include::sample[dir="snippets/java-library/module/groovy",files="build.gradle[tags=declareVersion]"]
====

=== Using libraries that are not modules

You probably want to use external libraries, like OSS libraries from Maven Central, in your modular Java project.
Some libraries, in their newer versions, are already full modules with a module descriptor.
For example, `com.google.code.gson:gson:2.8.9` that has the module name `com.google.gson`.

The actual version will be subject to traditional conflict resolution, if any.

[[sub:using-platform-to-control-transitive-deps]]
== Using a platform to control transitive versions

A <<dependency_management_terminology.adoc#sub::terminology_platform,platform>> is a special software component which can be used to control transitive dependency versions.

Y como la mayor parte del tiempo de ejecución lo coge el trabajo real (en lugar de esperar), y el trabajo en un sistema lo realiza una <abbr title = "Central Processing Unit. En español: Unidad Central de Procesamiento."> CPU </abbr>, a estos problemas se les llama "<abbr title="En español: atado a CPU.">CPU bound</abbr>".

---

    testRotate(new byte[] {1}, 0, 0, 1, new byte[] {1});
    testRotate(new byte[] {1}, 1, 0, 1, new byte[] {1});
    testRotate(new byte[] {1}, 1, 1, 1, new byte[] {1});

    // Rotate the central 5 elements, leaving the ends as-is
    testRotate(new byte[] {0, 1, 2, 3, 4, 5, 6}, -6, 1, 6, new byte[] {0, 2, 3, 4, 5, 1, 6});
    testRotate(new byte[] {0, 1, 2, 3, 4, 5, 6}, -1, 1, 6, new byte[] {0, 2, 3, 4, 5, 1, 6});

	"k8s.io/kubernetes/pkg/volume/util"
	volumetypes "k8s.io/kubernetes/pkg/volume/util/types"
	"k8s.io/mount-utils"
	utilstrings "k8s.io/utils/strings"
)

// TODO (vladimirvivien) move this in a central loc later
var (
	volDataKey = struct {
		specVolID,
		volHandle,
		driverName,
		nodeName,
		attachmentID,
		volumeLifecycleMode,
		seLinuxMountContext string
	}{
		"specVolID",
		"volumeHandle",

	}
	return 0
}

func (v Value) typ() *abi.Type {
	// Types are either static (for compiler-created types) or
	// heap-allocated but always reachable (for reflection-created
	// types, held in the central map). So there is no need to
	// escape types. noescape here help avoid unnecessary escape
	// of v.
	return (*abi.Type)(abi.NoEscape(unsafe.Pointer(v.typ_)))
}

package adsc

import (
	"context"
	"errors"
	"fmt"
	"math"
	"strings"
	"sync"
	"time"

	core "github.com/envoyproxy/go-control-plane/envoy/config/core/v3"
	discovery "github.com/envoyproxy/go-control-plane/envoy/service/discovery/v3"
	"github.com/envoyproxy/go-control-plane/pkg/resource/v3"
	"go.uber.org/atomic"
	"google.golang.org/genproto/googleapis/rpc/status"
	"google.golang.org/grpc"

    testRotate(new char[] {'1'}, 0, 0, 1, new char[] {'1'});
    testRotate(new char[] {'1'}, 1, 0, 1, new char[] {'1'});
    testRotate(new char[] {'1'}, 1, 1, 1, new char[] {'1'});

    // Rotate the central 5 elements, leaving the ends as-is
    testRotate(
        new char[] {'0', '1', '2', '3', '4', '5', '6'},
        -6,
        1,
        6,
        new char[] {'0', '2', '3', '4', '5', '1', '6'});

    mavenCentral()
    google()
}
----

In the example, the `guava` library and the JetBrains Kotlin plugin (`org.jetbrains.kotlin.jvm`) will be downloaded from the link:https://repo.maven.apache.org/maven2/[Maven Central Repository].

=== 3. Add dependencies

A project generally has a number of dependencies it needs to do its work.

	// Normally initialized from ISTIO_META_CLUSTER_ID - after a tortuous journey it
	// makes its way into the ClusterID metadata of Citadel gRPC request to create the cert.
	// Didn't find much doc - but I suspect used for 'central cluster' use cases - so should
	// match the cluster name set in the MC setup.
	ClusterID string

	// The type of Elliptical Signature algorithm to use
	// when generating private keys. Currently only ECDSA is supported.