Database System Concepts
7th Edition
ISBN: 9780078022159
Author: Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher: McGraw-Hill Education
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The language is Java. The method to use is provided!
![Write a program with total change amount as an integer input that outputs the change using the fewest coins, one coin type per line. The coin types are dollars, quarters, dimes, nickels, and pennies. Use singular and plural coin names as appropriate, like 1 penny vs. 2 pennies.
Ex: If the input is:
```
0
```
or less, output:
```
no change
```
Ex: If the input is:
```
45
```
the output is:
```
1 quarter
2 dimes
```
Your program must define and call the following method. Positions 0-4 of coinVals should contain the number of dollars, quarters, dimes, nickels, and pennies, respectively.
```java
public static void exactChange(int userTotal, int[] coinVals)
```
Note: This is a lab from a previous chapter that now requires the use of a method.](https://content.bartleby.com/qna-images/question/8fe79bd2-2df3-45cc-abc0-ffa837cca5d8/f9db3921-89e0-4d14-8f0e-70e73a7d8786/l4p4fkn_processed.png)
Transcribed Image Text:Write a program with total change amount as an integer input that outputs the change using the fewest coins, one coin type per line. The coin types are dollars, quarters, dimes, nickels, and pennies. Use singular and plural coin names as appropriate, like 1 penny vs. 2 pennies.
Ex: If the input is:
```
0
```
or less, output:
```
no change
```
Ex: If the input is:
```
45
```
the output is:
```
1 quarter
2 dimes
```
Your program must define and call the following method. Positions 0-4 of coinVals should contain the number of dollars, quarters, dimes, nickels, and pennies, respectively.
```java
public static void exactChange(int userTotal, int[] coinVals)
```
Note: This is a lab from a previous chapter that now requires the use of a method.
![```java
import java.util.Scanner;
public class LabProgram {
/* Define your method here */
public static void main(String[] args) {
/* Type your code here. */
}
}
```
This Java code snippet is intended as a template or starting point for a lab program. Here is a detailed explanation:
1. **Imports**:
- `import java.util.Scanner;`: This line imports the Scanner class from the `java.util` package, which is used to read input from various input sources, including the keyboard.
2. **Class Definition**:
- `public class LabProgram {`: This line declares a public class named `LabProgram`.
- A class in Java is a blueprint for objects and is defined with the keyword `class`.
3. **Method Placeholder**:
- `/* Define your method here */`: This comment indicates where a user-defined method should be placed based on the specific requirements of the lab or assignment.
4. **Main Method**:
- `public static void main(String[] args) {`: This line declares the `main` method, which is the entry point of any Java application.
- It is `public`, so it can be accessed outside its class; `static`, meaning it belongs to the class `LabProgram` itself rather than an instance of the class; and `void`, indicating it does not return any value.
- `String[] args` allows the program to accept an array of strings as command-line arguments.
5. **Code Placeholder**:
- `/* Type your code here. */`: This comment is a placeholder indicating where the main program logic or additional code should be written.
This template provides a basic structure to start working on a Java application, guiding students to define their methods and incorporate their logic into the `main` method.](https://content.bartleby.com/qna-images/question/8fe79bd2-2df3-45cc-abc0-ffa837cca5d8/f9db3921-89e0-4d14-8f0e-70e73a7d8786/748w9v_processed.png)
Transcribed Image Text:```java
import java.util.Scanner;
public class LabProgram {
/* Define your method here */
public static void main(String[] args) {
/* Type your code here. */
}
}
```
This Java code snippet is intended as a template or starting point for a lab program. Here is a detailed explanation:
1. **Imports**:
- `import java.util.Scanner;`: This line imports the Scanner class from the `java.util` package, which is used to read input from various input sources, including the keyboard.
2. **Class Definition**:
- `public class LabProgram {`: This line declares a public class named `LabProgram`.
- A class in Java is a blueprint for objects and is defined with the keyword `class`.
3. **Method Placeholder**:
- `/* Define your method here */`: This comment indicates where a user-defined method should be placed based on the specific requirements of the lab or assignment.
4. **Main Method**:
- `public static void main(String[] args) {`: This line declares the `main` method, which is the entry point of any Java application.
- It is `public`, so it can be accessed outside its class; `static`, meaning it belongs to the class `LabProgram` itself rather than an instance of the class; and `void`, indicating it does not return any value.
- `String[] args` allows the program to accept an array of strings as command-line arguments.
5. **Code Placeholder**:
- `/* Type your code here. */`: This comment is a placeholder indicating where the main program logic or additional code should be written.
This template provides a basic structure to start working on a Java application, guiding students to define their methods and incorporate their logic into the `main` method.
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