Uses of Package
java.util.function
Package
Description
Provides a simple high-level Http server API, which can be used to build
embedded HTTP servers.
Provides for system input and output through data streams,
serialization and the file system.
Provides classes that are fundamental to the design of the Java
programming language.
Classes to support module descriptors and creating configurations of modules
by means of resolution and service binding.
HTTP Client and WebSocket APIs
Defines channels, which represent connections to entities that are capable of
performing I/O operations, such as files and sockets; defines selectors, for
multiplexed, non-blocking I/O operations.
Defines interfaces and classes for the Java virtual machine to access files,
file attributes, and file systems.
Provides the classes and interfaces for the security framework.
Access to date and time using fields and units, and date time adjusters.
Contains the collections framework, some internationalization support classes,
a service loader, properties, random number generation, string parsing
and scanning classes, base64 encoding and decoding, a bit array, and
several miscellaneous utility classes.
Utility classes commonly useful in concurrent programming.
A small toolkit of classes that support lock-free thread-safe
programming on single variables.
Functional interfaces provide target types for lambda expressions
and method references.
Provides the classes and interfaces of
the Java 2 platform's core logging facilities.
Classes for matching character sequences against patterns specified
by regular expressions.
Classes to support functional-style operations on streams of elements, such
as map-reduce transformations on collections.
Provides classes for the secure socket package.
Contains interfaces and classes needed by language runtimes to implement
their own language-specific object models and type conversions.
Classes to support low-level and efficient foreign memory/function access, directly from Java.
Incubating Feature. Will be removed in a future release.
This package contains classes for consuming Flight Recorder data.
Provides interfaces for creating tools, such as a Read-Eval-Print Loop (REPL),
which interactively evaluate "snippets" of Java programming language code.
Provides implementation support for building JShell execution engines.
This package contains classes to control and monitor Flight Recorder over Java Management Extensions (JMX).
This package defines APIs for signing jar files.
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ClassDescriptionRepresents an operation that accepts a single input argument and returns no result.
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ClassDescriptionRepresents an operation upon two operands of the same type, producing a result of the same type as the operands.Represents a predicate (boolean-valued function) of one argument.
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ClassDescriptionRepresents a predicate (boolean-valued function) of two arguments.Represents an operation that accepts a single input argument and returns no result.Represents a function that accepts one argument and produces a result.Represents a supplier of results.
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ClassDescriptionRepresents an operation that accepts a single input argument and returns no result.
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ClassDescriptionRepresents an operation that accepts two input arguments and returns no result.Represents a function that accepts two arguments and produces a result.Represents a function that accepts one argument and produces a result.
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ClassDescriptionRepresents an operation on a single operand that produces a result of the same type as its operand.
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ClassDescriptionRepresents an operation that accepts two input arguments and returns no result.Represents a function that accepts two arguments and produces a result.Represents an operation upon two operands of the same type, producing a result of the same type as the operands.Represents an operation that accepts a single input argument and returns no result.Represents an operation upon two
double
-valued operands and producing adouble
-valued result.Represents an operation that accepts a singledouble
-valued argument and returns no result.Represents a supplier ofdouble
-valued results.Represents a function that accepts one argument and produces a result.Represents an operation upon twoint
-valued operands and producing anint
-valued result.Represents an operation that accepts a singleint
-valued argument and returns no result.Represents a function that accepts an int-valued argument and produces a result.Represents a supplier ofint
-valued results.Represents a function that accepts an int-valued argument and produces a double-valued result.Represents a function that accepts an int-valued argument and produces a long-valued result.Represents an operation on a singleint
-valued operand that produces anint
-valued result.Represents an operation upon twolong
-valued operands and producing along
-valued result.Represents an operation that accepts a singlelong
-valued argument and returns no result.Represents a supplier oflong
-valued results.Represents a predicate (boolean-valued function) of one argument.Represents a supplier of results.Represents a function that produces a double-valued result.Represents a function that produces an int-valued result.Represents a function that produces a long-valued result.Represents an operation on a single operand that produces a result of the same type as its operand. -
ClassDescriptionRepresents an operation that accepts two input arguments and returns no result.Represents a function that accepts two arguments and produces a result.Represents a predicate (boolean-valued function) of two arguments.Represents an operation that accepts a single input argument and returns no result.Represents an operation upon two
double
-valued operands and producing adouble
-valued result.Represents a function that accepts one argument and produces a result.Represents an operation upon twoint
-valued operands and producing anint
-valued result.Represents an operation upon twolong
-valued operands and producing along
-valued result.Represents a predicate (boolean-valued function) of one argument.Represents a supplier of results.Represents a function that accepts two arguments and produces a double-valued result.Represents a function that produces a double-valued result.Represents a function that accepts two arguments and produces an int-valued result.Represents a function that produces an int-valued result.Represents a function that accepts two arguments and produces a long-valued result.Represents a function that produces a long-valued result. -
ClassDescriptionRepresents an operation upon two operands of the same type, producing a result of the same type as the operands.Represents an operation upon two
double
-valued operands and producing adouble
-valued result.Represents an operation upon twoint
-valued operands and producing anint
-valued result.Represents an operation on a singleint
-valued operand that produces anint
-valued result.Represents an operation upon twolong
-valued operands and producing along
-valued result.Represents an operation on a singlelong
-valued operand that produces along
-valued result.Represents an operation on a single operand that produces a result of the same type as its operand. -
ClassDescriptionRepresents an operation that accepts two input arguments and returns no result.Represents a function that accepts two arguments and produces a result.Represents an operation upon two operands of the same type, producing a result of the same type as the operands.Represents a predicate (boolean-valued function) of two arguments.Represents an operation that accepts a single input argument and returns no result.Represents an operation that accepts a single
double
-valued argument and returns no result.Represents a predicate (boolean-valued function) of onedouble
-valued argument.Represents an operation on a singledouble
-valued operand that produces adouble
-valued result.Represents a function that accepts one argument and produces a result.Represents an operation that accepts a singleint
-valued argument and returns no result.Represents a predicate (boolean-valued function) of oneint
-valued argument.Represents an operation on a singleint
-valued operand that produces anint
-valued result.Represents an operation that accepts a singlelong
-valued argument and returns no result.Represents a predicate (boolean-valued function) of onelong
-valued argument.Represents an operation on a singlelong
-valued operand that produces along
-valued result.Represents a predicate (boolean-valued function) of one argument.Represents an operation on a single operand that produces a result of the same type as its operand. -
ClassDescriptionRepresents a function that accepts two arguments and produces a result.Represents a function that accepts one argument and produces a result.Represents a supplier of results.
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ClassDescriptionRepresents an operation that accepts two input arguments and returns no result.Represents a function that accepts two arguments and produces a result.Represents an operation upon two operands of the same type, producing a result of the same type as the operands.Represents an operation that accepts a single input argument and returns no result.Represents an operation upon two
double
-valued operands and producing adouble
-valued result.Represents an operation that accepts a singledouble
-valued argument and returns no result.Represents a function that accepts a double-valued argument and produces a result.Represents a predicate (boolean-valued function) of onedouble
-valued argument.Represents a supplier ofdouble
-valued results.Represents a function that accepts a double-valued argument and produces an int-valued result.Represents a function that accepts a double-valued argument and produces a long-valued result.Represents an operation on a singledouble
-valued operand that produces adouble
-valued result.Represents a function that accepts one argument and produces a result.Represents an operation upon twoint
-valued operands and producing anint
-valued result.Represents an operation that accepts a singleint
-valued argument and returns no result.Represents a function that accepts an int-valued argument and produces a result.Represents a predicate (boolean-valued function) of oneint
-valued argument.Represents a supplier ofint
-valued results.Represents a function that accepts an int-valued argument and produces a double-valued result.Represents a function that accepts an int-valued argument and produces a long-valued result.Represents an operation on a singleint
-valued operand that produces anint
-valued result.Represents an operation upon twolong
-valued operands and producing along
-valued result.Represents an operation that accepts a singlelong
-valued argument and returns no result.Represents a function that accepts a long-valued argument and produces a result.Represents a predicate (boolean-valued function) of onelong
-valued argument.Represents a supplier oflong
-valued results.Represents a function that accepts a long-valued argument and produces a double-valued result.Represents a function that accepts a long-valued argument and produces an int-valued result.Represents an operation on a singlelong
-valued operand that produces along
-valued result.Represents an operation that accepts an object-valued and adouble
-valued argument, and returns no result.Represents an operation that accepts an object-valued and aint
-valued argument, and returns no result.Represents an operation that accepts an object-valued and along
-valued argument, and returns no result.Represents a predicate (boolean-valued function) of one argument.Represents a supplier of results.Represents a function that produces a double-valued result.Represents a function that produces an int-valued result.Represents a function that produces a long-valued result.Represents an operation on a single operand that produces a result of the same type as its operand. -
ClassDescriptionRepresents a function that accepts two arguments and produces a result.
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ClassDescriptionRepresents an operation that accepts a single input argument and returns no result.Represents an operation on a single operand that produces a result of the same type as its operand.
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ClassDescriptionRepresents an operation on a single
int
-valued operand that produces anint
-valued result. -
ClassDescriptionRepresents an operation that accepts a single input argument and returns no result.
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ClassDescriptionRepresents a function that accepts two arguments and produces a result.Represents an operation that accepts a single input argument and returns no result.Represents a function that accepts one argument and produces a result.Represents a supplier of results.
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ClassDescriptionRepresents a function that accepts two arguments and produces a result.Represents an operation that accepts a single input argument and returns no result.
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ClassDescriptionRepresents an operation that accepts a single input argument and returns no result.
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ClassDescriptionRepresents an operation that accepts two input arguments and returns no result.