Question

Taking this program how can the requirements under it be added in java?

import java.util.Scanner;

public class RetirementSavings {
   private static final int MAX_SALARY = 300000;
   private static final double MAX_SAVING_RATE = 0.3;
   private static final double MAX_INTEREST_RATE = 0.2;
   private static final int MAX_YEAR_EMPLOYED = 40;

   public static void main(String[] args) {
       double savings_rate, interest_rate;
       int salary, years_employed;
       String name = ""; // name is initialized with an empty string
       Scanner scan = new Scanner(System.in);
       int position = 0;// this will be used to determine at which position the error has occurred
       System.out.print("Enter input: salary savings_rate interest_rate years_employed name(last,first)\n");
       try {

           String[] inputLine = scan.nextLine().split("\\s+");

           salary = Integer.parseInt(inputLine[0]);
           position++;
           if (salary < 0) {
               System.out.println("salary " + salary + " less than 0");
               System.exit(0);
           } else if (salary > MAX_SALARY) {
               System.out.println("salary " + salary + " exceeds maximum " + MAX_SALARY);
               System.exit(0);
           }

           savings_rate = Double.parseDouble(inputLine[1]);
           position++;
           if (savings_rate > 1) {
               savings_rate = savings_rate / 100;
           }
           if (savings_rate < 0) {
               System.out.println("savings rate " + savings_rate + " less than 0");
               System.exit(0);
           } else if (savings_rate > MAX_SAVING_RATE) {
               System.out.println("savings rate " + savings_rate + " exceeds maximum " + MAX_SAVING_RATE);
               System.exit(0);
           }

           interest_rate = Double.parseDouble(inputLine[2]);
           position++;
           if (interest_rate > 1) {
               interest_rate = interest_rate / 100;
           }
           if (interest_rate < 0) {
               System.out.println("interest rate " + interest_rate + " less than 0");
               System.exit(0);
           } else if (interest_rate > MAX_INTEREST_RATE) {
               System.out.println("interest rate " + interest_rate + " exceeds maximum " + MAX_INTEREST_RATE);
               System.exit(0);
           }

           years_employed = (int)Double.parseDouble(inputLine[3]);
           if(years_employed<Double.parseDouble(inputLine[3])) {
               //rounding up years employed
               years_employed++;
           }
           position++;
           if (years_employed < 0) {
               System.out.println("years employed " + years_employed + " less than 0");
               System.exit(0);
           } else if (years_employed > MAX_YEAR_EMPLOYED) {
               System.out.println("years employed " + years_employed + " exceeds maximum " + MAX_YEAR_EMPLOYED);
               System.exit(0);
           }

           if (inputLine.length == 5) {
               name = inputLine[4];
               position++;
           }
           if (name.isEmpty()) {// check if name is empty
               System.out.println("Error: Illegal input for name - exiting");
               System.exit(0);
           }

          

           System.out.println("Salary: " + salary);
           System.out.println("Savings rate: " + savings_rate);
           System.out.println("Interest rate: " + interest_rate);
           System.out.println("Years of Employment: " + years_employed);
           System.out.println("Name: " + name);
           double retirement_savings = 0;
           double interest = 0;
           double savingsPerYear = savings_rate * salary;
           for(int i=1;i<=years_employed;i++) {
               retirement_savings += savingsPerYear;
               interest = retirement_savings*interest_rate;
               retirement_savings+=interest;
           System.out.printf("Year: %d Intrest Earned: %.2f Balance: %.2f\n",i,interest, retirement_savings);
           }
       } catch (ArrayIndexOutOfBoundsException e) { // catch when inputLine is referenced with improper index due to
                                                       // not providing proper data
           System.out.println("Invalid number of inputs!");
           System.exit(0);
       } catch (NumberFormatException e) { // catch when data could not be converted to proper type
           String errorFieldName = null;

           if (position == 0) {
               errorFieldName = "salary";
           } else if (position == 1) {
               errorFieldName = "savings rate";
           } else if (position == 2) {
               errorFieldName = "interest rate";
           } else if (position == 3) {
               errorFieldName = "years employed";
           }
           System.out.println("Error: Illegal input for " + errorFieldName + " - exiting");
           System.exit(0);
       } finally {
           scan.close();// close scanner anyway
       }
   }
}

Requirements:

you will read in a list of a maximum of 5 employees with data into an array and output the results based on their total retirement savings. Feel free to size your array with a maximum size of 5.

You can either define your outer loop to only read in 5 values or make it flexible and use the "quit" string to terminate. You have flexibility there.

Sort the results based on the total retirement savings and then output the information based on descending order (highest to lowest) as shown below.

Use whatever sort method you are comfortable with (selection sort, bubble sort, Arrays.sort, etc.).

Things to consider:

• You will need to remove the prompt for input line. Just cut/paste the data below into NetBeans window and display the results.
• You will most likely need to use multiple arrays or a multi-dimensional array for this assignment but there's always more than one way to program. Use whatever works for you and seems the easiest.
• Please follow the output format shown below as a guideline.

Feel free to use methods if it helps you out.

Use the below lines as input for testing:

70000 10 6 31.2 Smith,John
70000 5 6 31 Trump,Don
70000 10 10 25 Pence,Mike
100000 5 5 20 Brady,Tom
300000 10 6 30 Larson,Dr
quit (this is optional. you just need to read in data for 5 employees).

Run

Here's the output using the data above. Notice that the output is sorted based on the Total Retirement Savings.

run:
70000 10 6 31.2 Smith,John
70000 5 6 31 Trump,Don
70000 10 10 25 Pence,Mike
100000 5 5 20 Brady,Tom
300000 10 6 30 Larson,Dr
quit
Done with input
1: Larson,Dr Salary 300000.00 Savings Rate:0.10 Interest Rate:0.06 Years:30.000000 Balance: 2514050.32
2: Pence,Mike Salary 70000.00 Savings Rate:0.10 Interest Rate:0.10 Years:25.000000 Balance: 757272.36
3: Smith,John Salary 70000.00 Savings Rate:0.10 Interest Rate:0.06 Years:32.000000 Balance: 674402.15
4: Trump,Don Salary 70000.00 Savings Rate:0.05 Interest Rate:0.06 Years:31.000000 Balance: 314614.22
5: Brady,Tom Salary 100000.00 Savings Rate:0.05 Interest Rate:0.05 Years:20.000000 Balance: 173596.26
BUILD SUCCESSFUL (total time: 1 second)

Answer 1

==============================

UPDATED JAVA PROGRAM

==============================

import java.text.DecimalFormat;
import java.util.Scanner;

public class RetirementSavings {
private static final int MAX_SALARY = 300000;
private static final double MAX_SAVING_RATE = 0.3;
private static final double MAX_INTEREST_RATE = 0.2;
private static final int MAX_YEAR_EMPLOYED = 40;

private static final int MAX_INPUT = 5;

public static void main(String[] args) {
double savings_rate, interest_rate;
int salary, years_employed;
String name = ""; // name is initialized with an empty string
Scanner scan = new Scanner(System.in);
int position = 0;// this will be used to determine at which position the error has occurred
System.out.print("Enter input: salary savings_rate interest_rate years_employed name(last,first)\n");

//introduce 2 arrays
//one to hold total retirement savings
//other to hol output data
double totalSavings[] = new double[MAX_INPUT];
String outputData[] = new String[MAX_INPUT];

//decimal format for amount field
DecimalFormat df = new DecimalFormat("#.00");

try {
     
   //introducing for loop for the program
   for(int j = 1; j <= MAX_INPUT; j++){
       String input = scan.nextLine();
         
       String[] inputLine = input.split("\\s+");
  
   salary = Integer.parseInt(inputLine[0]);
   position++;
   if (salary < 0) {
   System.out.println("salary " + salary + " less than 0");
   System.exit(0);
   } else if (salary > MAX_SALARY) {
   System.out.println("salary " + salary + " exceeds maximum " + MAX_SALARY);
   System.exit(0);
   }
  
   savings_rate = Double.parseDouble(inputLine[1]);
   position++;
   if (savings_rate > 1) {
   savings_rate = savings_rate / 100;
   }
   if (savings_rate < 0) {
   System.out.println("savings rate " + savings_rate + " less than 0");
   System.exit(0);
   } else if (savings_rate > MAX_SAVING_RATE) {
   System.out.println("savings rate " + savings_rate + " exceeds maximum " + MAX_SAVING_RATE);
   System.exit(0);
   }
  
   interest_rate = Double.parseDouble(inputLine[2]);
   position++;
   if (interest_rate > 1) {
   interest_rate = interest_rate / 100;
   }
   if (interest_rate < 0) {
   System.out.println("interest rate " + interest_rate + " less than 0");
   System.exit(0);
   } else if (interest_rate > MAX_INTEREST_RATE) {
   System.out.println("interest rate " + interest_rate + " exceeds maximum " + MAX_INTEREST_RATE);
   System.exit(0);
   }
  
   years_employed = (int)Double.parseDouble(inputLine[3]);
   if(years_employed<Double.parseDouble(inputLine[3])) {
   //rounding up years employed
   years_employed++;
   }
   position++;
   if (years_employed < 0) {
   System.out.println("years employed " + years_employed + " less than 0");
   System.exit(0);
   } else if (years_employed > MAX_YEAR_EMPLOYED) {
   System.out.println("years employed " + years_employed + " exceeds maximum " + MAX_YEAR_EMPLOYED);
   System.exit(0);
   }
  
   if (inputLine.length == 5) {
   name = inputLine[4];
   position++;
   }
   if (name.isEmpty()) {// check if name is empty
   System.out.println("Error: Illegal input for name - exiting");
   System.exit(0);
   }
  
  
   //Commenting of the below print statements
   //System.out.println("Salary: " + salary);
   //System.out.println("Savings rate: " + savings_rate);
   //System.out.println("Interest rate: " + interest_rate);
   //System.out.println("Years of Employment: " + years_employed);
   //System.out.println("Name: " + name);
     
   double retirement_savings = 0;
   double interest = 0;
   double savingsPerYear = savings_rate * salary;
   for(int i=1;i<=years_employed;i++) {
   retirement_savings += savingsPerYear;
   interest = retirement_savings*interest_rate;
   retirement_savings+=interest;
   //System.out.printf("Year: %d Intrest Earned: %.2f Balance: %.2f\n",i,interest, retirement_savings);
   }
     
   //store total retirement saving for this employee
   totalSavings[j-1]= retirement_savings;
   //store output data for this employee
   outputData[j-1] = name+
                      " Salary "+df.format(salary)+ //format through decimalFormat
                      " Savings Rate:"+String.format("%1.2f", savings_rate)+
                      " Interest Rate:"+String.format("%1.2f", interest_rate)+
                      " Years:"+String.format("%2.6f", (float)years_employed)+ //show years with 6 places after decimal point
                      " Balance:"+df.format(retirement_savings);
     
   }
     
   System.out.println("Done with input.");
     
   //sort the totalSavings and outputData based on descending order of
   //total retirement savings
   //using bubble sort
   for(int i = 0; i < MAX_INPUT ; i++){
       for(int j = 0; j < MAX_INPUT; j++){
           if(totalSavings[i] > totalSavings[j]){
               double temp = totalSavings[i];
               totalSavings[i] = totalSavings[j];
               totalSavings[j] = temp;
                 
               String tempData = outputData[i];
               outputData[i] = outputData[j];
               outputData[j] = tempData;
           }
       }
   }
     
   //print output
   for(int i = 1; i <= MAX_INPUT; i++){
       System.out.println(i+":"+outputData[i-1]);
   }
     
     
     
} catch (ArrayIndexOutOfBoundsException e) { // catch when inputLine is referenced with improper index due to
// not providing proper data
System.out.println("Invalid number of inputs!");
System.exit(0);
} catch (NumberFormatException e) { // catch when data could not be converted to proper type
String errorFieldName = null;

if (position == 0) {
errorFieldName = "salary";
} else if (position == 1) {
errorFieldName = "savings rate";
} else if (position == 2) {
errorFieldName = "interest rate";
} else if (position == 3) {
errorFieldName = "years employed";
}
System.out.println("Error: Illegal input for " + errorFieldName + " - exiting");
System.exit(0);
} finally {
scan.close();// close scanner anyway
}
}
}

=============================

OUTPUT

=============================

Enter input: salary savings_rate interest_rate years_employed name(last,first)
70000 10 6 31.2 Smith,John
70000 5 6 31 Trump,Don
70000 10 10 25 Pence,Mike
100000 5 5 20 Brady,Tom
300000 10 6 30 Larson,Dr
Done with input.
1:Larson,Dr Salary 300000.00 Savings Rate:0.10 Interest Rate:0.06 Years:30.000000 Balance:2514050.32
2:Pence,Mike Salary 70000.00 Savings Rate:0.10 Interest Rate:0.10 Years:25.000000 Balance:757272.36
3:Smith,John Salary 70000.00 Savings Rate:0.10 Interest Rate:0.06 Years:32.000000 Balance:674402.15
4:Trump,Don Salary 70000.00 Savings Rate:0.05 Interest Rate:0.06 Years:31.000000 Balance:314614.22
5:Brady,Tom Salary 100000.00 Savings Rate:0.05 Interest Rate:0.05 Years:20.000000 Balance:173596.26