Final Load/Save Problem

Load/Save Code
public void save (String fileName, ChangeJar saveJar){
    double amountSave = saveJar.quarters + saveJar.dimes + saveJar.nickels + saveJar.pennies;

    try {
        FileOutputStream fileOut = new FileOutputStream("C:\\" + fileName + ".dob");
        ObjectOutputStream out = new ObjectOutputStream(fileOut);
        out.writeObject(amountSave);
        out.close();
        fileOut.close();
        System.out.println("Saved ChangeJar is saved in C:\\" + fileName + ".dob");
    }catch(IOException i) {
        i.printStackTrace();
    }
}

public ChangeJar load (String fileName){
    try {
        FileInputStream fileIn = new FileInputStream("C:\\" + fileName + ".dob");
        ObjectInputStream in = new ObjectInputStream(fileIn);
        double loadAmount = (double) in.readObject();
        System.out.println("Loaded ChangeJar from C:\\" + fileName + ".dob\n");
        ChangeJar loadJar = new ChangeJar(loadAmount);
        in.close();
        fileIn.close();

        return loadJar;
    }catch(IOException i) {
        i.printStackTrace();
        return null;
    }catch(ClassNotFoundException c) {
        System.out.println("Amount not found");
        c.printStackTrace();
        return null;
    }
}

Tester Code
// Creates a new ChangeJar, then saves it to the computer. After reseting the jar to have no money in
// it, loads the saved jar file.
ChangeJar s5 = new ChangeJar (1.64);
System.out.println (s5 + "\n");
s5.save("file1", s5);
s5 = new ChangeJar ();
s5.load("file1");
System.out.println (s5);
System.out.println("Should contain\t 6 quarter(s), 1 dime(s), 0 nickel(s) and 4 penny(s).\n");

Results
This jar contains 6 quarter(s), 1 dime(s), 0 nickel(s), and 4 penny(s).

Saved ChangeJar is saved in C:\file1.dob
Loaded ChangeJar from C:\file1.dob

This jar contains 0 quarter(s), 0 dime(s), 0 nickel(s), and 0 penny(s).
Should contain   6 quarter(s), 1 dime(s), 0 nickel(s) and 4 penny(s).