"import org.apache.commons.lang.builder.ToStringBuilder"
should be
"import org.apache.commons.lang.builder.ReflectionToStringBuilder"

public void toString() {
ReflectionToStringBuilder.toString(this);
}

Should read:

public String toString() {
return ReflectionToStringBuilder.toString(this);
}

public void toString() {
ReflectionToStringBuilder.toString( this );
}

Should be:

public String toString() {
return ReflectionToStringBuilder.toString( this );
}

"PoliticalCandidate.class.isAssignableFrom(o)"
should read
"PoliticalCandidate.class.isAssignableFrom(o.getClass())"

"PoliticalCandidate pc = (PoliticalCandidate) o;"
should be
"PoliticalCandidate ps = (PoliticalCandidate) o;"

"public int compareTo(Object o) {"
should read
"public int compareTo(Object obj) {"

Existing example:
// Rounding to the nearest hour
Date wokeUp = new Date();
Date wokeUpAround = DateUtils.round ( now, Calendar.HOUR );

Proposed change:
// Rounding to the nearest hour
Date wokeUp = new Date();
Date wokeUpAround = DateUtils.round ( wokeUp, Calendar.HOUR );

String variables = "{45}, {35}, {120}";
int sum = 0;

String[] tokens = StringUtils.split( variables, "," );
for( int i = 0; i < tokens.length; i++ ) {
String numberStr = StringUtils.substringBetween(tokens[i], "{", "}");
Integer number = new Integer( numberStr );
sum += number.intValue();
}

System.out.println( "Variables: " + variables + ", Sum: " + sum
);

The line
String name2Temp=StringUtils.replaceChars(name1,punctuation,"");
should be using name2 instead of name1.

"countMatches(,"futility")"
should be
"countMatches(line,"futility")"

Levenshtein distance between "Word" and "World" is one. Output incorrectly lists Levenshtein distance as 2.

without being defined. The following changes are necessary:

// A Predicate that returns true if the "name" property is not null
Predicate teamNotNull = new BeanPredicate( "name", new NotNullPredicate( ) );

// A Predicate that returns true if the "coach.firstName" property
// is "Tom"
Predicate coachFirstName = new BeanPredicate( "coach.firstName",

new EqualsPredicate("Tom") );

// Tie two Predicates together into an AndPredicate
Predicate validateTeam = new AllPredicate( predicateArray );

should read:

// A Predicate that returns true if the "name" property is not null
Predicate teamNotNull = new BeanPredicate( "name", new NotNullPredicate( ) );

// A Predicate that returns true if the "coach.firstName" property
// is "Tom"
Predicate coachFirstName = new BeanPredicate( "coach.firstName",

new EqualsPredicate("Tom") );

Predicate[] predicateArray = new Predicate[] { teamNotNull, coachFirstName };

// Tie two Predicates together into an AndPredicate
Predicate validateTeam = new AllPredicate( predicateArray );

BasicDynaClass politicianClass =
new BasicDynaClass( "politician", BasicDynaBean.class, props );

should read:

BasicDynaClass politicianClass =
new BasicDynaClass( "politician", BasicDynaBean.class, beanProperties );

Unintended errata: The suit order isn't right for official
Poker or Bridge. To sort in official order, please replace:

private String[] suitOrder = { "S", "C", "D", "H" };

with

private String[] suitOrder = { "C", "D", "H", "S" };

Chapter 5, Recipe 5.4

EarthQuake quake1 = new EarthQuake( );
quake1.setLocation( "Chicago, IL" );
quake1.setIntensity( new Float( 6.4f ) );
quake1.setIntensity( new Float( 634.23f ) ); <--- setDepth
quake1.setTime( new Date( ) );
quakes.add( quake1 );
EarthQuake quake2 = new EarthQuake( );
quake2.setLocation( "San Francisco, CA" );
quake2.setIntensity( new Float( 4.4f ) );
quake2.setIntensity( new Float( 63.23f ) ); <--- setDepth
quake2.setTime( new Date( ) );
quakes.add( quake2 );

public void setIntensity(Float intensity) { this.intensity = intensity; } <---
setIntensity

Chapter 8: "There were significant changes between the pre-release
version of Commons Math and the 1.0 release of Commons Math. All of the
concepts introduced in Chapter 8 of the Commons Cookbook remain valid,
but many of the code examples will not compile as written. You will
need to consult the Commons Math API in the 1.0 release."

There should not be a semi-colon after the line 10.

String expr =
"${opera.name} was composed by ${opera.composer} in ${opera.year}. ";
"This opera has ${opera.acts.size( )} acts, and it is performed in " +
"${opera.language( )}";

Should read:

String expr =
"${opera.name} was composed by ${opera.composer} in ${opera.year}. " +
"This opera has ${opera.acts.size( )} acts, and it is performed in " +
"${opera.language( )}";

"opera.setYear(1791);":

opera.setLanguage("German")

example, which will cause every ball to end up in the Misc-bin. A break
neds to be added after the call to sendBall() as follows:

if( result.booleanValue() == true ) {
sendBall( ball, basket );
}

Should read:

if( result.booleanValue() == true ) {
sendBall( ball, basket );
break;
}

"sendBall(ball, basket );"
should read
"sendBall( ball, bin );"

"FileUtils.sizeOfDirectory()"
should read
"FileUtils.sizeOfDirectory(dir)"

The sentence
"If ALLOW_CIRCULAR_REDIRECTS is set to true,"
should read
"If ALLOW_CIRCULAR_REDIRECTS is set to false,"