Errata

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Chapter 1
---------

- page 11 - The code for class Program1 is missing the last three 
	lines. The correct class definition is:

	class Program1 {
		public static void main(String arg[]) {
			System.out.println("This is my first Java program");
			System.out.println(" but it won't be my last.");	
		}
	}

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Chapter 3
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- page 72 - The problem with PrintStream output not being flushed
	seems to have dissappeared (at least on the test Wintel and 
	Unix platforms). This does not introduce any errors into code,
	however the discussion on flushing becomes somewhat moot.

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Chapter 4
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- page 123 - The read and readi methods of the revised Name
	class are missing a 'throws Exception' in the method headers.
	The correct headers are:
		public static Name read(BufferedReader br) throws Exception {
	and:
		public static Name readi(InteractiveIO io) throws Exception {

- page 138 - To avoid 'deprecated API' warnings, the methods
	resize and size should be replaced with setSize and getSize, 
	respectively.

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Chapter 5
---------

- page 147, 150 - in sections 5.4.8 the correct method name should be
	displayData, not displayTotals. displayData is the name
	used in the rest of the TollBooth class development. Similarly,
	in section 5.4.12, the TestTollBooth class incorrectly invokes
	the method DisplayTotals rather than the correct DisplayData.

- page 157 - The declaration of the constants incorrectly has
	semicolons after DuePerHalfTon and TonInPounds. They should
	be commas. Also the formula for tollDue should not have the '5'
	after DuePerAxle.

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Chapter 6
---------

- page 196, 197, 198 - The calcPay method's return statement is
	missing. The last line of that method (before the closing brace)
	should be:
		return pay;

- page 193, 198 - The sample usage code in the middle of page 193,
	and later in the Payroll class on page 198 contains a pair
	of incorrect calls to the calcPay method. The first:
		e.calcPay(30)
	does not assign the returned value to a variable; the second
		pay = e.calcPay(hours)
	uses an undeclared variable 'hours'. The correct sample usage 
	should read:
		Employee 	e;
		e = new Employee("Rudy Crew", 10);
		int pay;
		pay = e.calcPay(30);
		System.out.print(e.getName());
		System.out.print(" earned ");
		System.out.println(pay);

- page 212, 215 - The public Time constructor is incorrectly missing 
	the calculation	of the 'totalMinutes' instance variable. The
	correct version of the constructor is:
		public Time(int hours, int minutes, String amOrPm) {
			if (amOrPm.equals("am")) {
				if (hours==12)
					hours = 0;
			}
			else	// pm
				if (hours!=12)
					hours += 12;
			totalMinutes = hours * 60 + minutes;
		}

- page 213 - The print method has the test for 12pm omitted. The
	correct code for the afternoon case is:
		if(hours>=12){
			isAfternoon=true;
			if (hours != 12)
				hours-=12;
		}

- page 210 and 216 - The sample usage code on page 210 and the
	same code in the TimeUser class has the incorrect test:
		t3.isAfter(t4)
	The correct test (based upon the subsequent assignments to 
	the 'earlier' and 'later' variables is:
		t3.isBefore(t4)
	
- page 239-243 - To avoid 'deprecated API' warnings, the methods
	resize and size should be replaced with setSize and getSize, 
	respectively.

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Chapter 7
---------

- page 250, 253 - The Employee class definition does not include
	a getRate method, which is used in the various testDriver 
	methods. Replace the invocation of getRate with a direct 
	access of the rate instance variable. Thus:
		System.out.print("Rate: ");
		System.out.println(e.getRate());
	should be replaced by:
		System.out.print("Rate: ");
		System.out.println(e.rate);

- page 255 - The invocation of TestHelper.verify for the 
	testing of the calcPay result should read:
		TestHelper.verify(computedPay == correctAnswer, "calcPay test");
	rather than the incorrect
		TestHelper.verify(computedPay != correctAnswer, "calcPay test");

- page 261 - The declaration of the Employee object should read:
		Employee e = new Employee("James Arnold", 20);
	rather than:
		Employee e = new Employee("James", "Arnold", 20);