Exercise 2.9.7: Cu rrency
Fill in the Currency class using the method comments as a guide' For getDollars and getCents , you can isolate the dollar part by rounding the Double to an Integer. To do that, get the double value using doubleValue and cast the result to an Integer. (You can refer to this previous example: https://codehs.com/editor/1720238/?I8802/6165). There are several ways to get the cents, but you need to be careful not to get a double rounding error. The safest way is to multiple the orginal value by 100, then cast to an integer and then use a mod 100 function: cents = (inthalue ' 100) 96 100 When you run main , you should get Value of bankroll: $12.45 Dollars: 12 Cents: 45 Value of bankroll: $20.56 Dollars: 20 Cents: 56 Value of bankroll: $67.78 Dollars: 67 Cents: 78
public class CurrencyTester
{
public static void main(String[] args)
{
Currency bankRoll = new Currency(12.45);
System.out.println("Value of bankroll: " + bankRoll);
System.out.println("Dollars: " + bankRoll.getDollars());
System.out.println("Cents: " + bankRoll.getCents());
bankRoll.setValue(20.56);
System.out.println("Value of bankroll: " + bankRoll);
System.out.println("Dollars: " + bankRoll.getDollars());
System.out.println("Cents: " + bankRoll.getCents());
bankRoll.setValue(67.78);
System.out.println("Value of bankroll: " + bankRoll);
System.out.println("Dollars: " + bankRoll.getDollars());
System.out.println("Cents: " + bankRoll.getCents());
}
}
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public class Currency
{
private Double value;
// Constructor
public Currency(Double startValue)
{
value = startValue;
}
// Sets value to newValue
public void setValue(Double newValue)
{
value = newValue;
}
// Returns the dollar portion of value
// if value is 12.34, returns 12
public Integer getDollars()
{
}
// Returns the cents portion of value
// as an Integer
// if value is 12.34, returns 34
public Integer getCents()
{
}
// Returns a String representation
// in the format
// $12.34
public String toString()
{
}
}
