# Package-level declarations

## Types

JavaCompiler
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interface JavaCompiler
A java compiler used by compile tasks.
JavadocTool
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interface JavadocTool
Generates HTML API documentation for Java classes.
JavaInstallationMetadata
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interface JavaInstallationMetadata
Metadata about a Java tool obtained from a toolchain.
JavaLanguageVersion
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interface JavaLanguageVersion : Comparable<T>
Represents a Java Language version
JavaLauncher
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interface JavaLauncher
A java executable used to execute applications or run tests.
JavaToolchainDownload
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@Incubating
interface JavaToolchainDownload
The response provided by a JavaToolchainResolver to a specific JavaToolchainRequest.
JavaToolchainRepository
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@Incubating
interface JavaToolchainRepository : AuthenticationSupported
Named configuration of JavaToolchainResolver implementations, identified by their implementation class.
JavaToolchainRepositoryHandler
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@Incubating
interface JavaToolchainRepositoryHandler
org.gradle.api.NamedDomainObjectList based handler for configuring an ordered collection of `JavaToolchainRepository` implementations.
JavaToolchainRequest
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@Incubating
interface JavaToolchainRequest
Describes Java toolchains that need to be auto-provisioned, including their properties (see JavaToolchainSpec} and the build environment they are needed in.
JavaToolchainResolver
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@Incubating
interface JavaToolchainResolver : BuildService<T>
Interface that needs to be implemented by Java toolchain provisioning plugins.
JavaToolchainResolverRegistry
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@Incubating
interface JavaToolchainResolverRegistry
The build level object/service provided by Gradle which Java toolchain provisioning plugins can access to register their `JavaToolchainResolver` implementations/build services into.
JavaToolchainService
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@ServiceScope(value = Project::class)
interface JavaToolchainService
Allows to query for toolchain managed tools, like JavaCompiler, JavaLauncher and JavadocTool.
JavaToolchainSpec
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interface JavaToolchainSpec : Describable
Requirements for selecting a Java toolchain.
JvmImplementation
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class JvmImplementation
Represents a filter for a implementation of a Java Virtual Machine.
JvmToolchainManagement
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@Incubating
@ServiceScope(value = Build::class)
interface JvmToolchainManagement
Dynamic extension added to `ToolchainManagement` at runtime, by the `jvm-toolchain-management` plugin.
JvmVendorSpec
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abstract class JvmVendorSpec
Represents a filter for a vendor of a Java Virtual Machine implementation.