NEED HELP CORRECTING ERROR IN JAVA

Hello,

I need help correcting this error in JAVA

I am not sure if I have something formatted wrong or what. I thought the error was due to quotation marks being single or double, but that didn't fix it either.

ERROR BELOW:

Tests Event method addAmounts()

Compilation failed

Compilation failed

java:6: error: incompatible types: char cannot be converted to String event.addAmount('T', 10); ^

java:7: error: incompatible types: char cannot be converted to String event.addAmount('D', 20); ^

java:8: error: incompatible types: char cannot be converted to String event.addAmount('E', 30); ^

Note: Some messages have been simplified; recompile with -Xdiags:verbose to get full output 3 errors

Tests Event method calcEventProfit()

Compilation failed

Compilation failed

java:6: error: incompatible types: char cannot be converted to String event.addAmount('T', 100);

java:7: error: incompatible types: char cannot be converted to String event.addAmount('D', 200); ^

java:8: error: incompatible types: char cannot be converted to String event.addAmount('E', 160); ^

Note: Some messages have been simplified; recompile with -Xdiags:verbose to get full output 3 errors

EventManager.java

/**

* Program description

* @

*/

import java.util.Scanner;

import java.io.File;

import java.io.FileNotFoundException;

import java.text.DecimalFormat;

public class EventManager {

public static void main(String[] args) {

Scanner keyboard = new Scanner(System.in);

System.out.println("Enter filename:");

String filename=keyboard.nextLine();

Scanner eventFile;

try {

eventFile = new Scanner(new File(filename));

Event event=new Event();

while(eventFile.hasNextLine()){

String line=eventFile.nextLine();

String[] values=line.split("\\s");

String amountType=values[0];

double amount=Double.parseDouble(values[1]);

DecimalFormat format=new DecimalFormat("0.00");

event.addAmount(amountType,amount);

System.out.println("Line read: "+values[0]+" "+format.format(amount));

}

System.out.println("Done reading file "+filename);

event.displayTotals();

double eventProfit=event.calcEventProfit();

DecimalFormat format=new DecimalFormat("0.00");

if(eventProfit>=0){

System.out.println(" Event generated a profit of $ "+format.format(eventProfit));

}else{

System.out.println(" Event generated a loss of $ "+format.format(eventProfit));

}

keyboard.close();

eventFile.close();

} catch (FileNotFoundException e) {

System.err.println("Could not open input file "+filename+" Program exiting.");

}

}

}

Event.java

import java.text.DecimalFormat;

/**

*

*

*

* Class description

*

*

*

* @author

*

*

*

*/

public class Event {

private double ticketSales; // total profit from event ticket sales

private double donations; // total profit from event donations

private double expenses; // total expenses to put on the event

DecimalFormat format = new DecimalFormat("0.00");

public Event() {

ticketSales = 0;

donations = 0;

expenses = 0;

}

public double getTicketSales() {

return ticketSales;

}

public double getDonations() {

return donations;

}

public double getExpenses() {

return expenses;

}

// Add your code here (and do not delete any of the above code)

public void addAmount(String amountType, double amount) {

if(amountType.equals("T")){

ticketSales+=amount;

}else if(amountType.equals("D")){

donations+=amount;

}else if(amountType.equals("E")){

expenses+=amount;

}else{

System.out.println("Invalid Amount type");

}

}

public void displayTotals() {

System.out.println();

System.out.printf("Total ticket sales: %10s ", format.format(ticketSales));

System.out.printf("Total donations: %13s ", format.format(donations));

System.out.printf("Total expenses: %14s ", format.format(expenses));

}

public double calcEventProfit() {

return (ticketSales + donations - expenses);

}

}