using java. Use the main() method to create and populate the array with the 8 values from the salary array in the worksheet. To give you practice in the different ways to populate arrays, you will do this four different ways for this problem. Then you'll add methods to do a couple other tasks. Use this data, in this order:Salary 33880.50 10700.25 40204.30 136900.80 33239.00 60774.30 150243.10 45000.00Subscript 0 1 2 3 4 5 6 7Ordinal 1st 2nd 3rd 4th 5th 6th 7th 8thCreate your main() method skeleton, then add this method after main() to display the array. You'll be using it several times:public static void fvDisplayArray(double pdValues){int iSub;int iNumElements;DecimalFormat dfMoney = New DecimalFormat("$###,###.00");iNumElements = pdValues.length;for (iSub = 0; iSub < iNumElements; iSub ++){System.out.println("Ordinal value " + (iSub + 1) + " (subscript " + iSub + "): " + dfMoney.format(pdValues[iSub]));}return;}The output should look like this:Ordinal value 1 (subscript 0): $33,880.50Ordinal value 2 (subscript 1): $10,700.25Ordinal value 3 (subscript 2): $40,204.30Ordinal value 8 (subscript 7): $45,000.00_____________________________________________________________________________________________For the first approach, use direct assignment statements to populate the array. First, construct the array to store the eight salary values. Then, add eight individual assignment statements to populate the array. Add a statement to call fvDisplay() passing the name of the array as an argument to verify it works rightOn to the second approach. Comment out /* */ out both the array constructor and the eight assignment statements. This approach will use "shortcut" assignment instead. Create a new constructor that uses the "shortcut" method and assigns all eight values in the same Java statement using a comma-separated list in curly bracesFor the third approach, populate the array from user-supplied console input. Comment out the "shortcut" assignment statement from the second approach, and uncomment the original array constructor from the first: double dSals[8]; or whatever you named it.Now, in a loop, prompt the user for a value, capture the value to an input-capture variable, and then store the value to the next available array element. The style of loop is up to you. Your input dialog should look like this (yellow highlight is what the user types in at runtime). To display the contents, add a statement to call fvDisplay() passing the name of the array as an argument to verify it works right.Salary 33880.50 10700.25 40204.30 136900.80 33239.00 60774.30 150243.10 45000.00Subscript 0 1 2 3 4 5 6 7Ordinal 1st 2nd 3rd 4th 5th 6th 7th 8thEnter salary 1: 33880.50Enter salary 2: 10700.25Enter salary 3: 40204.30Enter salary 8: 45000.00For the fourth and final approach, create an input file (.txt) with the same salary data. This time, read the data file with a Scanner and the skills you just learned with file I/O and populate the array from the data file. Comment out the unneeded code from the first three steps above.This can get tricky. Since you're allocating 8 array elements in the constructor, your data file must have exactly 8 items in it. Too many and you could go out of bounds for the array, too few and the entire array won't be fully populated. Experiment with these two scenarios as you work on the problemyou'll learn from experience how this works.After you have your data file created, add the code to main() to call a new method to read the data file and populate the array. Use a void() method and pass it two arguments: the array itself and the Fully Qualified File Name (FQFN) to your .txt file. Remember to follow method and parameter naming standards for this class.Also in main() AFTER your new method call to populate the array, add another statement to execute the display array method passing the name of the array to verify your method properly populated the array.This will give you an idea of how Java handles arrays when they are received as parameters. Changes will propagate back to the calling method's scopeunlike regular variables in a parameter list. This is why you can pass an empty array to another method, populate it there, and then return to the calling methodonly to find that the changes "stuck." Arrays behave much like "passing by reference" in other languages.

Question

using java. Use the main() method to create and populate the array with the 8 values from the salary array in the worksheet. To give you practice in the different ways to populate arrays, you will do this four different ways for this problem. Then you'll add methods to do a couple other tasks. Use this data, in this order:Salary 33880.50 10700.25 40204.30 136900.80 33239.00 60774.30 150243.10 45000.00Subscript 0 1 2 3 4 5 6 7Ordinal 1st 2nd 3rd 4th 5th 6th 7th 8thCreate your main() method skeleton, then add this method after main() to display the array. You'll be using it several times:public static void fvDisplayArray(double pdValues){int iSub;int iNumElements;DecimalFormat dfMoney = New DecimalFormat("$###,###.00");iNumElements = pdValues.length;for (iSub = 0; iSub &lt; iNumElements; iSub ++){System.out.println("Ordinal value " + (iSub + 1) + " (subscript " + iSub + "): " + dfMoney.format(pdValues[iSub]));}return;}The output should look like this:Ordinal value 1 (subscript 0): $33,880.50Ordinal value 2 (subscript 1): $10,700.25Ordinal value 3 (subscript 2): $40,204.30Ordinal value 8 (subscript 7): $45,000.00_____________________________________________________________________________________________For the first approach, use direct assignment statements to populate the array. First, construct the array to store the eight salary values. Then, add eight individual assignment statements to populate the array. Add a statement to call fvDisplay() passing the name of the array as an argument to verify it works rightOn to the second approach. Comment out /* */ out both the array constructor and the eight assignment statements. This approach will use "shortcut" assignment instead. Create a new constructor that uses the "shortcut" method and assigns all eight values in the same Java statement using a comma-separated list in curly bracesFor the third approach, populate the array from user-supplied console input. Comment out the "shortcut" assignment statement from the second approach, and uncomment the original array constructor from the first: double dSals[8]; or whatever you named it.Now, in a loop, prompt the user for a value, capture the value to an input-capture variable, and then store the value to the next available array element. The style of loop is up to you. Your input dialog should look like this (yellow highlight is what the user types in at runtime). To display the contents, add a statement to call fvDisplay() passing the name of the array as an argument to verify it works right.Salary 33880.50 10700.25 40204.30 136900.80 33239.00 60774.30 150243.10 45000.00Subscript 0 1 2 3 4 5 6 7Ordinal 1st 2nd 3rd 4th 5th 6th 7th 8thEnter salary 1: 33880.50Enter salary 2: 10700.25Enter salary 3: 40204.30Enter salary 8: 45000.00For the fourth and final approach, create an input file (.txt) with the same salary data. This time, read the data file with a Scanner and the skills you just learned with file I/O and populate the array from the data file. Comment out the unneeded code from the first three steps above.This can get tricky. Since you're allocating 8 array elements in the constructor, your data file must have exactly 8 items in it. Too many and you could go out of bounds for the array, too few and the entire array won't be fully populated. Experiment with these two scenarios as you work on the problemyou'll learn from experience how this works.After you have your data file created, add the code to main() to call a new method to read the data file and populate the array. Use a void() method and pass it two arguments: the array itself and the Fully Qualified File Name (FQFN) to your .txt file. Remember to follow method and parameter naming standards for this class.Also in main() AFTER your new method call to populate the array, add another statement to execute the display array method passing the name of the array to verify your method properly populated the array.This will give you an idea of how Java handles arrays when they are received as parameters. Changes will propagate back to the calling method's scopeunlike regular variables in a parameter list. This is why you can pass an empty array to another method, populate it there, and then return to the calling methodonly to find that the changes "stuck." Arrays behave much like "passing by reference" in other languages.

taurean.erdman · Accepted Answer

Sure! Below is the Java code that fulfills the requirements mentioned in the question:import java.text.DecimalFormat;import java.util.Scanner;public class Main { public static void main(String[] args) { double[] salary = new double[8]; // Approach 1: Direct assignment /*salary[0] = 33880.50; salary[1] = 10700.25; salary[2] = 40204.30; salary[3] = 136900.80; salary[4] = 33239.00; salary[5] = 60774.30; salary[6] = 150243.10; salary[7] = 45000.00; fvDisplayArray(salary);*/ // Approach 2: Shortcut assignment double[] salary = {33880.50, 10700.25, 40204.30, 136900.80, 33239.00, 60774.30, 150243.10, 45000.00}; fvDisplayArray(salary); // Approach 3: User-supplied console input /*Scanner scanner = new Scanner(System.in); for (int i = 0; i &lt; salary.length; i++) { System.out.print("Enter salary " + (i + 1) + ": "); salary[i] = scanner.nextDouble(); } fvDisplayArray(salary);*/ // Approach 4: Reading from a data file /*String fileName = "data.txt"; populateArrayFromFile(salary, fileName); fvDisplayArray(salary);*/ } public static void fvDisplayArray(double[] values) { int numElements = values.length; DecimalFormat dfMoney = new DecimalFormat("$###,###.00"); for (int i = 0; i &lt; numElements; i++) { int ordinal = i + 1; int subscript = i; System.out.println("Ordinal value " + ordinal + " (subscript " + subscript + "): " + dfMoney.format(values[i])); } } public static void populateArrayFromFile(double[] array, String fileName) { try { Scanner fileScanner = new Scanner(new File(fileName)); for (int i = 0; i &lt; array.length; i++) { if (fileScanner.hasNextDouble()) { array[i] = fileScanner.nextDouble(); } else { System.out.println("Error: Insufficient data in the file."); return; } } fileScanner.close(); } catch (FileNotFoundException e) { System.out.println("Error: File not found."); } }}Please note that only the code for the second approach is active in the provided code snippet. To test the other approaches, you can uncomment the corresponding sections and comment out the active section.Remember to create a data.txt file with eight salary values, each on a separate line, to test the fourth approach.Learn more about Java herehttps://brainly.com/question/29966819#SPJ11

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