mirror of
https://github.com/google/guice.git
synced 2026-10-20 08:18:19 +00:00
Page:
InstanceBindings
Pages
3rdPartyModules
AOP
AppsThatUseGuice
AssistedInject
Avoid Injecting Closable Resources
AvoidCallingProvideMethodsAndInjectConstructors
AvoidConditionalLogicInModules
AvoidStaticState
BeCarefulAboutIoInProviders
BestPractices
BindingAnnotations
BindingResolution
Bindings
Bootstrap
BoundFields
BuiltInBindings
ClassLoading
CustomInjections
CustomScopes
CyclicDependencies
DocumentPublicBindings
DontReuseAnnotations
Errors
ExtendingGuice
ExtensionSPI
ExternalDocumentation
FrequentlyAskedQuestions
GettingStarted
GoogleAppEngine
Grapher
Guice10
Guice20
Guice30
Guice40
Guice41
Guice42
Guice421
Guice422
Guice423
Guice500
Guice501
Guice510
Guice600
Guice700
GuiceDiscussions
GuiceInKotlin
GuicePersist
GuicePersistMultiModules
Home
InjectOnlyDirectDependencies
InjectingProviders
InjectingTheInjector
InjectionPoints
Injections
InspectingModules
InstanceBindings
JPA
JSR330
JustInTimeBindings
KeepConstructorsHidden
LinkedBindings
MentalModel
MinimizeMutability
ModulesShouldBeFastAndSideEffectFree
Motivation
Multibindings
OSGi
OptionalAOP
OrganizeModulesByFeature
PreferAtProvides
ProviderBindings
ProvidesMethods
RestrictedBindingSource
Scopes
ServletExtensionSPI
ServletModule
ServletRegexKeyMapping
Servlets
SpringComparison
Struts2Integration
ThrowingProviders
ToConstructorBindings
Transactions
UntargettedBindings
UseNullable
Clone
7
InstanceBindings
Copybara-Service edited this page 2020-08-06 10:09:21 -07:00
Table of Contents
Instance Bindings
You can bind a type to a specific instance of that type. This is usually only useful for objects that don't have dependencies of their own, such as value objects:
bind(String.class)
.annotatedWith(Names.named("JDBC URL"))
.toInstance("jdbc:mysql://localhost/pizza");
bind(Integer.class)
.annotatedWith(Names.named("login timeout seconds"))
.toInstance(10);
Avoid using .toInstance with objects that are complicated to create, since it
can slow down application startup. You can use an @Provides method instead.
You can also bind constants using bindConstant:
bindConstant()
.annotatedWith(HttpPort.class)
.to(8080);
bindConstant is a shortcut to bind primitive types and other constant types
like String, enum and Class.
-
User's Guide
-
Integration
-
Extensions
-
Internals
-
Releases
-
Community