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A Software Development Kit, or an SDK, is a collection of tools that you need to develop an application for a specific software framework. For example, to develop applications in Java, you need a Java SDK (JDK). SDKs contain binaries, source code for the binaries, and documentation for the source code. JDK builds also contain annotations.

Generally, SDKs are global. It means that one SDK can be used in multiple projects and modules. After you create a new project and define an SDK for it, you can configure modules in this project to inherit its SDK. You can also specify an SDK for each module individually. For more information, refer to Change module SDK.

Java SE Development Kit 8 Downloads. Thank you for downloading this release of the Java™ Platform, Standard Edition Development Kit (JDK™). The JDK is a development environment for building applications, applets, and components using the Java programming language. Download JavaScript SDK for free. Browser independent JavaScript SDK. ClassLoader to lazy load JavaScript classes, extensions to core JavaScript, Reflection API, Collection API, Unit Testing API, AJAX API, Logging API, and Custom/DOM Event API. The Software Development Kit Manager. Is a tool for managing parallel versions of multiple Software Development Kits on most Unix based systems. It provides a convenient Command Line Interface (CLI) and API for installing, switching, removing and listing Candidates.

Supported SDKs:

Define an SDK

To define an SDK means to let IntelliJ IDEA know in which folder on your computer the necessary SDK version is installed. This folder is called an SDK home directory.

Configure global SDKs

  1. From the main menu, select File Project Structure Platform Settings SDKs.

  2. To add an SDK, click , select the necessary SDK and specify its home directory in the dialog that opens.

    Only for JDKs: if you don't have the necessary JDK on your computer, select Download JDK. In the next dialog, specify the JDK vendor, version, change the installation path if required, and click Download.

Set up a project SDK

  1. From the main menu, select File Project Structure Project Settings Project.

  2. If the necessary SDK is already defined in IntelliJ IDEA, select it from the Project SDK list.

    If the SDK is installed on your computer, but not defined in the IDE, select Add SDK 'SDK name', and specify the path to the SDK home directory.

    Only for JDKs: If you don't have the necessary JDK on your computer, select Add SDK Download JDK. In the next dialog, specify the JDK vendor, version, change the installation path if required, and click Download.

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Set up a module SDK

  1. From the main menu, select File Project Structure Project Settings Modules.

  2. Select the module for which you want to set an SDK and click Dependencies.

  3. If the necessary SDK is already defined in IntelliJ IDEA, select it from the Module SDK list.

    If the SDK is installed on your computer, but not defined in the IDE, select Add SDK 'SDK name', and specify the path to the SDK home directory.

    Only for JDKs: If you don't have the necessary JDK on your computer, select Add SDK Download JDK. In the next dialog, specify the JDK vendor, version, change the installation path if required, and click Download.

If you want a module to inherit a project SDK, select the Project SDK option from the Module SDK list.

Java Development Kit (JDK)

To develop applications in IntelliJ IDEA, you need a Java SDK (JDK). A JDK is a software package that contains libraries, tools for developing and testing Java applications (development tools), and tools for running applications on the Java platform (Java Runtime Environment — JRE).

The JRE can be obtained separately from the JDK, but it's not suitable for application development, as it doesn't have essential components such as compilers and debuggers.

  • The bundled JRE is used for running the IDE itself, and it's not sufficient for developing Java applications. Before you start developing in Java, download and install a standalone JDK build.

  • Due to the changes in the Oracle Java License, you might not have the rights to use Oracle's Java SE for free. We recommend that you use one of the OpenJDK builds to avoid potential compliance failures.

In IntelliJ IDEA, you can download a JDK package right from the IDE, or you can manually download the necessary JDK distribution and define it in the IDE.

For a manual download, use any available distribution that you like, for example:

If you don't know which distribution to choose, and you don't have specific requirements that instruct you to use one of the existing distributions, use Oracle OpenJDK.

Set up the project JDK

  1. From the main menu, select File Project Structure Project Settings Project.

  2. If the necessary JDK is already defined in IntelliJ IDEA, select it from the Project SDK list.

    If the JDK is installed on your computer, but not defined in the IDE, select Add SDK JDK, and specify the path to the JDK home directory (for example, /Library/Java/JavaVirtualMachines/jdk-12.0.1.jdk).

    If you don't have the necessary JDK on your computer, select Add SDK Download JDK. In the next dialog, specify the JDK vendor, version, change the installation path if required, and click Download.

  3. Apply the changes and close the dialog.

If you build your project with Maven or Gradle, refer to Change the JDK version in a Maven project and Gradle JVM selection respectively for more information on how to work with JDKs.

Specify SDK documentation paths

External documentation opens the necessary information in a web browser, so that you can navigate to related symbols and keep the information for further reference at the same time. After you configure external documentation for your project, you can also view it in a quick documentation popup.

Configure the external documentation path

To view external documentation, you need to configure the documentation URL first.

  1. In the Project Structure dialog Ctrl+Alt+Shift+S, select SDKs.

  2. Select the necessary SDK version if you have several SDKs configured, and open the Documentation Path tab on the right.

  3. Click the icon and enter the external documentation URL. For example, for Java 14, type https://docs.oracle.com/en/java/javase/14/docs/api/).

  4. Apply the changes and close the dialog.

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For more information on how to open external documentation and how to work with it offline, refer to External documentation.

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The full version string for this update release is 11.0.9+10 (where '+' means 'build'). The version number is 11.0.9.

Complete release notes for Java 11 can be found here.

IANA Data 2020a

JDK 11.0.9 contains IANA time zone data version 2020a. For more information, refer to Timezone Data Versions in the JRE Software.

Security Baselines

The security baselines for the Java Runtime Environment (JRE) at the time of the release of JDK 11.0.7 are specified in the following table:

JRE Family Version = JRE Security Baseline (Full Version String)

  • 11 = 11.0.9+7
  • 8 = 1.8.0_271-b09

Oracle JDK Expiration Date

Oracle recommends that the JDK is updated with each Critical Patch Update (CPU). In order to determine if a release is the latest, the following Security Baseline page can be used to determine which is the latest version for each release family.

Critical patch updates, which contain security vulnerability fixes, are announced one year in advance on Critical Patch Updates, Security Alerts and Bulletins. It is not recommended that this JDK (version 11.0.9) be used after the next critical patch update scheduled for January 19, 2021.

What's New:

Java

security-libs/java.security

➜ Weak Named Curves in TLS, CertPath, and Signed JAR Disabled by Default

  • Weak named curves are disabled by default by adding them to the following disabledAlgorithms security properties: jdk.tls.disabledAlgorithms, jdk.certpath.disabledAlgorithms, and jdk.jar.disabledAlgorithms. The named curves are listed below.
  • With 47 weak named curves to be disabled, adding individual named curves to each disabledAlgorithms property would be overwhelming. To relieve this, a new security property, jdk.disabled.namedCurves, is implemented that can list the named curves common to all of the disabledAlgorithms properties. To use the new property in the disabledAlgorithms properties, precede the full property name with the keyword include. Users can still add individual named curves to disabledAlgorithms properties separate from this new property. No other properties can be included in the disabledAlgorithms properties.
  • To restore the named curves, remove the include jdk.disabled.namedCurves either from specific or from all disabledAlgorithms security properties. To restore one or more curves, remove the specific named curve(s) from the jdk.disabled.namedCurves property.
  • Curves that are disabled through jdk.disabled.namedCurves include the following: secp112r1, secp112r2, secp128r1, secp128r2, secp160k1, secp160r1, secp160r2, secp192k1, secp192r1, secp224k1, secp224r1, secp256k1, sect113r1, sect113r2, sect131r1, sect131r2, sect163k1, sect163r1, sect163r2, sect193r1, sect193r2, sect233k1, sect233r1, sect239k1, sect283k1, sect283r1, sect409k1, sect409r1, sect571k1, sect571r1, X9.62 c2tnb191v1, X9.62 c2tnb191v2, X9.62 c2tnb191v3, X9.62 c2tnb239v1, X9.62 c2tnb239v2, X9.62 c2tnb239v3, X9.62 c2tnb359v1, X9.62 c2tnb431r1, X9.62 prime192v2, X9.62 prime192v3, X9.62 prime239v1, X9.62 prime239v2, X9.62 prime239v3, brainpoolP256r1, brainpoolP320r1, brainpoolP384r1, brainpoolP512r1
  • Curves that remain enabled are: secp256r1, secp384r1, secp521r1, X25519, X448. See JDK-8233228

Java 8 Sdk Download

security-libs/org.ietf.jgss:krb5

➜ Support for Kerberos Cross-Realm Referrals (RFC 6806)

  • The Kerberos client has been enhanced with the support of principal name canonicalization and cross-realm referrals, as defined by the RFC 6806 protocol extension.
  • As a result of this new feature, the Kerberos client can take advantage of more dynamic environment configurations and does not necessarily need to know (in advance) how to reach the realm of a target principal (user or service).
  • Support is enabled by default and 5 is the maximum number of referral hops allowed. To turn it off, set the sun.security.krb5.disableReferrals security or system property to false. To configure a custom maximum number of referral hops, set the sun.security.krb5.maxReferrals security or system property to any positive value.

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