Write a program that passes an unspecified number of integers as command-line arguments to the main method and display the total number of integers that the user entered and their total.
Write a program that passes an unspecified number of integers as command-line arguments to the main method and display the total number of integers that the user entered and their total.
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
Related questions
Question
100%
I just started learning java and having trouble with this problem. Please help figure out the coding and please add note if possible next to your codes for my understanding.
![**Task Description: Passing Command-Line Arguments in Java**
**Objective:**
Write a program that passes an unspecified number of integers as command-line arguments to the main method and displays:
- The total number of integers that the user entered
- Their total sum
**Explanation:**
In this task, learners are expected to create a Java program that takes advantage of command-line arguments to accept an unspecified number of integers from the user. The program should then calculate and display two pieces of information:
1. **The Total Number of Integers:** This involves counting how many command-line arguments were provided.
2. **The Sum of the Integers:** This involves summing up all the provided integers.
**Implementation Steps:**
1. **Main Method Setup:** Configure the `main` method to receive command-line inputs.
2. **Input Parsing:** Convert the input arguments from strings to integers.
3. **Counting the Integers:** Use a counter to determine how many integers were entered.
4. **Summing the Integers:** Sum up all the input integers.
5. **Output the Results:** Print the total count of integers and their sum to the console.
**Example Code:**
```java
public class CommandLineSum {
public static void main(String[] args) {
int totalCount = args.length;
int sum = 0;
for (String arg : args) {
sum += Integer.parseInt(arg);
}
System.out.println("Total number of integers entered: " + totalCount);
System.out.println("Sum of the integers: " + sum);
}
}
```
**Explanation of Code:**
- `args` contains the command-line arguments.
- `totalCount` is calculated as the length of `args`.
- The program uses a for-each loop to iterate over `args`, converting each to an integer and adding it to `sum`.
- The results are printed to the console.
**Usage Example:**
To run the program, use the following command in the terminal:
```
java CommandLineSum 3 5 7 2
```
**Expected Output:**
```
Total number of integers entered: 4
Sum of the integers: 17
```
This exercise teaches students how to handle command-line arguments and perform basic operations on them in Java.](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F34215fe4-737d-4111-858a-1ca99d565feb%2Ff1afebe9-b494-4ea4-bb83-639dfa6537ce%2Flo4wxpb_processed.png&w=3840&q=75)
Transcribed Image Text:**Task Description: Passing Command-Line Arguments in Java**
**Objective:**
Write a program that passes an unspecified number of integers as command-line arguments to the main method and displays:
- The total number of integers that the user entered
- Their total sum
**Explanation:**
In this task, learners are expected to create a Java program that takes advantage of command-line arguments to accept an unspecified number of integers from the user. The program should then calculate and display two pieces of information:
1. **The Total Number of Integers:** This involves counting how many command-line arguments were provided.
2. **The Sum of the Integers:** This involves summing up all the provided integers.
**Implementation Steps:**
1. **Main Method Setup:** Configure the `main` method to receive command-line inputs.
2. **Input Parsing:** Convert the input arguments from strings to integers.
3. **Counting the Integers:** Use a counter to determine how many integers were entered.
4. **Summing the Integers:** Sum up all the input integers.
5. **Output the Results:** Print the total count of integers and their sum to the console.
**Example Code:**
```java
public class CommandLineSum {
public static void main(String[] args) {
int totalCount = args.length;
int sum = 0;
for (String arg : args) {
sum += Integer.parseInt(arg);
}
System.out.println("Total number of integers entered: " + totalCount);
System.out.println("Sum of the integers: " + sum);
}
}
```
**Explanation of Code:**
- `args` contains the command-line arguments.
- `totalCount` is calculated as the length of `args`.
- The program uses a for-each loop to iterate over `args`, converting each to an integer and adding it to `sum`.
- The results are printed to the console.
**Usage Example:**
To run the program, use the following command in the terminal:
```
java CommandLineSum 3 5 7 2
```
**Expected Output:**
```
Total number of integers entered: 4
Sum of the integers: 17
```
This exercise teaches students how to handle command-line arguments and perform basic operations on them in Java.
![Below is the transcription of the provided image for our Educational website, along with an explanation of its components.
---
## Introduction to Java Programming: Lab Assignment
### Lab 9: Simple Addition Program
In this lab, we will learn how to write a basic Java program that prints a message and calculates the sum of numbers. Let's analyze the structure provided in the template:
```java
package homework;
public class Lab9 {
// Main method
public static void main(String[] args) {
System.out.println("You entered " +
/*Please write your code here*/ + " numbers");
// Please write your code here
System.out.println("The sum of these numbers is " +
/*Please write your code here*/);
}
}
```
#### Breakdown of Components:
1. **Package Declaration**:
```java
package homework;
```
- The `package` statement groups related classes. Here, it indicates that the class `Lab9` is part of the `homework` package.
2. **Class Declaration**:
```java
public class Lab9 {
```
- This declares a public class named `Lab9`.
3. **Main Method**:
```java
public static void main(String[] args) {
```
- The `main` method is the entry point of any Java application. It is required to run the program.
4. **Printing the Number of Entries**:
```java
System.out.println("You entered " +
/*Please write your code here*/ + " numbers");
```
- This line prints a message indicating the number of entries. You need to insert the number of entries in place of the highlighted comment `/*Please write your code here*/`.
5. **Calculation and Sum Output**:
```java
// Please write your code here
```
- Here, you should write your own logic to handle the user input and calculate the sum of the numbers.
```java
System.out.println("The sum of these numbers is " +
/*Please write your code here*/);
```
- This line prints the calculated sum. You need to replace the highlighted comment with your code that provides the sum of the numbers.
### Instructions:
1. Fill in the first placeholder with the number of entries (e.g., from user input or predefined values).
2. Write code to calculate the](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F34215fe4-737d-4111-858a-1ca99d565feb%2Ff1afebe9-b494-4ea4-bb83-639dfa6537ce%2Fl1va9nd_processed.png&w=3840&q=75)
Transcribed Image Text:Below is the transcription of the provided image for our Educational website, along with an explanation of its components.
---
## Introduction to Java Programming: Lab Assignment
### Lab 9: Simple Addition Program
In this lab, we will learn how to write a basic Java program that prints a message and calculates the sum of numbers. Let's analyze the structure provided in the template:
```java
package homework;
public class Lab9 {
// Main method
public static void main(String[] args) {
System.out.println("You entered " +
/*Please write your code here*/ + " numbers");
// Please write your code here
System.out.println("The sum of these numbers is " +
/*Please write your code here*/);
}
}
```
#### Breakdown of Components:
1. **Package Declaration**:
```java
package homework;
```
- The `package` statement groups related classes. Here, it indicates that the class `Lab9` is part of the `homework` package.
2. **Class Declaration**:
```java
public class Lab9 {
```
- This declares a public class named `Lab9`.
3. **Main Method**:
```java
public static void main(String[] args) {
```
- The `main` method is the entry point of any Java application. It is required to run the program.
4. **Printing the Number of Entries**:
```java
System.out.println("You entered " +
/*Please write your code here*/ + " numbers");
```
- This line prints a message indicating the number of entries. You need to insert the number of entries in place of the highlighted comment `/*Please write your code here*/`.
5. **Calculation and Sum Output**:
```java
// Please write your code here
```
- Here, you should write your own logic to handle the user input and calculate the sum of the numbers.
```java
System.out.println("The sum of these numbers is " +
/*Please write your code here*/);
```
- This line prints the calculated sum. You need to replace the highlighted comment with your code that provides the sum of the numbers.
### Instructions:
1. Fill in the first placeholder with the number of entries (e.g., from user input or predefined values).
2. Write code to calculate the
Expert Solution
![](/static/compass_v2/shared-icons/check-mark.png)
This question has been solved!
Explore an expertly crafted, step-by-step solution for a thorough understanding of key concepts.
Step by step
Solved in 2 steps with 2 images
![Blurred answer](/static/compass_v2/solution-images/blurred-answer.jpg)
Knowledge Booster
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, computer-science and related others by exploring similar questions and additional content below.Recommended textbooks for you
![Database System Concepts](https://www.bartleby.com/isbn_cover_images/9780078022159/9780078022159_smallCoverImage.jpg)
Database System Concepts
Computer Science
ISBN:
9780078022159
Author:
Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:
McGraw-Hill Education
![Starting Out with Python (4th Edition)](https://www.bartleby.com/isbn_cover_images/9780134444321/9780134444321_smallCoverImage.gif)
Starting Out with Python (4th Edition)
Computer Science
ISBN:
9780134444321
Author:
Tony Gaddis
Publisher:
PEARSON
![Digital Fundamentals (11th Edition)](https://www.bartleby.com/isbn_cover_images/9780132737968/9780132737968_smallCoverImage.gif)
Digital Fundamentals (11th Edition)
Computer Science
ISBN:
9780132737968
Author:
Thomas L. Floyd
Publisher:
PEARSON
![Database System Concepts](https://www.bartleby.com/isbn_cover_images/9780078022159/9780078022159_smallCoverImage.jpg)
Database System Concepts
Computer Science
ISBN:
9780078022159
Author:
Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:
McGraw-Hill Education
![Starting Out with Python (4th Edition)](https://www.bartleby.com/isbn_cover_images/9780134444321/9780134444321_smallCoverImage.gif)
Starting Out with Python (4th Edition)
Computer Science
ISBN:
9780134444321
Author:
Tony Gaddis
Publisher:
PEARSON
![Digital Fundamentals (11th Edition)](https://www.bartleby.com/isbn_cover_images/9780132737968/9780132737968_smallCoverImage.gif)
Digital Fundamentals (11th Edition)
Computer Science
ISBN:
9780132737968
Author:
Thomas L. Floyd
Publisher:
PEARSON
![C How to Program (8th Edition)](https://www.bartleby.com/isbn_cover_images/9780133976892/9780133976892_smallCoverImage.gif)
C How to Program (8th Edition)
Computer Science
ISBN:
9780133976892
Author:
Paul J. Deitel, Harvey Deitel
Publisher:
PEARSON
![Database Systems: Design, Implementation, & Manag…](https://www.bartleby.com/isbn_cover_images/9781337627900/9781337627900_smallCoverImage.gif)
Database Systems: Design, Implementation, & Manag…
Computer Science
ISBN:
9781337627900
Author:
Carlos Coronel, Steven Morris
Publisher:
Cengage Learning
![Programmable Logic Controllers](https://www.bartleby.com/isbn_cover_images/9780073373843/9780073373843_smallCoverImage.gif)
Programmable Logic Controllers
Computer Science
ISBN:
9780073373843
Author:
Frank D. Petruzella
Publisher:
McGraw-Hill Education