Errata, 4th Edition

• p69, Chapter 2 - The code sample is missing a minus ( - ) sign. It should be:

  x % y = x - (x / y) * y

• p92, Chapter 2 - The code sample is missing a minus ( - ) sign. It should be:

  for (int i = -100; i <= 100; i++) {

• p95, Chapter 2 - The syntax template shows a variable i where it should say <variable>. It should be:

  for (int <variable> = 1; <variable> <= n; i++) {

  for (int <variable> = 1; <variable> <= n; <variable>++) {

• p96, Chapter 2 - The syntax template shows an elongated dash (—) when it should show two minus signs ( -- ). It should be:

  for (int <variable> = n; <variable> >= 1; <variable>--) {

• p114, Chapter 2 - Three lines in the code sample are missing minus ( - ) signs. They should be:

  line 41:    for (int i = 1; i <= (3 - line); i++) {
  line 45:    for (int i = 1; i <= 2 * (line - 1); i++) {
  line 49:    for (int i = 1; i <= (3 - line); i++) {
  

• p117, Chapter 2 - Line 52 of the code sample is missing a minus ( - ) sign. It should be:

  for (int i = 1; i <= (SUB_HEIGHT - line); i++) {

• p124, Chapter 2 - Two of the self-check problem's answer choices are missing minus ( - ) signs. They should be:
  • c. 30, 20, 10, 0, -10, -20, . . .
  • d. -7, -3, 1, 5, 9, 13, . . .
• p167, Ch. 3: The table text:

  s.replace("l", "y") returns "heyyyyo"

  should read:

  s.replace("l", "yy") returns "heyyyyo"

  (thanks to James Kim of Bellevue College, future CTO)
• p378, Ch. 5: Exercise 5.4 randomX has a small typo. It says "prints a lines" when it should say "prints lines".
• p379, Ch. 5: Exercise 5.9 says at the end, "Your method should print nothing if the empty string ("") is passed." But this text does not make sense for this problem, because the method accepts an int parameter, not a string. This text should be disregarded. (thanks to Richie Sweeney)
• p523, Ch. 7: Exercise 7.6 stdev has the wrong formula for the standard deviation due to a printing error. The formula should be:
  
  (thanks to James Livingston)
• p549, Ch. 8: The text, "A Point reference variable named p is created," should read, "A Point reference variable named p1 is created." (thanks to Timur Rikhsiev)
• p805, Ch. 12: In the code for the explore method, there is a missing right curly brace just before the line that says "return false". The complete code sample should be:

  private static boolean explore(Board b, int col) {
      if (col > b.size()) {
          return true;
      } else {
          for (int row = 1; row <= b.size(); row++) {
              if (b.isSafe(row, col)) {
                  b.place(row, col);
                  if (explore(b, col + 1)) {
                      return true;
                  }
                  b.remove(row, col);
              }
          }
          return false;
      }
  }
  

  (Thanks to Cheng Xing)

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