Conditionals and Loops - Java Software Solutions: Foundations of Program Design - page 218

LISTING 5.2 continued

System.out.println ();

// Pay overtime at "time and a half"
if (hours > STANDARD)
pay = STANDARD * RATE + (hours-STANDARD) * (RATE * 1.5);
else
pay = hours * RATE;

NumberFormat fmt = NumberFormat.getCurrencyInstance();
System.out.println ("Gross earnings: " + fmt.format(pay));
}
}

OUTPUT

Enter the number of hours worked: 46

Gross earnings: $404.25

This example makes use of an object called roster . Even without knowing
what roster represents, or from what class it was created, we can see that it
has at least three methods: getSize , expand , and addName . The condition of the
if statement calls getSize and compares the result to the constant FULL . If the
condition is true, the expand method is invoked (apparently to expand the size of
the roster). If the roster is not yet full, the variable name is passed as a parameter
to the addName method.
The program in Listing 5.3 instantiates a Coin object, flips the coin by call-
ing the flip method, then uses an if-else statement to determine which of two
sentences gets printed based on the result.

LISTING 5.3

//********************************************************************
// CoinFlip.java Author: Lewis/Loftus
//
// Demonstrates the use of an if-else statement.
//********************************************************************