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com.google.common.base (Guava: Google Core Libraries for Java 11.0.1 API)























  
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@ParametersAreNonnullByDefault

Package com.google.common.base

Basic utility libraries and interfaces.

See:


          Description





Interface Summary


FinalizableReference
Implemented by references that have code to run after garbage collection of their referents.


Function<F,T>
Determines an output value based on an input value.


Predicate<T>
Determines a true or false value for a given input.


Supplier<T>
A class that can supply objects of a single type.


 






Class Summary


Ascii
Static methods pertaining to ASCII characters (those in the range of values
 0x00 through 0x7F), and to strings containing such
 characters.


CharMatcher
Determines a true or false value for any Java char value, just as Predicate does
 for any Object.


Charsets
Contains constant definitions for the six standard Charset instances, which are
 guaranteed to be supported by all Java platform implementations.


Defaults
This class provides default values for all Java types, as defined by the JLS.


Enums
Utility methods for working with Enum instances.


Equivalence<T>
A strategy for determining whether two instances are considered equivalent.


Equivalence.Wrapper<T>
Wraps an object so that Equivalence.Wrapper.equals(Object) and Equivalence.Wrapper.hashCode() delegate to an
 Equivalence.


Equivalences
Contains static factory methods for creating Equivalence instances.


FinalizablePhantomReference<T>
Phantom reference with a finalizeReferent() method which a background thread invokes
 after the garbage collector reclaims the referent.


FinalizableReferenceQueue
A reference queue with an associated background thread that dequeues references and invokes
 FinalizableReference.finalizeReferent() on them.


FinalizableSoftReference<T>
Soft reference with a finalizeReferent() method which a background thread invokes after
 the garbage collector reclaims the referent.


FinalizableWeakReference<T>
Weak reference with a finalizeReferent() method which a background thread invokes after
 the garbage collector reclaims the referent.


Functions
Static utility methods pertaining to Function instances.


Joiner
An object which joins pieces of text (specified as an array, Iterable, varargs or even a
 Map) with a separator.


Joiner.MapJoiner
An object that joins map entries in the same manner as Joiner joins iterables and
 arrays.


Objects
Helper functions that can operate on any Object.


Objects.ToStringHelper
Support class for Objects.toStringHelper(java.lang.Object).


Optional<T>
An immutable object that may contain a non-null reference to another object.


Preconditions
Simple static methods to be called at the start of your own methods to verify
 correct arguments and state.


Predicates
Static utility methods pertaining to Predicate instances.


Splitter
An object that divides strings (or other instances of CharSequence)
 into substrings, by recognizing a separator (a.k.a.


Splitter.MapSplitter
An object that splits strings into maps as Splitter splits
 iterables and lists.


Stopwatch
An object that measures elapsed time in nanoseconds.


Strings
Static utility methods pertaining to String or CharSequence
 instances.


Suppliers
Useful suppliers.


Throwables
Static utility methods pertaining to instances of Throwable.


Ticker
A time source; returns a time value representing the number of nanoseconds
 elapsed since some fixed but arbitrary point in time.


 






Enum Summary


CaseFormat
Utility class for converting between various ASCII case formats.


 



Package com.google.common.base Description



Basic utility libraries and interfaces.

 
This package is a part of the open-source
 Guava libraries.

 
Contents

 String-related utilities

 
 Ascii
 
CaseFormat
 
CharMatcher
 
Charsets
 
Joiner
 
Splitter
 
Strings
 

 Function types

 
 Function,
     Functions
 
Predicate,
     Predicates
 
Equivalence,
     Equivalences
 
Supplier,
     Suppliers
 

 Other

 
 Defaults
 
Enums
 
Objects
 
Optional
 
Preconditions
 
Stopwatch
 
Throwables
 
















  
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Copyright © 2010-2012. All Rights Reserved.

Interface Summary
FinalizableReference	Implemented by references that have code to run after garbage collection of their referents.
Function<F,T>	Determines an output value based on an input value.
Predicate<T>	Determines a true or false value for a given input.
Supplier<T>	A class that can supply objects of a single type.

Class Summary
Ascii	Static methods pertaining to ASCII characters (those in the range of values `0x00` through `0x7F`), and to strings containing such characters.
CharMatcher	Determines a true or false value for any Java `char` value, just as `Predicate` does for any `Object`.
Charsets	Contains constant definitions for the six standard `Charset` instances, which are guaranteed to be supported by all Java platform implementations.
Defaults	This class provides default values for all Java types, as defined by the JLS.
Enums	Utility methods for working with `Enum` instances.
Equivalence<T>	A strategy for determining whether two instances are considered equivalent.
Equivalence.Wrapper<T>	Wraps an object so that `Equivalence.Wrapper.equals(Object)` and `Equivalence.Wrapper.hashCode()` delegate to an `Equivalence`.
Equivalences	Contains static factory methods for creating `Equivalence` instances.
FinalizablePhantomReference<T>	Phantom reference with a `finalizeReferent()` method which a background thread invokes after the garbage collector reclaims the referent.
FinalizableReferenceQueue	A reference queue with an associated background thread that dequeues references and invokes `FinalizableReference.finalizeReferent()` on them.
FinalizableSoftReference<T>	Soft reference with a `finalizeReferent()` method which a background thread invokes after the garbage collector reclaims the referent.
FinalizableWeakReference<T>	Weak reference with a `finalizeReferent()` method which a background thread invokes after the garbage collector reclaims the referent.
Functions	Static utility methods pertaining to `Function` instances.
Joiner	An object which joins pieces of text (specified as an array, `Iterable`, varargs or even a `Map`) with a separator.
Joiner.MapJoiner	An object that joins map entries in the same manner as `Joiner` joins iterables and arrays.
Objects	Helper functions that can operate on any `Object`.
Objects.ToStringHelper	Support class for `Objects.toStringHelper(java.lang.Object)`.
Optional<T>	An immutable object that may contain a non-null reference to another object.
Preconditions	Simple static methods to be called at the start of your own methods to verify correct arguments and state.
Predicates	Static utility methods pertaining to `Predicate` instances.
Splitter	An object that divides strings (or other instances of `CharSequence`) into substrings, by recognizing a separator (a.k.a.
Splitter.MapSplitter	An object that splits strings into maps as `Splitter` splits iterables and lists.
Stopwatch	An object that measures elapsed time in nanoseconds.
Strings	Static utility methods pertaining to `String` or `CharSequence` instances.
Suppliers	Useful suppliers.
Throwables	Static utility methods pertaining to instances of `Throwable`.
Ticker	A time source; returns a time value representing the number of nanoseconds elapsed since some fixed but arbitrary point in time.