Jdk 8u271 windows x64 exe

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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.

The JDK includes tools useful for developing and testing programs written in the Java programming language and running on the Java platform.

Important Oracle JDK License Update

The Oracle JDK License has changed for releases starting April 16, 2019.

The new Oracle Technology Network License Agreement for Oracle Java SE is substantially different from prior Oracle JDK licenses. The new license permits certain uses, such as personal use and development use, at no cost — but other uses authorized under prior Oracle JDK licenses may no longer be available. Please review the terms carefully before downloading and using this product. An FAQ is available here.

Commercial license and support is available with a low cost Java SE Subscription.

Oracle also provides the latest OpenJDK release under the open source GPL License at jdk.java.net.

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Java JDK 8 Update 271 (64-bit)

Windows Vista64 / Windows 7 64 / Windows 8 64 / Windows 10 64

Java Development Kit 64-bit (also known as JDK) contains the software and tools that you need to compile, debug, and run applets and applications that you’ve written using the Java programming language. JDK has as its primary components a collection of programming tools, including javac, jar, and the archiver, which packages related class libraries into a single JAR file. This tool also helps manage JAR files, javadoc — the documentation generator, which automatically generates documentation from source code comments, jdb — the debugger, jps — the process status tool, which displays process information for current Java processes, javap — the class file disassembler, and so many other components.

The JDK 64-bit also comes with a complete Java Runtime Environment, usually called a private runtime. It consists of a Java Virtual Machine and all of the class libraries present in the production environment, as well as additional libraries only useful to developers, and such as the internationalization libraries and the IDL libraries. Download Java Development Kit Offline Installer Setup 64bit for Windows

Contents of the JDK:

Development Tools
(In the bin/ subdirectory) Tools and utilities that will help you develop, execute, debug, and document programs are written in the JavaTM programming language.

Runtime Environment
(In the jre/ subdirectory) An implementation of the Java Runtime Environment (JRE) for use by the JDK. The JRE includes a Java Virtual Machine (JVM), class libraries, and other files that support the execution of programs written in the Java programming language.

Additional Libraries
(In the lib/ subdirectory) Additional class libraries and support files required by the development tools.

Demo Applets and Applications
(In the demo/ subdirectory) Examples, with source code, of programming for the Java platform. These include examples that use Swing and other Java Foundation Classes, and the Java Platform Debugger Architecture.

Sample Code
(In the sample subdirectory) Samples, with source code, of programming for certain Java API’s.

C header Files
(In the include/ subdirectory) Header files that support native-code programming using the Java Native Interface, the JVM Tool Interface, and other functionality of the Java platform. Download Java Development Kit Offline Installer Setup 64bit for Windows

Java SE Development Kit (JDK) 8, 9, 11

Информация о программе

Описание

JDK — обязательный пакет инструментов, необходимый для разработки программ на языке Java. Он доступен на 32 и 64 битных операционных системах Windows, MacOSX и Linux. Программное обеспечение стало незаменимым помощником разработчика, поскольку компилирует исходный код в битную структуру и содержит набор библиотек.

JDK или Java Development Kit — официальная программа, выпущенная компанией Oracle. Лицензия доступна для бесплатного скачивания. Особенность софта в том, что он содержит минимальный набор инструментов java-программиста кроме интегрированной среды разработки (IDE). А для работы сред IDE, отвечающих современным требованиям, необходим пакет JDK.

Поскольку в комплект не входит интегрированная среда разработки — платформа для написания и изменения программного кода, разработчику приходится использовать сторонний редактор кода. В набор инструментов JDK входит исполнительная программа JRE, которая запускает приложение, написанное на языке JAVA. С ее помощью разработчик увидит работу программного обеспечения на разных устройствах и операционных системах.

JDK состоит из:

• Набора основных классов;
• Библиотек;
• Компилятора;
• Исполнительной среды;
• Интерпретатора;
• Архиватора;
• Документации и др;

Каждый программист, создающий java-приложения, начинает свой путь с установки этого софта на свой компьютер. На нашем сайте вы сможете скачать JDK 8 версии для x32 и x64 систем Windows, а также JDK версий 9 и 11, которые работают только на 64 битных системах.

JDK 8u271 Update Release Notes

Java™ SE Development Kit 8, Update 271 (JDK 8u271)

October 20, 2020

The full version string for this update release is 1.8.0_271-b09 (where «b» means «build»). The version number is 8u271.

IANA Data 2020a

JDK 8u271 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 8u271 are specified in the following table:

JRE Family Version	JRE Security Baseline (Full Version String)
8	1.8.0_271-b09
7	1.7.0_281-b06

Keeping the JDK up to 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 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 8u271) be used after the next critical patch update scheduled for January 19, 2021.

Java SE Subscription customers managing JRE updates/installs for large number of desktops should consider using Java Advanced Management Console (AMC).

For systems unable to reach the Oracle Servers, a secondary mechanism expires this JRE (version 8u271) on February 20, 2021. After either condition is met (new release becoming available or expiration date reached), the JRE will provide additional warnings and reminders to users to update to the newer version. For more information, see 23.1.2 JRE Expiration Date in the Java Platform, Standard Edition Deployment Guide.

New Features

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

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.

See further information in JDK-8223172.

A new system property, jdk.tls.maxHandshakeMessageSize , has been added to set the maximum allowed size for the handshake message in TLS/DTLS handshaking. The default value of the system property is 32768 (32 kilobytes).

A new system property, jdk.tls.maxCertificateChainLength , has been added to set the maximum allowed length of the certificate chain in TLS/DTLS handshaking. The default value of the system property is 10.

The keytool and jarsigner tools have been updated to warn users when weak cryptographic algorithms are used in keys, certificates, and signed JARs before they are disabled. The weak algorithms are set in the jdk.security.legacyAlgorithms security property in the java.security configuration file. In this release, the tools issue warnings for the SHA-1 hash algorithm and 1024-bit RSA/DSA keys.

The ‘canonicalize’ flag in the krb5.conf file is now supported by the JDK Kerberos implementation. When set to true, RFC 6806 name canonicalization is requested by clients in TGT requests to KDC services (AS protocol). Otherwise, and by default, it is not requested.

The new default behavior is different from JDK 14 and previous releases where name canonicalization was always requested by clients in TGT requests to KDC services (provided that support for RFC 6806 was not explicitly disabled with the sun.security.krb5.disableReferrals system or security properties).

Removed Features and Options

NPAPI is considered to be a vulnerable plugin and has been disabled in many browsers. No browsers currently support Java Plugin, which is NPAPI-based, on Linux, Solaris, and MacOS platforms.

Starting from 8u271, the part of Java Plugin responsible for integration and interaction with a browser (in particular libnpjp2 library) and an associated artifact will not be built and is not part of the JRE distribution on Linux, Solaris, and MacOS platforms.

Other notes

A new environment property, jdk.jndi.ldap.mechsAllowedToSendCredentials , has been added to control which LDAP authentication mechanisms are allowed to send credentials over clear LDAP connections — a connection not secured with TLS. An encrypted LDAP connection is a connection opened by using ldaps scheme, or a connection opened by using ldap scheme and then upgraded to TLS with a STARTTLS extended operation.

The value of the property, which is by default not set, is a comma separated list of the mechanism names that are permitted to authenticate over a clear connection. If a value is not specified for the property, then all mechanisms are allowed. If the specified value is an empty list, then no mechanisms are allowed (except for none and anonymous ). The default value for this property is ‘null’ ( i.e. System.getProperty(«jdk.jndi.ldap.mechsAllowedToSendCredentials») returns ‘null’). To explicitly permit all mechanisms to authenticate over a clear connection, the property value can be set to «all» . If a connection is downgraded from encrypted to clear , then only the mechanisms that are explicitly permitted are allowed.

The property can be supplied to the LDAP context environment map, or set globally as a system property. When both are supplied, the environment map takes precedence.

Note: none and anonymous authentication mechanisms are exempted from these rules and are always allowed regardless of the property value.

The following root certificates have been added to the cacerts truststore:

The following root certificate has been added to the cacerts truststore:

Communication with the alternatives framework of JDK RPM installer starting from 8u261 has changed. JDK RPM installers of prior versions registered two groups of symbolic links with alternatives framework, java and javac . Some names of links in these groups were duplicated, which resulted in installation failures for some versions of alternatives framework. The JDK RPM installer beginning with 8u261 doesn’t register the javac group with alternatives framework. All links unique to the javac group have been moved into the java group, but the set of symbolic links registered by the installer have not changed; only the duplicated links have been dropped.

The implication of this change is that if this version of JDK and 8u251 or older versions of the JDK are installed and the previous version is uninstalled, the symbolic links from the java group that are managed by the alternatives framework will be deleted. To restore deleted links, run the command:

/usr/sbin/alternatives —auto java

Some text in the Installer window is hidden/invisible when using Dark mode on macOS. To workaround this issue, switch to Light mode when running the installer. This issue should be resolved by JDK-8249683.

The deserialization of java.lang.reflect.Proxy objects can be limited by setting the system property jdk.serialProxyInterfaceLimit . The limit is the maximum number of interfaces allowed per Proxy in the stream. Setting the limit to zero prevents any Proxies from being deserialized including Annotations, a limit of less than 2 might interfere with RMI operations.

Bug Fixes

This release also contains fixes for security vulnerabilities described in the Oracle Critical Patch Update. For a more complete list of the bug fixes included in this release, see the JDK 8u271 Bug Fixes page.