Write a program that reads in a set of coin descriptions from a file. The input file has the format coinName1 coinValue1 coinName2 coinValue2 ... Add a method void read(Scanner in) throws...

Write a program that reads in a set of coin descriptions from a file. The input file has the format

coinName1 coinValue1 coinName2 coinValue2 ...
Add a method

void read(Scanner in) throws FileNotFoundException

to the Coin class of Section 7.2. Throw an exception if the current line is not properly formatted. Then

implement a method

static ArrayList readFile(String filename) throws FileNotFoundException In the main method, call readFile. If an exception is thrown, give the user a chance to select another file. If you read all coins successfully, print the total value.