Welcome to the Core Java Bug List

Second Edition Bugs

Bugs in both editions are denoted by page numbers p2/p1, where p2 is the page number in the second edition and p1 the page number in the first edition.

Page 6
Change http://www.cs.princeton.edu/~felton to http://www.cs.princeton.edu/sip. The link http://ferret.lmh.ox.ac.uk/~david/java/bugs/ is no longer available.
Page 7
Change http://java.sun.com:80/java.sun.com/sfaq/index.html to http://java.sun.com/sfaq/index.html
Page 9
First paragraph: "third-part" should be "third-party"
25
'Go to \WIN95NT\WINEDITA' should be 'Go to \WIN95NT\WINEDIT\WINEDITA'.
Page 25
There is no separate doc directory. The documentation for RMI and JDBC has been integrated into the class tree. There is no api directory either. JavaSoft didn't want us to distribute it. The same information is available, in more convenient from, in the class tree extracted with javadoc.
Page 29/29
Change java welcomeapplet.java to javac welcomeapplet.java.
Page 39/38
Change "For example, for WinEdit, chose Project|Compile, then chose Project|Run." to "For example, for WinEdit, chose Project|Compile, then chose Project|Execute."
Page 52
Eliminate: "In fact, comments do not nest in Java." This should be a note at the end of the "Comments" section, as it was in the first edition.
Page 62/60
Change int thirdBit to int fourthBitFromRight.
Page 74/72
The second box of the graph should read "balance = (balance+payment)*(1+interest)"
Page 74/72
The "A" in "A while loop tests at the top" should not be in the Courier font.
Page 81/80
The Format class on the CD ROM has two bugs. Formatting the most extreme negative number (-9223372036854775808L) prints with 2 leading minus signs. And printing 0 with a %e or %g format does not work. These are fixed in Format.java
Page 85/83
Change "In our case, since the method belongs to the lotteryOdds class" to "In our case, since the method belongs to the LotteryOdds class"
Page 106/104
Date.parse returns a long, not a void (the number of milliseconds since 1/1/70 00:00 GMT).
Page 111/108
Change: "Please enter the month..." to "Please enter the month you were born, ..."7
Page 112/109
Change "we check the month (d.month())" to "we check the month (d.getMonth())"
Page 118
A constructor is always called with the new keyword." newshould be in Courier font.
Page 136/130
Reverse order of "c:\java\lib\corejava\Console.class" and "c:\java\lib\java\util\Console.class"
Page 147/143
Remove "We did that in the sample code of the preceding section".
Page 164/160
Change "So the //now what comment in..." to "So the //now what? comment in..."
Page 171/167
Change "Probably the most commonly used method of getClass" to "Probably the most commonly used method of the class Class"
Page 211/207
"draws an image" and "draws a scaled image" should be interchanged
Page 229/225
Change setTitle("Panel test") to setTitle("PanelTest")
Page 258
In figure 7-11, remove the arrows TextComponent -> ScrollBar -> List to Label -> Choice -> Checkbox -> Canvas -> Button. (This bug won't die--it was fixed in the second printing of the first edition, but it reemerged in the second edition.)
Page 267/263
Replace new GridLayout(5,4) with new GridLayout(4,4)
Page 281/277
Replace "You will need to tell it the name of the parent window" with "You will need to supply a reference to the parent window".
Page 287/283
change "in the processResults method" to "in the processResult method"
Page 303/299
Both the method mouseMove() and mouseDrag() are missing a return true statement.
Page 303/299
In mouseDrag, replace draw(current) with draw(g, current) (2x)
Page 321/317
public void paint(graphics g)
		Font f = new Font("System", Font.BOLD, 18);
		{  ...
should be 
	public void paint(graphics g)
		{  Font f = new Font("System", Font.BOLD, 18);
		   ...
Page 313/309
The code right below the first and second paragraph, replace vert.setValue(horiz.getValue(), d.height, 0, 400); with vert.setValues(vert.getValue(), d.height, 0, 400);
Page 327/323
The CalculatorApplet.java program doesn't include the import corejava.*, awt.*, and applet.* statements
Page 328/324
For the calculator applet, since the calculator doesn't have a % button, the line in the calculate method 
else if (op == "%") ...
is not needed.
Page 357/353
In Example 8-5: CrawlerApplet.java, in the method "search", the line "AppletContext context = getAppletContext();" should be removed
Page 376/372
Replace Item i = (Item)itemsOrdered.removeElementAt(n);with itemsOrdered.removeElementAt(n); (The method has no return value.)
Page 381/377
Change String s = "149-16-2536" to String s = "987-98-9996"
Page 381
The line e = staff.get(s); // gets harry should read e = (Employee)staff.get(s); // gets harry.
Page 410/404
Change "The first four options are not appropriate" to "The first three options are not appropriate"
Page 410/404
Change "But if the List class is part of the default package" to "But if the LinkedList class is part of the default package"
Page 414/408
The computation of the future values had the year and the interest rate swapped. Replace balance[i][j] = futureValue(10000, 10 + 10 * i, 5 + 0.5 * j); with balance[i][j] = futureValue(10000, 5 + 0.5 * j, 10 + 10 * i); . The correct values of the table are then: 
5.00%     5.50%     6.00%     6.50%     7.00%     7.50%
 10  16470.09  17310.76  18193.97  19121.84  20096.61  21120.65
 20  27126.40  29966.26  33102.04  36564.47  40387.39  44608.17
 30  44677.44  51873.88  60225.75  69917.98  81164.97  94215.34
 40  73584.17  89797.65 109574.54 133696.02 163114.11 198988.89
 50 121193.83 155446.59 199359.55 255651.37 327804.14 420277.39
Jay Freedman, the discoverer of this bug, writes: "Interestingly, the results of the erroneous version are similar to (at least, the same order of magnitude as) those from the correct version. Beware of output that 'looks' correct!"
Page 458
Change "or 1 to skip a number of bytes" to "or one to skip a number of bytes"
Page 535/531
The program should use notifyAll instead of notify.
Page 546/542
Change g.drawImage(image, -i * imageHeight, imageCount, null) with g.drawImage(image, 0, -i * imageHeight / imageCount, null)
Page 546/542-543
In the class definition(s) of Animation, replace extends Runnable with implements Runnable
Page 565
Remove "public" from the front of "class ThreadedEchoHandler"
Page 566/562
Replace "client'(space)s" with "client's" and replace "Let'(line break)s" with "Let's
Page 575/571
Change os.writeBytes to out.writeBytes (2x)
Page 592
Change San Jose to San+Jose
Page 613
There should be a comma after NUMERIC(m, n). The or should not be set in Courier (2 x).
Page 635
The line 
   ResultSet rs = md.getTables("", null, "%", types)
should be changed to 
   ResultSet rs = md.getTables(null, "%", "%", types)
to be consistent with the sample program. Actually, these parameters depend somewhat on your SQL server.
Page 656
Change the URL from "" to "rmi://" with the 1.1 Beta version of RMI.

First Edition Bugs

Page 24*
Replace SET CLASSPATH=C:\java\lib;C:\CoreJavaBook with SET CLASSPATH=C:\java\lib;.;C:\CoreJavaBook
Page 25
At the end of second paragraph, add "Use the File | OpenFile command and select the file tree.html in the \java\api directory."
Page 36*
Replace Void Main with void main to match the figures
Page 39
Remove import java.net.*;
Page 39
Replace method "action" with 
   public boolean action(Event evt, Object arg)
   {  if (arg.equals("Open"))
      {  FileDialog d = new FileDialog(this,
            "Open image file", FileDialog.LOAD);
         d.setFile("*.gif");
         d.setDirectory(lastDir);
         d.show();
         String f = d.getFile();
         lastDir = d.getDirectory();
         if (f != null)
            image = Toolkit.getDefaultToolkit().getImage(lastDir + f);
         repaint();
      }
      else if(arg.equals("Exit")) System.exit(0);
      else return false;
      return true;
   }
where lastDir is a private variable of ImageViewer.
Page 48
Replace \CoreJavaBook\ch2\FirstSample directory. with \CoreJavaBook\ch3\FirstSample directory.
Page 49
Replace "Thus you must have a main method (function) for your code to compile." with "Thus you must have a main method (function) for your code to execute."
Page 53
Replace "(7 significant decimal digits)" with "(6-7 significant decimal digits)"
Page 59*
Replace 3 !==7 with 3 != 7
Page 60*
Replace int thirdBit = (foo&8)/8: with int thirdBit = (foo&8)/8;
Page 60
Replace "gives you a one if the third bit in the binary representation of foo is on," with "gives you a one if the fourth bit from the right in the binary representation of foo is on,"
Page 62*
Replace Expletive: with Expletive;
Page 62
Replace string greeting = "Hello"; with String greeting = "Hello";
Page 62
Replace string s = greeting.substring(0, 4) with String s = greeting.substring(0, 4);
Page 63
Replace int n = greeting.length() // is 5. with int n = greeting.length(); // is 5.
Page 66*
Before "Once you have done this...", add
Be sure to add the line 
     import corejava.*;
to every program that utilizes the Console class.
Page 66*
Add the line import corejava.*; before the line class ...
Page 67*
Add the line import corejava.*; before the line class ...
Page 67*
Replace "Your payment is" with "Your payment is "
Page 70
The code should read 
      if (yourSales >= 2*target)
      {   performance = "Excellent";
          bonus = 1000;
      }
      else if (yourSales >= 1.5*target)
      {   performance = "Fine";
          bonus = 500;
      }
      else if (yourSales >= target)
      {   performance = "Satisfactory";
          bonus = 100;
      }
      else
      {   System.out.println("You're fired");
      }
Page 71
Remove C++ note. At the bottom of page 60, add

Selection Operator

The expression 

   condition ? e1 : e2
evaluates to e1 if the condition is true, to e2 otherwise. For example, 
   x < y ? x : y
computes the smaller of x and y.
Page 71*
Add the line import corejava.*; before the line class ...
Page 73*
Add the line import corejava.*; before the line class ...
Page 75*
Add the line import corejava.*; before the line class ...
Page 76
missing ; after Console.readInt()
Page 80
The Format class on the CD ROM has a bug--formatting 9.999 with "%.2f" shows up as 9.00. This is fixed in Format.java
Page 80*
At the end of the sidebar, add
You must add the line 
     import corejava.*;
to every program that uses the Format class.
Page 82*
Add the line import corejava.*; before the line class ...
Page 88*
Add the line import corejava.*; before the line class ...
Page 100
Replace (Benjamin Cumming, 1994). with (Benjamin Cummings, 1994).
Page 101
At the end of 13th line(Now you can start applying AudioClip methods to meow), add "(Actually, it is a little harder in Java to obtain a real audio clip. Here we just use audio clips to introduce the typical object notation.)"
Page 103
Replace Date preMillenium = new Date(1999,12,31); with Date preMillennium = new Date(99,11,31);
Page 103
Replace Date preMillenium = new Date(1999,12,31,23,59,59); with Date preMillennium = new Date(99,11,31,23,59,59);
Page 105
Add the line import java.util.*; before the line class ...
Page 106
There is a bug on the CD ROM in the default constructor of the Day class. Here is the correct Day.java.
Page 108*
Replace Date with Day
Page 109*
Replace "make a Date object" with "make a Day object"
Page 111
Replace { return name with { return name;
Page 113*
Replace "there are actually five access levels" with "There are actually four access levels". (Note: The private protected attribute is being withdrawn.)
Page 113
The instance fields in "Next, notice that there are three instance fields" should be set in italics.
Page 115
Replace { return name with { return name;
Page 116
Replace "By the way, the function is called getName() because it can't be called name()-" with "We could actually call the method name(), although it would be confusing to have a variable and a method that are called the same."
Page 119
Replace javac Mortgage with java Mortgage
Page 120
Remove package corejava;
Page 121
Replace Date today = new Date() with Day today = new Day()
Page 121
Replace Date preMillenium = new Date(1999,12,31) with Day preMillenium = new Day(1999,12,31)
Page 125
At the bottom of this page, replace int cards; with private int cards;
Page 126
Replace the code final public void fill() with the code at the bottom of this page
Page 143
In the third paragraph, replace "However, staff[0] "forgets" that it refers to a Manager and just considers itself as Employee object." with "However, staff[0] is only considered to be an Employee object by the compiler."
Page 148*
Replace "Java uses the inheritance syntax" with "Java uses the cast syntax"
Page 148
Replace Manager* boss = dynamic_cast<Manager>(staff[1]); with Manager* boss = dynamic_cast<Manager*>(staff[1]);
Page 159
Replace public string powerSource(PoweredVehicle); with public String powerSource(PoweredVehicle);
Page 162
After the first paragraph, add "Tip: Instead of writing x.toString(), you can write "" + x. That expression concatenates the empty string "" with the string representation of x, that is, x.toString(). This trick is a common idiom that you find in many java programs."
Page 172*
Remove the two sentences "To placate the C++ crowd... the same package".
Page 172*
Add a "C++ Note" icon to the paragraph that starts with "As it happens, protected..."
Page 172*
Remove "3. visible to the class and all subclasses" and renumber the remaining lines
Page 177
The second line in the second paragraph, replace "Alternative Window Toolkit or AWT. Even though it is called the "alternative" toolkit, you don't have ..." with "Abstract Window Toolkit or AWT. At one point, it was called the "alternative" window toolkit, but you don't have ... "
Page 182
Replace "How you handle an event is controlled by the handleEvent method in the Event class." with "How you handle an event is controlled by the handleEvent method in the Component class."
Page 183
Replace "you need to override the paint method from the Frame class" with "you need to override the paint method from the Component class"
Page 184
In the second paragraph, replace "Not a Hello, World" with "Not a Hello, World program"
Page 184
On the first line, replace "they are" with "it is"
Page 186
Replace Font(String name, Font property, int size) with Font(String name, int property, int size)
Page 187
Replace cy += fim.stringWidth(s2); with cx += fim.stringWidth(s2);
Page 195
Replace int angle = 30;; with int angle = 30;
Page 195
Replace // opening angle of mouth with // half the opening angle of mouth
Page 197
Replace void draw3dRect(...) with void draw3DRect(...)
Page 200
Add the following to the bottom of this page: "For the alternating rule, a point is inside if an infinite ray with the point as origin crosses the path an odd number of times."
Page 201
Replace int angle = 30;; // opening angle of mouth with int angle = 30; // half the opening angle of mouth
Page 204*
Replace Toolkit.getDefaultToolkit.getImage(name) with Toolkit.getDefaultToolkit().getImage(name)
Page 206
Replace "The tiling occurs in the paint program." with "The tiling occurs in the paint method."
Page 209
In the method paint, replace buffered_image with // buffered_image
Page 209
On the top of the page, repalce for(int j = 0; j <= client_width / image_width; j++) with for(int j = 0; j <= client_height / image_height; j++)
Page 209
Replace "updates the component without erasing the current image." with "updates the component unless overridden, it erases the screen area and calls the paint method."
Page 210
Align text following dx and dy parameters
Page 212*
Replace "Since Frame (indirectly) extends" with "Since Frame indirectly implements"
Page 214
replace java.awt.ImageObserver with java.awt.image.ImageObserver
Page 218
Figure 7-1 has wrong button labels. Figure 7-2 on page 221 has wrong button labels too
Page 219
Replace yellowButton.setBackground(color.yellow); with yellowButton.setBackground(Color.yellow);
Page 221
Replace note on this page with "The add method belongs to the panel, not the layout manager. But the layout manager needs to know about the added items, and, more importantly, the layout directives (such as "North"). It needs that information so it can do the layout. Thus, whenever you add an item to a container, the container passes on the item and any layout directives to the layout manager."
Page 223
In the method "action", replace else return false; with else return super.action(evt, arg);
Page 227
In the method "action", replace else return false; with else return super.action(evt, arg);
Page 231
Replace int hours = Integer.parselnt(hourField.getText().trim()) with int hours = Integer.parseInt(hourField.getText().trim())
Page 231
In the method "action", replace else return false; with else return super.action(evt, arg);
Page 235
Replace the method "getValue()" with 
   public int getValue()
   {  int value;
      try
      {  value = Integer.valueOf(getText().trim()).intValue();
      }
      catch(NumberFormatException e)
      {  value = 0;
      }
      return value;
   }
Page 243
Replace Panel p; with 
   Panel p = new Panel();
   p.setLayout(new FlowLayout());
Page 250
In the second paragraph, replace "parameters that take the number of items ..." with "a parameter that takes the number of items ..."
Page 254*
Remove the arrows TextComponent -> ScrollBar -> List to Label -> Choice -> Checkbox -> Canvas -> Button
Page 254
Replace panel.addLayout(new CardLayout()); with panel.setLayout(new CardLayout());
Page 260
Replace 'and "Dialog".' with 'and "Preferences".'
Page 260
Replace 
   {  if(arg.equals("<"))
         layout.next(cards));
      else if ...
   }
with 
   {  if(arg.equals("<"))
         layout.previous(cards));
      else if ...
   }
Page 262
In the class SimpleDialog, remove 
   Panel p = new Panel();
   p.add(new Button("OK"));
   add("south", p);
Page 264
Add line import corejava.*; after the first line
page 265
Replace 
   if (op == "+") arg += n;
   else if (op == "-") arg -= n;
   else if (op == "*") arg *= n;
   else if (op == "/") arg /= n;
   else if (op == "%") arg %= n;
   else if (op == "=") arg = n;
with 
   if (op.equals("+")) arg += n;
   else if (op.equals("-")) arg -= n;
   else if (op.equals("*")) arg *= n;
   else if (op.equals("/")) arg /= n;
   else if (op.equals("%")) arg %= n;
   else if (op.equals("=")) arg = n;
Page 266
The text beneath figure 7-17, replace "the list box spans three columns," with "the list box spans three rows,"
Page 266
The text beneath figure 7-17, replace "and the text field at the bottom spans three fields." with "and the text field at the bottom spans three columns."
Page 267
The second line from the end, replace "then the area never grows beyond its initial size in that direction." with "then the area never grows or shrinks beyond its initial size in that direction."
Page 269*
The program has a glitch in the constructor. It also doesn't actually show the font in the sample line. The file FontDialog.java fixes these blemishes.
Page 270
At the bottom of this page, replace int weightx, weighty with double weightx, weighty
Page 270
Replace add(sample, gbl, gbc, 0, 3, 4, 1); with add(sample, gbl, gbc, 0, 3, 3, 1);
Page 271
Add panel.add(ok); in front of the last line
Page 275
Remove if(n == 0) return;
Page 278
Replace if(arg.equals("OK")) dispose(); with if(arg.equals("Ok")) dispose();
Page 280
In method "handleEvent", replace System.exit(0); with dispose();
Page 282
Replace if(arg.equals("OK") with if(arg.equals("Ok")
Page 282
The first line, replace ConnectInfo defaults = new UserInfo(defaultName, ""); with ConnectInfo defaults = new ConnectInfo(defaultName, "");
Page 287
The top part of this page should read 
   FileDialog d = new FileDialog(parent, "Save note file", FileDialog.SAVE);
The third argument is either LOAD or SAVE. Set the directory. 
   d.setDirectory(".");
If you have a default file name that you expect the user to choose, supply it here. 
   d.setFile(filename);
2. Then show the dialog box. 
   d.show();
Page 287
Replace if (d != 0) ... with if (filename != null) ...
Page 287
Add this line "This feature does not currently work." after the line "sets the initial file mask for the file dialog."
Page 290
In the note, replace method with // method
Page 297
The Parameters for KeyUp, replace "key the key that is pressed" with "key the key that is released"
Page 304
At the bottom of this page, replace public boolean handleEvent(Event e) with public boolean handleEvent(Event evt)
Page 306
The method setPageIncrement(int l) should return void. Also at the end of next paragraph, add "This method does not currently work correctly on all platforms."
Page 309
In the first paragraph, replace WINDOW_MOVE with WINDOW_MOVED
Page 309
The code right below the first paragraph, replace Event.MOVE_EVENT with Event.WINDOW_MOVED
Page 319
In the first paragraph, at the end of "You need to quit and restart Netscape to reload the new version of the applet.", add "You can avoid this problem by setting both the disk and memory cache size to 0, but then performance suffers." (Note by Cay: I think this is an urban legend--setting the cache size to 0 doesn't seem to work.)
Page 324
Replace 
   if (op == "+") arg += n;
   else if (op == "-") arg -= n;
   else if (op == "*") arg *= n;
   else if (op == "/") arg /= n;
   else if (op == "%") arg %= n;
   else if (op == "=") arg = n;
with 
   if (op.equals("+")) arg += n;
   else if (op.equals("-")) arg -= n;
   else if (op.equals("*")) arg *= n;
   else if (op.equals("/")) arg /= n;
   else if (op.equals("%")) arg %= n;
   else if (op.equals("=")) arg = n;
Page 328
The font used for the heading of the section on the NAME tag should be a plain, upper-case italic, NOT a bold, mixed-case italic.
Page 334
Replace the second import java.awt.*;(on top and bottom part of this page) with import java.applet.*;
Page 334
Replace &ltAPPLET CODE="FontTestApplet.class WIDTH = 200 HEIGHT = 200> with &ltAPPLET CODE="FontTestApplet.class" WIDTH = 200 HEIGHT = 200>
Page 336
Move the instance variables at the front of the class "Chart" to the end of the class. Also replace 
   double values[];
   String names[];
   String title;
with 
   private double[] values;
   private String[] names;
   private String title;
Page 339
Replace class CalculatorApplet extends Applet with class PopupCalculatorApplet extends Applet
Page 344
Replace System.out.println(e.getClass().getName()); with System.out.println(a.getClass().getName());
Page 345
The second line from the end, replace "and you many not have seen the relevant tags." with "and you may not have seen the relevant tags."
Page 351
Replace "As we said, we do not want to get into the details about threads." with "As we said, we do not want to get into the details about threads and the Runnable interface. See chapter 12 for more information."
Page 351
Replace class CrawlerApplet extends Applet with class CrawlerApplet extends Applet implements Runnable
Page 351
Replace method "start" with 
   public void start()
   {  if(runner != null && runner.isAlive())
         runner.resume();
      else if(runner.isAlive())
         runner.resume();
   }
Page 353
In the method destroy(), replace runner.resume(); with runner.stop();
Page 357
In the middle of this page, replace "In this example, we just reuse the retirement calculator." with "In this example, we just reuse the calculator."
Page 366
In method action, remove the first "else if" clause.
Page 370
In the third paragraph, replace "This gives the user completely safe set, append, and get array access methods." with "This gives the user completely safe set, append, and get vector access methods."
Page 377
Replace e = (Employee)employee.get(s); with e = staff.get(s);
Page 383
Replace class PartNumber() with class PartNumber
page 383
Replace return 13 * description.hashValue() + 17 * version; with return 13 * description.hashCode() + 17 * version;
Page 384
In the first paragraph, replace "then a test like the one below..." with "then a lookup like the one below..."
Page 386
Replace two API descriptions elements() with Enumeration elements()
Page 393
In the method HashSetTest(), "for" loop body name.addItem(f[i]); needs to be indented
Page 396
Replace s1.reset(); with a.reset();
Page 396
Replace Employee e = (Employee)s1.currentElement(); with Employee e = (Employee)a.currentElement();
Page 397
Remove the semicolon at the last line
Page 403
Comment in code saying "do something with ob;" should say "do something with o;"
Page 403
Replace return current != 0; with return current != NULL;
Page 404
The call data.reset() in "remove()" of Queue is unnecessary
Page 404
The private protected mechanism is no longer used in Java
Page 413
In the PascalCanvas constructor, the "if..else if..else.." block in inner for loop need to be indented
Page 423
In C++ note, replace "The throws statement is the same as ..." with "The throws specifier is the same as ..."
Page 435
The last comment in the example code should be "// stack was empty"
Page 437*
Indent the paragraph starting with "For example, look at our Format.java file..."
Page 438
Replace "Here is the code for the MessageCracker class" with "Here is the code for the MessageCrackerTest class"
page 439
At the bottom of this page, in the end of "Netscape has a nice 'Java Console' (available in the Options menu) that displays all the strings sent to System.out.", add "(see figure 10-4)"
Page 441
Replace "Here is the code for the DebugWin class." with "Here is the code for the DebugWinTest class."
Page 443*
The program listing is wrong. Please substitute the file \CoreJavaBook\ch10\BuggyButtonTest\ButtonTest.java. Great--a bug in the debugging chapter...
Page 443
In the method "action", replace else return false; with else return super.action(evt, arg);
Page 445
In the "where" command description, replace "|" with "or"
Page 448
In the last paragraph, replace "Setting breakpoints in an action statement works pretty well." with "Setting breakpoints in an action method works pretty well."
Page 456
In the second paragraph, replace "FileInputStream and FileOutputStream give you an input stream ..." with "FileInputStream and FileOutputStream give you input and output streams ..."
Page 458
At the very bottom of this page, replace "Java has no method to support that." with "Use writeChars for that purpose."
Page 463
Below the line java.io.PushbackInputStream, add line

. PushbackInputStream(InputStream in)

Page 464
Replace BufferedOutputStream(OutputStream in) with BufferedOutputStream(OutputStream out)
Page 464
Replace BufferedInputStream(InputStream in, int n) with BufferedOutputStream(OutputStream out, int n)
Page 466
In the API note for String nextToken(), replace "Throws a NoSuchElementException if the are no more tokens." with "Throws a NoSuchElementException if there are no more tokens."
Page 466
Replace "These three delimiters are used ..." with "These four delimiters are used ..."
Page 468
Replace void readData(Employee[] e, DataInput in) with Employee[] readData(DataInputStream in)
Page 468
In the third paragraph, remove "This also discards the prior contents of e."
page 468
In the method "readData", replace e[i] = new Employee("", 0, null); with e[i] = new Employee();
Page 469
In the first "try" block, add os.close(); at the end, in the second "try" block, add is.close(); at the end
Page 469
In the class "Employee", before the method print(), add public Employee() {}
page 471
Replace the code static String readFixedString(int size, DataInput in) at the bottom of the page with the code on page 474-475
Page 472
In the method "readData", replace DataIO.readFixedString(name, NAME_SIZE, in); with name = DataIO.readFixedString(NAME_SIZE, in);
Page 478
Replace the method "readData" with the one on page 479
Page 478
Replace "take care of their data fields." with "take care of its data fields."
Page 484
The code segment at the top, replace the comment // save parent class with // read(restore) parent class
Page 488
At the bottom of the page, replace salary = readDouble(",salary="); with salary = ps.readDouble(",salary=");
Page 493
In the method writeString, replace print((char)ch); with print(ch);
Page 493
In the method writeString, remove StringBuffer b = new StringBuffer(s.length() + x.length() + 2);
Page 503
The headers for chapter 12, "Multithreading", are all numbered as chapter 10. They should be 12
Page 504
On the CD-ROM, the method bounce() (in ch12\Bounce directory) sleeps for 5 milliseconds, not 10
Page 506
Remove "Before we can get the ball to bounce correctly, we need to make one more change inside the ball's run method. The original bounce code kept checking the system time, and only moved the ball after 5 milliseconds had elapsed."
Page 511
Replace "Figure 10-4 shows the states that ..." with "Figure 12-5 shows the states that ..."
Page 522
Replace class ImageLoader extends Thread with class ImageLoader extends ThreadGroup
Page 527
In the method run(), replace if(to >= from) to++; with if(to == from) to = (to + 1) % Bank.NACCOUNTS;
Page 537
In class "TimerTest", cross out the line Canvas canvas;
Page 540
The code segment in the middle, replace "|" with "}"
Page 543
In the method stop(), replace runner.isActive() with runner.isAlive()
Page 559
Replace s.start(); with t.start();
Page 561
In the class "ThreadedEchoHandler", remove Socket incoming; and int counter; In the end of the class, add 
   private Socket incoming;
   private int counter;
Page 561
In the class "ThreadedEchoHandler", add public in front of ThreadedEchoHandler(Socket i, int c)
Page 561
Add "public" in front of "class ThreadedEchoServer" and move this class to the beginning of the code
Page 565
In the method init(), add line setLayout(new BorderLayout()); at the beginning
Page 565
In the method init(), replace add("South", p); with add("North", p);
Page 565
In the method action, remove the first "else if" clause
Page 566
In the method paint, replace int x = 0; with int x = 80;
Page 567
In the last paragraph, replace "When the user clicks the Send button," with "When the user clicks the Mail button,"
Page 568
Replace "it wil not use port 8189." with "it will not use port 8189."
page 575
In method action, remove the first "else if" clause
Page 577
Cross out the line private int m = 1;
Page 580
The second line from the end, replace "Then the applet shows a list of cities in the list box on the left." with "Then the applet shows a list of cities in the list box on the right."
Page 582
Replace String query = "/Weather_Text/U.S._City_Forecasts" + state; with String query = "/Weather_Text/U.S._City_Forecasts" + "/" + state;
Page 582
Replace int i = line.indexOf('0', 1); with int i = line.indexOf("0/", 1);
Page 583
Replace String query = "/Weather_Text/U.S._City_Forecasts" + state; with String query = "/Weather_Text/U.S._City_Forecasts" + "/" + state;
Page 585
In the last line, replace "between the corporate network to the Internet," with "between the corporate network and the Internet,"
Page 586
In the first paragraph, it's William R. Cheswick, not William K. Cheswick
Page 588
In class ProxySvr, remove int j = 0; and j++;
Page 588
In class ProxySvr, add "public" in front of the "class ProxySvr"
Page 589
In main method, replace if(pos < 0) throw e; with if(pos2 < 0) throw e;
Page 592
In fifth paragraph, replace "Neither C nor Java" with "Neither C nor Perl"
Page 597*
The Perl script has two errors. The code $service_name == "http" should read $service_name eq "http", and likewise $service_name == "gopher" should be $service_name eq "gopher". Of course, a really well-designed language would not lead programmers astray with spurious definitions of == for strings... (see page 65)
Page 613
The Calculator class is on page 264, not 339
Page 696
In the Employee_raiseSalary function, replace ClassEmployee with ClassEmployee*.

*: fixed in second printing.

We would like to thank Kamal Abdali, Richard Adler, Mattas Almgre, Ram Bala, Alexander R. Barwick, Jeff Bensman, Michael Berman, Steve Betz, Eric L. Blair, Dan Buffum, Mark Castillo, Mark Chamness, Steven Chow, Keh-Cheng Chu, Dave Claussen, Gary Clayburg, Michael William Clayton, Marcus Crafter, Anand Daga, Neil Daswani, Chris Dennis, Richard Domer. Scott Dunbar, John Dutton, Carlos Escalante, Bruce Eckel, Bruce Evans, Walt Farrell, Alan C Francis, James Francis, Neil Francis, Jay Freedman, Michael Fuerst, Art Gittleman, David Glaude, Roy Goldman, Aryeh Goldsmith, Adolfo Grego, Chuck Han, William Harris, Erik Hjelmes, Waikwan Hui, Jason Hulance, David C. Hume, Kel Hunt, Shinichi Iwamoto, Thomas Johannesson, Bob Johnsen, Russell Johnston, Mark Kinzie, Henrik Kjell, P.J. LaBrocca, Wilmer Lau, Hai N. Le, April Lee, Joon Suk Lee, Stephen Lee, Jocelyn Legault, Eric Lu, Chinh Mai, Chris Maloof, Alexandre Martin, Douglas Martin, Anthony McCarthy, Donald E. McCollam, Helmut Messerer, Ari Meyer, Sandeep Mitra, Mat Myszewski, Balasubramanian Narasimhan, Eiji Nishihara, Ralf Nolting, Jeff O'Brien, John Olsson, Fred Pantalone Jr., Jim Patrick, Tony Peterman, Vanh Phom, Craig Prescott, Jim Preston, David Prokop, Joe Rantala, Brian Rogoff, Behr de Ruiter, Ursula Rost, Rob Rucker, Fred Ruddock, Daniel Rybowski, Steve Sanders, Matt Sartori, Max Schaible, Warren Seltzer, Scott Shifflett, Bryan Smith, George K. Staropoli, David Starr, Jon Steelman, Paul Stoecker, Leonardo Susatyo, Jonas Svensson, Peter Teitelbaum, Janet Traub, Thomas J. Trop, Brendan Tompkins, Sashank Varma, Steve Viens, Ulrich Vollert, Jon W, Don Weiss, Larry Weiss, John N. Welch, Lau Wilmer, Alice Wong, Hsueh-ching Yen, Rehan Zaidi, Lenny Zeltser, Zhihong Zou, and a number of anonymous contributors for their bug reports!

Last Modified: 25 Jun 1997

If you have found another bugin the book or in our code that is not mentioned in this bug list or the Core Java FAQ, then please send a report. Please do not bug us with JDK or WinEdit problems, though. Unfortunately, we cannot reply personally to each report, but we do read all your comments.

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