSolved in 2 steps with 1 images
Knowledge Booster
Similar questions
arrow_back_ios
arrow_forward_ios
Recommended textbooks for you
- Computer Networking: A Top-Down Approach (7th Edi...Computer EngineeringISBN:9780133594140Author:James Kurose, Keith RossPublisher:PEARSON
Computer Organization and Design MIPS Edition, Fi...Computer EngineeringISBN:9780124077263Author:David A. Patterson, John L. HennessyPublisher:Elsevier Science
Network+ Guide to Networks (MindTap Course List)Computer EngineeringISBN:9781337569330Author:Jill West, Tamara Dean, Jean AndrewsPublisher:Cengage Learning 
Concepts of Database ManagementComputer EngineeringISBN:9781337093422Author:Joy L. Starks, Philip J. Pratt, Mary Z. LastPublisher:Cengage Learning
Prelude to ProgrammingComputer EngineeringISBN:9780133750423Author:VENIT, StewartPublisher:Pearson Education
Sc Business Data Communications and Networking, T...Computer EngineeringISBN:9781119368830Author:FITZGERALDPublisher:WILEY
Computer Networking: A Top-Down Approach (7th Edi...
Computer Engineering
ISBN:9780133594140
Author:James Kurose, Keith Ross
Publisher:PEARSON
Computer Organization and Design MIPS Edition, Fi...
Computer Engineering
ISBN:9780124077263
Author:David A. Patterson, John L. Hennessy
Publisher:Elsevier Science
Network+ Guide to Networks (MindTap Course List)
Computer Engineering
ISBN:9781337569330
Author:Jill West, Tamara Dean, Jean Andrews
Publisher:Cengage Learning
Concepts of Database Management
Computer Engineering
ISBN:9781337093422
Author:Joy L. Starks, Philip J. Pratt, Mary Z. Last
Publisher:Cengage Learning
Prelude to Programming
Computer Engineering
ISBN:9780133750423
Author:VENIT, Stewart
Publisher:Pearson Education
Sc Business Data Communications and Networking, T...
Computer Engineering
ISBN:9781119368830
Author:FITZGERALD
Publisher:WILEY