A B C D E F G H I J K L M N O P Q R S T U V W X Y Z _

## Q

QName - Class in javax.xml.namespace
  `QName` represents a qualified name as defined in the XML specifications: XML Schema Part2: Datatypes specification, Namespaces in XML, Namespaces in XML Errata.
QName(String, String) - Constructor for class javax.xml.namespace.QName
  `QName` constructor specifying the Namespace URI and local part.
QName(String, String, String) - Constructor for class javax.xml.namespace.QName
  `QName` constructor specifying the Namespace URI, local part and prefix.
QName(String) - Constructor for class javax.xml.namespace.QName
  `QName` constructor specifying the local part.
QOP - Static variable in class javax.security.sasl.Sasl
  The name of a property that specifies the quality-of-protection to use.
QuadCurve2D - Class in java.awt.geom
  The `QuadCurve2D` class defines a quadratic parametric curve segment in `(x,y)` coordinate space.
QuadCurve2D() - Constructor for class java.awt.geom.QuadCurve2D
  This is an abstract class that cannot be instantiated directly.
QuadCurve2D.Double - Class in java.awt.geom
  A quadratic parametric curve segment specified with `double` coordinates.
QuadCurve2D.Float - Class in java.awt.geom
  A quadratic parametric curve segment specified with `float` coordinates.
quadrantRotate(int) - Method in class java.awt.geom.AffineTransform
  Concatenates this transform with a transform that rotates coordinates by the specified number of quadrants.
quadrantRotate(int, double, double) - Method in class java.awt.geom.AffineTransform
  Concatenates this transform with a transform that rotates coordinates by the specified number of quadrants around the specified anchor point.
quadTo(double, double, double, double) - Method in class java.awt.geom.Path2D.Double
  Adds a curved segment, defined by two new points, to the path by drawing a Quadratic curve that intersects both the current coordinates and the specified coordinates `(x2,y2)`, using the specified point `(x1,y1)` as a quadratic parametric control point.
quadTo(double, double, double, double) - Method in class java.awt.geom.Path2D.Float
  Adds a curved segment, defined by two new points, to the path by drawing a Quadratic curve that intersects both the current coordinates and the specified coordinates `(x2,y2)`, using the specified point `(x1,y1)` as a quadratic parametric control point.
quadTo(float, float, float, float) - Method in class java.awt.geom.Path2D.Float
  Adds a curved segment, defined by two new points, to the path by drawing a Quadratic curve that intersects both the current coordinates and the specified coordinates `(x2,y2)`, using the specified point `(x1,y1)` as a quadratic parametric control point.
quadTo(double, double, double, double) - Method in class java.awt.geom.Path2D
  Adds a curved segment, defined by two new points, to the path by drawing a Quadratic curve that intersects both the current coordinates and the specified coordinates `(x2,y2)`, using the specified point `(x1,y1)` as a quadratic parametric control point.
QualifiedNameable - Interface in javax.lang.model.element
  A mixin interface for an element that has a qualified name.
QUARTER_OF_YEAR - Static variable in class java.time.temporal.IsoFields
  The field that represents the quarter-of-year.
QUARTER_YEARS - Static variable in class java.time.temporal.IsoFields
  Unit that represents the concept of a quarter-year.
QUARTO - Static variable in class java.awt.PageAttributes.MediaType
  The MediaType instance for Quarto, 215 x 275 mm.
QUARTO - Static variable in class javax.print.attribute.standard.MediaSize.Other
  Specifies the quarto size, 8.5 inches by 10.83 inches.
QUARTO - Static variable in class javax.print.attribute.standard.MediaSizeName
  quarto size .
query(TemporalQuery<R>) - Method in interface java.time.chrono.ChronoLocalDate
  Queries this date using the specified query.
query(TemporalQuery<R>) - Method in interface java.time.chrono.ChronoLocalDateTime
  Queries this date-time using the specified query.
query(TemporalQuery<R>) - Method in interface java.time.chrono.ChronoZonedDateTime
  Queries this date-time using the specified query.
query(TemporalQuery<R>) - Method in interface java.time.chrono.Era
  Queries this era using the specified query.
query(TemporalQuery<R>) - Method in enum java.time.DayOfWeek
  Queries this day-of-week using the specified query.
query(TemporalQuery<R>) - Method in class java.time.Instant
  Queries this instant using the specified query.
query(TemporalQuery<R>) - Method in class java.time.LocalDate
  Queries this date using the specified query.
query(TemporalQuery<R>) - Method in class java.time.LocalDateTime
  Queries this date-time using the specified query.
query(TemporalQuery<R>) - Method in class java.time.LocalTime
  Queries this time using the specified query.
query(TemporalQuery<R>) - Method in enum java.time.Month
  Queries this month-of-year using the specified query.
query(TemporalQuery<R>) - Method in class java.time.MonthDay
  Queries this month-day using the specified query.
query(TemporalQuery<R>) - Method in class java.time.OffsetDateTime
  Queries this date-time using the specified query.
query(TemporalQuery<R>) - Method in class java.time.OffsetTime
  Queries this time using the specified query.
query(TemporalQuery<R>) - Method in interface java.time.temporal.TemporalAccessor
  Queries this date-time.
query(TemporalQuery<R>) - Method in class java.time.Year
  Queries this year using the specified query.
query(TemporalQuery<R>) - Method in class java.time.YearMonth
  Queries this year-month using the specified query.
query(TemporalQuery<R>) - Method in class java.time.ZonedDateTime
  Queries this date-time using the specified query.
query(TemporalQuery<R>) - Method in class java.time.ZoneOffset
  Queries this offset using the specified query.
Query - Class in javax.management
  Constructs query object constraints.
Query() - Constructor for class javax.management.Query
  Basic constructor.
QUERY_STRING - Static variable in interface javax.xml.ws.handler.MessageContext
  Standard property: Query string for request.
QueryEval - Class in javax.management
  Allows a query to be performed in the context of a specific MBean server.
QueryEval() - Constructor for class javax.management.QueryEval
QueryExp - Interface in javax.management
  Represents relational constraints similar to database query "where clauses".
queryFrom(TemporalAccessor) - Method in interface java.time.temporal.TemporalQuery
  Queries the specified temporal object.
queryMBeans(ObjectName, QueryExp) - Method in interface javax.management.MBeanServer
  Gets MBeans controlled by the MBean server.
queryMBeans(ObjectName, QueryExp) - Method in interface javax.management.MBeanServerConnection
  Gets MBeans controlled by the MBean server.
queryMBeans(ObjectName, MarshalledObject, Subject) - Method in interface javax.management.remote.rmi.RMIConnection
  Handles the method `MBeanServerConnection.queryMBeans(ObjectName, QueryExp)`.
queryMBeans(ObjectName, MarshalledObject, Subject) - Method in class javax.management.remote.rmi.RMIConnectionImpl
queryMBeans(ObjectName, MarshalledObject, Subject) - Method in class javax.management.remote.rmi.RMIConnectionImpl_Stub
queryNames(ObjectName, QueryExp) - Method in interface javax.management.MBeanServer
  Gets the names of MBeans controlled by the MBean server.
queryNames(ObjectName, QueryExp) - Method in interface javax.management.MBeanServerConnection
  Gets the names of MBeans controlled by the MBean server.
queryNames(ObjectName, MarshalledObject, Subject) - Method in interface javax.management.remote.rmi.RMIConnection
  Handles the method `MBeanServerConnection.queryNames(ObjectName, QueryExp)`.
queryNames(ObjectName, MarshalledObject, Subject) - Method in class javax.management.remote.rmi.RMIConnectionImpl
queryNames(ObjectName, MarshalledObject, Subject) - Method in class javax.management.remote.rmi.RMIConnectionImpl_Stub
QUESTION_DIALOG - Static variable in class javax.swing.JRootPane
  Constant used for the windowDecorationStyle property.
QUESTION_MESSAGE - Static variable in class javax.swing.JOptionPane
  Used for questions.
Queue<E> - Interface in java.util
  A collection designed for holding elements prior to processing.
QUEUED_IN_DEVICE - Static variable in class javax.print.attribute.standard.JobStateReason
  The job has been forwarded to a device or print system that is unable to send back status.
QueuedJobCount - Class in javax.print.attribute.standard
  Class QueuedJobCount is an integer valued printing attribute that indicates the number of jobs in the printer whose `JobState` is either PENDING, PENDING_HELD, PROCESSING, or PROCESSING_STOPPED.
QueuedJobCount(int) - Constructor for class javax.print.attribute.standard.QueuedJobCount
  Construct a new queued job count attribute with the given integer value.
quietlyComplete() - Method in class java.util.concurrent.ForkJoinTask
  Completes this task normally without setting a value.
quietlyCompleteRoot() - Method in class java.util.concurrent.CountedCompleter
  Equivalent to `getRoot().quietlyComplete()`.
quietlyInvoke() - Method in class java.util.concurrent.ForkJoinTask
  Commences performing this task and awaits its completion if necessary, without returning its result or throwing its exception.
quietlyJoin() - Method in class java.util.concurrent.ForkJoinTask
  Joins this task, without returning its result or throwing its exception.
quote(String) - Static method in class java.util.regex.Pattern
  Returns a literal pattern `String` for the specified `String`.
quote(String) - Static method in class javax.management.ObjectName
  Returns a quoted form of the given String, suitable for inclusion in an ObjectName.
quoteChar(int) - Method in class java.io.StreamTokenizer
  Specifies that matching pairs of this character delimit string constants in this tokenizer.
quoteReplacement(String) - Static method in class java.util.regex.Matcher
  Returns a literal replacement `String` for the specified `String`.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z _

Submit a bug or feature
For further API reference and developer documentation, see Java SE Documentation. That documentation contains more detailed, developer-targeted descriptions, with conceptual overviews, definitions of terms, workarounds, and working code examples.
Copyright © 1993, 2026, Oracle and/or its affiliates. All rights reserved. Use is subject to license terms. Also see the documentation redistribution policy.