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Introduction1 The BasicsCompiling a Java ProgramRunning a Java ProgramSetting the Classpath2 Interacting with the EnvironmentGetting Environment VariablesSetting and Getting System PropertiesParsing Command-Line Arguments3 Manipulating StringsComparing StringsSearching For and Retrieving SubstringsProcessing a String One Character at a TimeReversing a String by CharacterReversing a String by WordMaking a String All Uppercase or All LowercaseTrimming Spaces from the Beginning or End of a StringParsing a Comma-Separated String4 Working with Data StructuresResizing an ArrayIterating Over a CollectionCreating a Mapped CollectionSorting a CollectionFinding an Object in a CollectionConverting a Collection to an Array5 Dates and TimesFinding Today's DateConverting Between Date and Calendar ObjectsPrinting Date/Time in a Given FormatParsing Strings into DatesAdding to or Subtracting from a Date or CalendarCalculating the Difference Between Two DatesComparing DatesFinding the Day of Week/Month/Year or Week NumberCalculating Elapsed Time6 Pattern Matching with Regular ExpressionsRegular Expressions in JavaFinding Matching Text Using a Regular ExpressionReplacing Matched TextFinding All Occurrences of a PatternPrinting Lines Containing a PatternMatching Newlines in Text7 NumbersChecking Whether a String Is a Valid NumberComparing Floating Point NumbersRounding Floating Point NumbersFormatting NumbersFormatting CurrenciesConverting an Integer to Binary, Octal, and HexadecimalGenerating Random NumbersCalculating Trigonometric FunctionsCalculating a Logarithm8 Input and OutputReading Text from Standard InputWriting to Standard OutputFormatting OutputOpening a File by NameReading a File into a Byte ArrayReading Binary DataSeeking in a FileReading a JAR or Zip ArchiveCreating a Zip Archive9 Working with Directories and FilesCreating a FileRenaming a File or DirectoryDeleting a File or DirectoryChanging File AttributesGetting the Size of a FileDetermining if a File or Directory ExistsMoving a File or DirectoryGetting an Absolute Filename Path from a Relative Filename PathDetermining if a Filename Path is a File or DirectoryListing a DirectoryCreating a New Directory10 Network ClientsContacting a ServerFinding IP Addresses and Domain NamesHandling Network ErrorsReading TextWriting TextReading Binary DataWriting Binary DataReading Serialized DataWriting Serialized DataReading a Web Page via HTTP11 Network ServersCreating a Server and Accepting a RequestReturning a ResponseReturning an ObjectHandling Multiple ClientsServing HTTP Content12 Sending and Receiving EmailOverview of JavaMail APISending EmailSending MIME EmailReading Email13 Database AccessConnecting to a Database via JDBCSending a Query via JDBCUsing a Prepared StatementRetrieving Results of a QueryUsing a Stored Procedure14 Using XMLParsing XML with SAXParsing XML with DOMUsing a DTD to Verify an XML DocumentCreating an XML Document with DOMTransforming XML with XSLT15 Using ThreadsStarting a ThreadStopping a ThreadWaiting For a Thread to CompleteSynchronizing ThreadsPausing a ThreadLis