O

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OAEP padding (PKCS#1 standard) 2nd
OAEPParameterSpec class
Object class
        class hierarchy root 2nd
        important methods
                clone( ) 2nd
                compareTo( )
                equals( )
                hashCode)
                toString( )
        notify( )
        wait( ) 2nd
object creation operator [See new operator]
object identifier (OID)
object literals
object member access operator (.) 2nd
object persistence
        JavaBeans
        serialization
object serialization [See serialization]
object-oriented classes
       nested types
                local classes
object-oriented programming
        abstract classes and methods
        class definitions
        classes
        creating and initializing objects
                defining a constructor
                defining multiple constructors
                field defaults and initializers
                invoking one constructor from another 2nd
        data hiding and encapsulation
                access control
                data accessor methods
        definitions of terms
        destroying and finalizing objects
                finalizers
                garbage collection
                memory leaks
        fields and methods
                class fields
                class methods
                field declarations
                instance fields
                instance methods
                System.out.println( )
        interfaces
                abstract classes vs.
                constants and
                implementing
                marker
        Java vs. C/C++
        modifiers, summary of
        nested types
                anonymous classes
                how they work
                nonstatic member classes
        Object methods
        subclasses and inheritance
                constructor chaining and the default constructor
                extending a class
                hiding superclass fields
                overriding superclass methods
                subclass constructors
                superclasses, Object and class hierarchy
Object... variable length argument list
ObjectInput interface
ObjectInputStream class 2nd
        enableResolveObject( )
        readStreamHeader( )
ObjectInputValidation class 2nd
ObjectOutput interface
ObjectOutputStream class 2nd 3rd
        enableReplaceObject( )
ObjectOutputStream.PutField class
objects 2nd [See also object-oriented programming]
        AccessibleObject class
        arrays as
        as operand type
        classes vs.
        collections of
                converting to and from arrays
        comparing
        converting arrays to
        converting to strings
        copying
        creating and initializing 2nd
                defining a constructor
                expression statements, using
                instance initializers
                invoking one constructor from another
                multiple constructors
                new operator, using
        defined
        exception
        information about, obtaining with instanceof
        instanceof operator, using with
        InvalidObjectException 2nd
        locking 2nd
        manipulating by reference
        NullPointerException
        Object class
       serializing/deserializing [See serialization]
        SignedObject class
        state of, in instance fields
        strings as
        type defined by class or interface
        using
        waiting threads, list of
ObjectStreamClass class
ObjectStreamConstants interface
ObjectStreamException
ObjectStreamField class
Observable class
Observer interface
octal numbers
        Integer type conversions
        Long type conversions
        Short type conversions
of( )
        EnumSet class
        UnicodeBlock class
offer( ) (Queue)
offsetByCodePoints( )
        Character class
        String class
OID (object identifier)
oldjava interpreter
oldjavaw interpreter
on( )
        DigestInputStream class
        DigestOutputStream class
on-demand type imports
        naming conflicts and shadowing
onMalformedInput( )
onUnmappableCharacter( )
OO [See object-oriented programming]
open ( )
        connected SocketChannel, creating
        DatagramChannel class
        Pipe class
        unconnected SocketChannel, creating
openConnection( )
        URL class 2nd 3rd
openStream( ) (URL)
operands
        evaluation by Java interpreter
        list of
        number and type
operating systems
OperatingSystemMXBean interface
operators 2nd
        arithmetic
        assignment
        associativity
        bitwise and shift
        boolean
        characters used as
        comparison
                relational operators
        conditional
        expressions, order of evaluation
        increment and decrement
        instanceof
        listed
        new
        operand number and type
        overloading
        precedence of
        return types
        side effects of
                combination assignment operators
        special (language constructs)
        string concatenation
        ternary
OptionalDataException
OR operator
        (bitwise OR) 2nd
        (boolean OR) 2nd
        = (bitwise OR assignment) operator
        (conditional OR) 2nd
order of evaluation
order( ) (ByteBuffer)
ordinal( ) 2nd
        enumerated types
ordinaryChar( ) (StreamTokenizer)
ordinaryChars( ) (StreamTokenizer)
org.ietf.jgss package
org.w3c.dom package 2nd
org.xml.sax package 2nd
org.xml.sax.ext package
org.xml.sax.helpers package
out of band data, receiving
OutOfMemoryError 2nd
output [See input/output]
OutputKeys class
OutputStream class 2nd
        write( )
OutputStreamWriter class 2nd
OverlappingFileLockException
overlaps( ) (FileLock)
overloaded methods, references to
overloading
        methods
                defining multiple constructors for class
                overriding vs.
        operators
overridden methods
        chaining
        superclass of a containing class
overriding methods 2nd
        abstract
        dynamic method lookup
        field hiding vs.
        final and static method lookup
        inherited methods
        invoking overridden methods
        Object class methods
overview page, javadoc documentation 2nd
        overview doc comment, using