Releases: google/guava
33.2.0
Android users: Please test recent Guava versions
If you know of Guava Android users who have not yet upgraded to at least release 33.0.0, please encourage them to upgrade, preferably to today's release, 33.2.0. These releases have begun adding Java 8+ APIs to guava-android
. While we don't anticipate problems, we do anticipate that any unexpected problems could force a disruptive rollback. To minimize any disruption, we'd like to catch any such problems early.
Please let us know of any problems you encounter.
Maven
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>33.2.0-jre</version>
<!-- or, for Android: -->
<version>33.2.0-android</version>
</dependency>
Jar files
Guava requires one runtime dependency, which you can download here:
Javadoc
JDiff
Changelog
- Dropped testing for Android versions before Lollipop (API Level 21). Guava may stop working under older versions in the future, or it may have done so already.
- Fixed a GWT compilation breakage under Gradle. (858caf4)
collect
: Made ourCollector
APIs (e.g.,ImmutableList.toImmutableList()
) available inguava-android
. More Java 8 APIs will follow in future releases. (96fca0b)- As always, streams are available to Android code only when that code enables library desugaring or targets a new enough API Level (24 (Nougat) for many stream APIs). (But note that we test only with library desugaring, so we don't currently know if API Level 24 is high enough to use our
Collector
APIs unless you have also enabled library desugaring.) Guava users who avoid theCollector
APIs do not need to meet this requirement.
- As always, streams are available to Android code only when that code enables library desugaring or targets a new enough API Level (24 (Nougat) for many stream APIs). (But note that we test only with library desugaring, so we don't currently know if API Level 24 is high enough to use our
collect
: Fixed a potentialNullPointerException
inImmutableMap.Builder
on a rare code path. (70a9811)net
: AddedHttpHeaders
constantsAd-Auction-Allowed
,Permissions-Policy-Report-Only
, andSec-GPC
. (7dc01ed, 41d0d9a, 38c8017)
33.1.0
Request for Android users
If you know of Guava Android users who have not yet upgraded to at least the previous release 33.0.0, please encourage them to do so. Starting with that version, we are experimenting with including Java 8+ APIs in guava-android
. Before we commit to adding such APIs, we want as much testing as we can get: If we later expose a set of Java 8+ APIs and then discover that they break users, we won't want to remove them, as the removal would break users, too.
Maven
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>33.1.0-jre</version>
<!-- or, for Android: -->
<version>33.1.0-android</version>
</dependency>
Jar files
Guava requires one runtime dependency, which you can download here:
Javadoc
JDiff
Changelog
- Updated our Error Prone dependency to 2.26.1, which includes a JPMS-ready jar of annotations. If you use the Error Prone annotations in a modular build of your own code, you may need to add a
requires
line for them. (d48c6df, c6e91c4) base
: Added aDuration
overload forSuppliers.memoizeWithExpiration
. (76e46ec)base
: Deprecated the remaining two overloads ofThrowables.propagateIfPossible
. They won't be deleted, but we recommend migrating off them. (cf86414)cache
: Fixed a bug that could cause false "recursive load" reports during refresh. (0e1aebf)graph
: Changed the return types oftransitiveClosure()
andreachableNodes()
toImmutable*
types.reachableNodes()
already returned an immutable object (even though that was not reflected in the declared return type);transitiveClosure()
used to return a mutable object. The old signatures remain available, so this change does not break binary compatibility. (09e655f)graph
: Changed the behavior of views returned by graph accessor methods that take a graph element as input: They now throwIllegalStateException
when that element is removed from the graph. (8dca776)hash
: OptimizedChecksum
-based hash functions for Java 9+. (afb35a5)testing
: ExposedFakeTicker
Duration
methods to Android users. (f346bbb)util.concurrent
: Deprecated the constructors ofUncheckedExecutionException
andExecutionError
that don't accept a cause. We won't remove these constructors, but we recommend migrating off them, as users of those classes often assume that instances will contain a cause. (1bb3c43)util.concurrent
: Improved the correctness of racy accesses for J2ObjC users. (d3232b7)
33.0.0
Maven
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>33.0.0-jre</version>
<!-- or, for Android: -->
<version>33.0.0-android</version>
</dependency>
Jar files
Guava requires one runtime dependency, which you can download here:
Javadoc
JDiff
Changelog
- This version of
guava-android
contains some package-private methods whose signature includes the Java 8Collector
API. This is a test to identify any problems before we expose those methods publicly to users. Please report any problems that you encounter. (73dbf7e) - Changed various classes to catch
Exception
instead ofRuntimeException
even when onlyRuntimeException
is theoretically possible. This can help code that throws undeclared exceptions, as some bytecode rewriters (e.g., Robolectric) and languages (e.g., Kotlin) do. (c294c23, 747924e, b2baf48) - Added an
Automatic-Module-Name
tofailureaccess
, Guava's one strong runtime dependency. (280b5d2) reflect
: Inguava-android
only, removedInvokable.getAnnotatedReturnType()
andParameter.getAnnotatedType()
. These methods never worked in an Android VM, and to reflect that, they were born@Deprecated
,@Beta
, and@DoNotCall
. They're now preventing us from rolling out some new Android compatibility testing. This is the only binary-incompatible change in this release, and it should have no effect in practice. Still, we bump the major version number to follow Semantic Versioning. (045cd84)util.concurrent
: Changed our implementations to avoid eagerly initializing loggers during class loading. This can help performance, especially under Android. (4fe1df5)
32.1.3
Maven
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>32.1.3-jre</version>
<!-- or, for Android: -->
<version>32.1.3-android</version>
</dependency>
Jar files
Guava requires one runtime dependency, which you can download here:
Javadoc
JDiff
Changelog
- Changed Gradle Metadata to include dependency versions directly. This may address "Could not find
some-dependency
" errors that some users have reported (which might be a result of users' excludingguava-parent
). (c6d35cf) collect
: ChangedMultisets.unmodifiableMultiset(set).removeIf(predicate)
to throw an exception always, even if nothing matchespredicate
. (61dbccf)graph
: Fixed the behavior ofGraph
/ValueGraph
views for a node when that node is removed from the graph. (9507996)io
: FixedFiles.createTempDir
andFileBackedOutputStream
under Windows services, a rare use case. (The fix actually covers only Java 9+ because Java 8 would require an additional approach. Let us know if you need support under Java 8.) (f87f68c)net
: MadeMediaType.parse
allow and skip over whitespace around the/
and=
separator tokens in addition to the;
separator, for which it was already being allowed. (2786f83)util.concurrent
: TweakedFutures.getChecked
constructor-selection behavior: The method continues to prefer to call constructors with aString
parameter, but now it breaks ties based on whether the constructor has aThrowable
parameter. Beyond that, the choice of constructor remains undefined. (For this and other reasons, we discourage the use ofgetChecked
.) (59cfb22)
32.1.2
Maven
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>32.1.2-jre</version>
<!-- or, for Android: -->
<version>32.1.2-android</version>
</dependency>
Jar files
Guava requires one runtime dependency, which you can download here:
Javadoc
JDiff
Changelog
- Removed the section of our Gradle metadata that caused Gradle to report conflicts with
listenablefuture
. (9ed0fa6) - Changed our Maven project to avoid affecting which version of Mockito our Gradle users see. (71a16d5)
collect
: Under J2CL, exposedImmutableList
andImmutableSet
methodscopyOf
andof
for JavaScript usage. (b41968f)net
: OptimizedInternetDomainName
construction. (3a1d18f, eaa62eb)
32.1.1
Maven
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>32.1.1-jre</version>
<!-- or, for Android: -->
<version>32.1.1-android</version>
</dependency>
Jar files
Guava requires one runtime dependency, which you can download here:
Javadoc
JDiff
Changelog
- Fixed our broken Gradle metadata from 32.1.0. Sorry again for the trouble. If you use Gradle, please still read the release notes from that version: You may still see errors from the new checking that the metadata enables, and the release notes discuss how to fix those errors.
32.1.0
Warning: Our Gradle-metadata version numbers are broken. Read these notes, but upgrade straight to 32.1.2.
We made a mistake in our release script, so the new Gradle metadata (discussed below) has broken version numbers in 32.1.0. Sorry for the trouble and for the need for another quick patch release. We recommend upgrading straight to release 32.1.2, especially if you use Gradle or if you publish a library whose users might use Gradle. Still, read the release notes below if you use Gradle, since the fixed Gradle metadata in 32.1.2 may still require action on your part.
Maven
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>32.1.0-jre</version>
<!-- or, for Android: -->
<version>32.1.0-android</version>
</dependency>
Jar files
Guava requires one runtime dependency, which you can download here:
Javadoc
JDiff
Changelog
Gradle Module Metadata
Warning: We made a mistake in our release script, so this is broken in 32.1.0. We recommend upgrading straight to release 32.1.2, especially if you use Gradle or if you publish a library whose users might use Gradle. Still, read the release notes below if you use Gradle, since the fixed Gradle metadata in 32.1.2 may still require action on your part.
The Gradle team has contributed a metadata file for Guava. If you use Gradle 6 or higher, you will see better handling of two kinds of dependency conflicts, plus another small feature related to our dependencies. As a result of this change, you may see errors, which you can resolve as documented below. If you encounter a problem that isn't documented below, or if the documentation is unclear, please let us know.
If you use Gradle 6 (not 5, not 7+)
You may see an error like this one:
> Could not resolve all artifacts for configuration ':classpath'.
> Could not resolve com.google.guava:guava:30.1-jre.
Required by:
project : > com.google.cloud.tools.jib:com.google.cloud.tools.jib.gradle.plugin:2.8.0 > gradle.plugin.com.google.cloud.tools:jib-gradle-plugin:2.8.0
> The consumer was configured to find a runtime of a library compatible with Java 15, packaged as a jar, and its dependencies declared externally. However we cannot choose between the following variants of com.google.guava:guava:32.1.1-jre:
- androidRuntimeElements
- jreRuntimeElements
All of them match the consumer attributes:
- Variant 'androidRuntimeElements' capabilities com.google.collections:google-collections:32.1.1-jre and com.google.guava:guava:32.1.1-jre and com.google.guava:listenablefuture:1.0 declares a runtime of a library compatible with Java 8, packaged as a jar, and its dependencies declared externally:
If you do, you'll need to add something like this to a place where you configure the Java plugins:
sourceSets.all {
configurations.getByName(runtimeClasspathConfigurationName) {
attributes.attribute(Attribute.of("org.gradle.jvm.environment", String), "standard-jvm")
}
configurations.getByName(compileClasspathConfigurationName) {
attributes.attribute(Attribute.of("org.gradle.jvm.environment", String), "standard-jvm")
}
}
If you see an error about a duplicate ListenableFuture
class
For example:
Execution failed for task ':app:checkDebugDuplicateClasses'.
> A failure occurred while executing com.android.build.gradle.internal.tasks.CheckDuplicatesRunnable
> Duplicate class com.google.common.util.concurrent.ListenableFuture found in modules jetified-guava-32.1.1-android (com.google.guava:guava:32.1.1-android) and jetified-listenablefuture-1.0 (com.google.guava:listenablefuture:1.0)
This appears to be a Gradle bug.
@mathisdt has provided a workaround:
dependencies {
# dependency definitions here ...
modules {
module("com.google.guava:listenablefuture") {
replacedBy("com.google.guava:guava", "listenablefuture is part of guava")
}
}
}
Selecting the appropriate flavor
When Gradle automatically selects the newest version of Guava in your dependency graph, it will now also select the appropriate flavor (-android
or -jre
) based on whether you project targets Android or not. For example, if you depend on 32.1.0-android and 30.0-jre, Gradle will select 32.1.0-jre. This is the version most likely to be compatible with all your dependencies.
In the unusual event that you need to override Gradle's choice of flavor, you can do so as follows:
dependencies.constraints {
implementation("com.google.guava:guava") {
attributes {
attribute(
TargetJvmEnvironment.TARGET_JVM_ENVIRONMENT_ATTRIBUTE,
objects.named(TargetJvmEnvironment, TargetJvmEnvironment.ANDROID))
}
}
}
// If the above leads to a conflict error because there are additional transitive dependencies to Guava, then use:
configurations.all {
resolutionStrategy.capabilitiesResolution.withCapability("com.google.guava:guava") {
select(candidates.find { it.variantName.contains("android") })
}
}
Reporting dependencies that overlap with Guava
If your dependency graph contains the very old google-collections
or the hacky listenablefuture
, Gradle will now report that those libraries contain duplicates of Guava classes. When this happens, you'll need to tell Gradle to select Guava:
configurations.all {
resolutionStrategy.capabilitiesResolution.withCapability("com.google.collections:google-collections") {
select("com.google.guava:guava:0")
}
// and/or
resolutionStrategy.capabilitiesResolution.withCapability("com.google.guava:listenablefuture") {
select("com.google.guava:guava:0")
}
}
If that doesn't work, please let us know. And let us know whether our replacedBy
workaround or these other workarounds work instead.
Omitting annotations at runtime
One dependency of Guava that is not needed at runtime (j2objc-annotations
) is now omitted from the runtime classpath. (We may omit others in the future. See #6606.)
Other changes
collect
: Tweaked more nullness annotations. (501a016, 5c23590)hash
: Enhancedcrc32c()
to use Java's hardware-accelerated implementation where available. (65c7f10)util.concurrent
: AddedDuration
-baseddefault
methods toListeningExecutorService
. (e7714b0)- Began updating Javadoc to focus less on APIs that have been superseded by additions to the JDK. We're also looking to add more documentation that directs users to JDK equivalents for our APIs. Further PRs welcome! (c9efc47, 01dcc2e)
- Fixed some problems with using Guava from a Java Agent. (But we don't test that configuration, and we don't know how well we'll be able to keep it working.) (e42d4e8, de62703)
- Fixed
BootstrapMethodError
when usingCacheBuilder
from a custom system class loader. (As with the previous item, we're not sure how well we'll be able to keep this use case working.) (a667c38) - Suppressed a harmless
unusable-by-js
warning seen by users ofguava-gwt
.
32.0.1
Maven
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>32.0.1-jre</version>
<!-- or, for Android: -->
<version>32.0.1-android</version>
</dependency>
Jar files
Guava requires one runtime dependency, which you can download here:
Javadoc
JDiff
Changelog
io
: FixedFiles.createTempDir
andFileBackedOutputStream
under Windows, which broke as part of the security fix in release 32.0.0. Sorry for the trouble. (fdbf77d)
32.0.0
Maven
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>32.0.0-jre</version>
<!-- or, for Android: -->
<version>32.0.0-android</version>
</dependency>
Jar files
Guava requires one runtime dependency, which you can download here:
Javadoc
JDiff
Changelog
Security fixes
- Reimplemented
Files.createTempDir
andFileBackedOutputStream
to further address CVE-2020-8908 (#4011) and CVE-2023-2976 (#2575). (feb83a1)
While CVE-2020-8908 was officially closed when we deprecated Files.createTempDir
in Guava 30.0, we've heard from users that even recent versions of Guava have been listed as vulnerable in other databases of security vulnerabilities. In response, we've reimplemented the method (and the very rarely used FileBackedOutputStream
class, which had a similar issue) to eliminate the insecure behavior entirely. This change could technically affect users in a number of different ways (discussed under "Incompatible changes" below), but in practice, the only problem users are likely to encounter is with Windows. If you are using those APIs under Windows, you should skip 32.0.0 and go straight to 32.0.1 which fixes the problem. (Unfortunately, we didn't think of the Windows problem until after the release. And while we warn that common.io
in particular may not work under Windows, we didn't intend to regress support.) Sorry for the trouble.
Incompatible changes
Although this release bumps Guava's major version number, it makes no binary-incompatible changes to the guava
artifact.
One change could cause issues for Widows users, and a few other changes could cause issues for users in more usual situations:
- The new implementations of
Files.createTempDir
andFileBackedOutputStream
throw an exception under Windows. This is fixed in 32.0.1. Sorry for the trouble. guava-gwt
now requires GWT 2.10.0.- This release makes a binary-incompatible change to a
@Beta
API in the separate artifactguava-testlib
. Specifically, we changed the return type ofTestingExecutors.sameThreadScheduledExecutor
toListeningScheduledExecutorService
. The old return type was a package-private class, which caused the Kotlin compiler to produce warnings. (dafaa3e) - This release adds two methods to the Android flavor of Guava:
Invokable.getAnnotatedReturnType()
andParameter.getAnnotatedType()
. Those methods do not work under an Android VM; we added them only to help our tests of the Android flavor (since we also run those tests under a JRE). Android VMs tolerate such methods as long as the app does not call them or perform reflection on them, and builds tolerate them because of our new Proguard configurations (discussed below). Thus, we expect no impact to most users. However, we could imagine build problems for users who have set up their own build system for the Android flavor of Guava. Please report any problems so that we can judge how safely we might be able to add other methods to the Android flavor in the future, such as APIs that use Java 8 classes likeStream
. (b30e73c) - This release removes various APIs from the
guava-gwt
. This affects only users of GWT. The APIs we removed areEnums
,Sets.complementOf
, and theEnum*BiMap
classes'keyType()
andvalueType()
methods. These changes prepare for the removal of reflective enum-related APIs from J2CL. If one of these changes causes you problems as a GWT user, let us know. (c3a155d, 09db2c2, 3de12be) - The new implementations of
Files.createTempDir
andFileBackedOutputStream
are annotated as@J2ObjCIncompatible
. If you need to use them under J2ObjC, contact us. (56dc928) - Because the new version of
Files.createTempDir
restricts permissions to the current user, it could break any caller that relies on letting other users access the directory. - The new versions of
Files.createTempDir
andFileBackedOutputStream
throw an exception if they can't create the directory or file securely. Aside from the accidental Windows bug discussed above, this is possible only under Android Ice Cream Sandwich, a very old version of Android that is the oldest one we test Guava with.
Other changes
- Removed
@Beta
from almost all APIs. For details, see the bottom of the release notes. At this point, it's probably simpler to look at a list of APIs that still are@Beta
, such as this list forguava-jre
. Most of the remaining@Beta
APIs are ingraph
andhash
. - Enhanced the Guava jar to include Proguard configurations that are picked up automatically by the Android Gradle Plugin. This should help with warnings that were promoted to errors in Android Gradle Plugin 8.x. (aeba1e1)
- Enhanced the Guava jar to include information about method parameters in its class files. If you use static analyzers that look at method-parameter names, you may see new warnings or errors if they are now able to detect mismatches. But mostly, you may see better tooltips and autocompletion in IDEs. (59d174c)
- Improved nullness annotations on a few classes.
- Modified classes with "serial proxies" to declare exception-throwing
readObject
methods, in accordance with best practice. (e62d6a0) collect
: FixedMaps.newHashMapWithExpectedSize
to stop allocating maps that were larger than they needed to be. (6ad621e)collect
: Made various APIs work J2CL:Maps.immutableEnumMap
+toImmutableEnumMap
,EnumMultiset
,CollectorTester
. Previously, the APIs were present but failed at runtime. (b62c88e, 23ff918, 852a7d3)collect
: Optimized memory usage forInterner
andMapMaker
. (a2e8f3c)graph
: Changed directed graphs to reject attempts to add undirected edges. (76260d9)io
: AddedBaseEncoding.ignoreCase()
to support case-insensitive decoding. (9c1e5de)net
: AddedHttpHeaders
constants:net
: Added theMediaType
constant for JWT. (f942fd2)primitives
: Addedrotate()
for arrays of all primitive types. (cd338fa, 6e9057d)util.concurrent
: ChangedAbstractFuture
to runinterruptTask()
just beforeafterDone()
. Until this change, it ran slightly earlier than that: We used to run it before unblocking any pendingget()
calls, and now we run it after. (b337be6)util.concurrent
: Fixed some cases in which we could catchInterruptedException
but fail to restore the interrupt bit. (8f0350a)
@Beta
removal list
base
:Utf8
(211907c)base
: more APIs (b0cc461)collect
:Multimaps.asMap(...)
(df0081f)collect
:FluentIterable
APIs (73b2f7b)collect
:Forwarding[Foo]
APIs (9760dbc)collect
:ImmutableFoo.Builder.builderWithExpectedSize(...)
,orderEntriesByValue(...)
, andEntry
-related APIs (61be35c)collect
:RangeMap
,RangeSet
, and friends (fe12c81)collect
: more APIs (98820c7, e5e0f66)io
:ByteStreams
(4897930)io
: more APIs (a589256)math
: various APIs (912815e)primitives
:Longs.tryParse(...)
and friends (b3d4856)primitives
:UnsignedLongs
(b240e8c)primitives
: more APIs (fcec25f, ab4302a)reflect
:Invokable
and some methods inTypeToken
(a195f7d)reflect
:Parameter
(exceptgetAnnotatedType()
inguava-android
) (b561eb1)testing
: various APIs (b331769, 74ad9b8)util.concurrent
:FluentFuture
(b9a2d58)util.concurrent
:Futures
(15a0c9f)util.concurrent
:Striped
(ba8ad69)util.concurrent
: variousMoreExecutors
APIs (a3571b4)util.concurrent
: more APIs (bbaf76a)
31.1
Maven
<dependency>
<groupId>com.google.guava</groupId>
<artifactId>guava</artifactId>
<version>31.1-jre</version>
<!-- or, for Android: -->
<version>31.1-android</version>
</dependency>
Jar files
Guava requires one runtime dependency, which you can download here:
Javadoc
JDiff
Changelog
base
: Deprecated theThrowables
methodslazyStackTrace
andlazyStackTraceIsLazy
. They are no longer useful on any current platform. (6ebd7d8)collect
: Added a new methodImmutableMap.Builder.buildKeepingLast()
, which keeps the last value for any given key rather than throwing an exception when a key appears more than once. (68500b2)collect
: As a side-effect of thebuildKeepingLast()
change, the idiomImmutableList.copyOf(Maps.transformValues(map, function))
may produce different results iffunction
has side-effects. (This is not recommended.) (68500b2)hash
: AddedHashing.fingerprint2011()
. (13f703c)io
: ChangedByteStreams.nullOutputStream()
to follow the contract ofOutputStream.write
by throwing an exception if the range of bytes is out of bounds. (1cd85d0)net
: Added@CheckReturnValue
to the package (with a few exceptions). (a0e2577)net
: AddedHttpHeaders
constant forAccess-Control-Allow-Private-Network
. (6dabbdf)util.concurrent
: Added accumulate/update methods forAtomicDouble
andAtomicDoubleArray
. (2d875d3)
APIs promoted from @Beta
base
:Throwables
methodsgetCausalChain
andgetCauseAs
(dd462af)collect
:Streams
methodsmapWithIndex
andfindLast
(8079a29)collect
: the remaining methods inComparators
:min
,max
,lexicographical
,emptiesFirst
,emptiesLast
,isInOrder
,isInStrictOrder
(a3e411c)escape
: various APIs (468c68a)io
: various APIs inFiles
(828d9ee)net
: various APIs (261ac7a)reflect
: various APIs (9f6a384)testlib
: various APIs (93a8f02)util.concurrent
:AsyncCallable
,ListenableScheduledFuture
, andClosingFuture
(8b4ad17)util.concurrent
:ExecutionSequencer
,MoreExecutors.newSequentialExecutor
, andMonitor
(189d668)util.concurrent
:Futures
methods:submit
,submitAsync
,scheduleAsync
,nonCancellationPropagating
,inCompletionOrder
(e015172)util.concurrent
:Uninterruptibles
:awaitTerminationUninterruptibly
and theDuration
overloads in the class (825de9a)util.concurrent
: theFluentFuture
type, its factory methods, andaddCallback
(9c7e13b)