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In this post, I will guide you to setup Java 11 on Windows operating system by downloading and installing Java Development Kit (JDK) version 11 from Oracle. You know, Oracle released Java 11 builds under two different licenses: Oracle JDK (commercial build with Oracle Technology Network license) and OpenJDK (open source build with GNU General Public license).

1. Download and Install Oracle JDK 11

Double-click on the package icon, and follow the instructions to install. When the installation has completed, click on Done. At this point, you may close up the window and drag jdk-8u65-macosx-x64.dmg to the Trash. Installing Eclipse. If you already have Eclipse installed on your Mac, you need to get rid of it. Global Nav Open Menu Global Nav Close Menu; Apple; Shopping Bag +.

With Mac OS 10.7 (Lion) and later, the Java runtime is no longer installed automatically as part of the OS installation. Follow any of the methods below to install Java runtime. Download the Eclipse Installer. Eclipse is hosted on many mirrors around the world. 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.

Oracle JDK 11 is the first LTS (Long Term Support) Java Development Kit since Oracle changed Java release cadence to every 6 months. According to Oracle, JDK 11 will be supported (commercial support) until September 2026.Head to Java SE Development Kit 11 Downloads page and choose the download file appropriate to your operating system. Oracle JDK 11 comes with installers for Linux (rpm and deb), macOS (dmg), Windows (exe) and archive files (tar.gz and zip).For Windows, I recommend to download the file jdk-11.0.7_windows-x64_bin.exe. Note that you must have an Oracle account to be able to download JDK 11 installer. If not, creating one is free.Run the downloaded file, and you will see the JDK 11 setup program appears:Just click Next twice to proceed installation with the defaults.Note that Oracle JDK 11 does not update system environment variables, so you have to manually update PATH and/or JAVA_HOME after installation. Open Command Prompt window under administrator privilege and type the following command:

setx -m JAVA_HOME 'C:Program FilesJavajdk-11.0.7'

If the PATH environment variable does not contain an entry to JAVA_HOMEbin, type the following command:

setx -m PATH '%JAVA_HOME%bin;%PATH%'

Then open another command prompt window and type java –version, you will see:That means you have successfully installed and configured Oracle JDK 11 on your computer.You can also watch the video below:

2. Download and Install OpenJDK 11

OpenJDK 11 is the open source distribution of JDK 11, licensed under GNU General Public License version 2 (GPLv2).To download OpenJDK 11, you have to go to OpenJDK Archive download page. Then scroll down a little bit to find the version 11.0.2. OpenJDK is distributed in only zip or tar.gz file. For Windows, download the zip file for Windows 64-bit, i.e. openjdk-11.0.2_windows-x64_bin.zip file.Extract the downloaded zip file to a directory. Then type the following command to update JAVA_HOME (in Command Prompt with administrator right):

setx -m JAVA_HOME 'g:JDKOpenJDKjdk-11.0.2'

Then open another command prompt and type java –version, you will see:That means you have successfully setup OpenJDK 11 on your computer.You can also watch the video below:

Related Tutorials:

With Mac OS 10.7 (Lion) and later, the Java runtime is no longer installed automatically as part of the OS installation. Follow any of the methods below to install Java runtime. Download the Eclipse Installer. Eclipse is hosted on many mirrors around the world. 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.

Oracle JDK 11 is the first LTS (Long Term Support) Java Development Kit since Oracle changed Java release cadence to every 6 months. According to Oracle, JDK 11 will be supported (commercial support) until September 2026.Head to Java SE Development Kit 11 Downloads page and choose the download file appropriate to your operating system. Oracle JDK 11 comes with installers for Linux (rpm and deb), macOS (dmg), Windows (exe) and archive files (tar.gz and zip).For Windows, I recommend to download the file jdk-11.0.7_windows-x64_bin.exe. Note that you must have an Oracle account to be able to download JDK 11 installer. If not, creating one is free.Run the downloaded file, and you will see the JDK 11 setup program appears:Just click Next twice to proceed installation with the defaults.Note that Oracle JDK 11 does not update system environment variables, so you have to manually update PATH and/or JAVA_HOME after installation. Open Command Prompt window under administrator privilege and type the following command:

setx -m JAVA_HOME 'C:Program FilesJavajdk-11.0.7'

If the PATH environment variable does not contain an entry to JAVA_HOMEbin, type the following command:

setx -m PATH '%JAVA_HOME%bin;%PATH%'

Then open another command prompt window and type java –version, you will see:That means you have successfully installed and configured Oracle JDK 11 on your computer.You can also watch the video below:

2. Download and Install OpenJDK 11

OpenJDK 11 is the open source distribution of JDK 11, licensed under GNU General Public License version 2 (GPLv2).To download OpenJDK 11, you have to go to OpenJDK Archive download page. Then scroll down a little bit to find the version 11.0.2. OpenJDK is distributed in only zip or tar.gz file. For Windows, download the zip file for Windows 64-bit, i.e. openjdk-11.0.2_windows-x64_bin.zip file.Extract the downloaded zip file to a directory. Then type the following command to update JAVA_HOME (in Command Prompt with administrator right):

setx -m JAVA_HOME 'g:JDKOpenJDKjdk-11.0.2'

Then open another command prompt and type java –version, you will see:That means you have successfully setup OpenJDK 11 on your computer.You can also watch the video below:

Related Tutorials:

To install Apache Kafka on Mac, Java is the only prerequisite. First we shall look into the installation steps of Java and then we shall setup Apache Kafka and run it on the Mac.

Install Java

1. Open a browser and hit the url [http://www.oracle.com/technetwork/java/javase/downloads/index.html].
2. Click on JDK, check 'Accept License Agreement' and download .dmg file for installation on Mac.
3. Double click on the downloaded file and proceed with the installation steps.
4. You have successfully installed Java. You may delete the .dmg file, as memory is costly on Mac.

You may verify the installation of Java on Mac, by running the following command on a Terminal.

java -version

Install Apache Kafka on Mac

1. Download the latest Apache Kafka from [https://kafka.apache.org/downloads] under Binary downloads.
2. Click on any of the binary downloads, or choose a specific scala version if you have any dependency with scala in your development.
3. Go with the recommended mirror site.
4. Extract the contents. Navigate to root of Apache Kafka folder and open a Terminal. Or Open a Terminal and navigate to the root directory of Apache Kafka.

   apples-MacBook-Pro:kafka_2.12-1.0.0Prasanth$ ls

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Start Zookeeper

Apache Kafka depends on Zookeeper for cluster management. Hence, prior to starting Kafka, Zookeeper has to be started. There is no need to explicitly install Zookeeper, as it comes included with Apache Kafka.

From the root of Apache Kafka, run the following command to start Zookeeper :

~$sh bin/zookeeper-server-start.sh config/zookeeper.properties

The zookeeper should be started with a similar following trace in the output.

apples-MacBook-Pro:kafka_2.12-1.0.0Prasanth$ sh bin/zookeeper-server-start.sh config/zookeeper.properties [2017-12-3115:18:36,556] INFO Reading configuration from:config/zookeeper.properties (org.apache.zookeeper.server.quorum.QuorumPeerConfig) [2017-12-3115:18:36,560] INFO autopurge.snapRetainCount set to3 (org.apache.zookeeper.server.DatadirCleanupManager) [2017-12-3115:18:36,560] INFO autopurge.purgeInterval set to0 (org.apache.zookeeper.server.DatadirCleanupManager) [2017-12-3115:18:36,560] INFO Purge task isnotscheduled. (org.apache.zookeeper.server.DatadirCleanupManager) [2017-12-3115:18:36,560] WARN Either no config orno quorum defined inconfig, running instandalone mode (org.apache.zookeeper.server.quorum.QuorumPeerMain) [2017-12-3115:18:36,582] INFO Reading configuration from:config/zookeeper.properties (org.apache.zookeeper.server.quorum.QuorumPeerConfig) [2017-12-3115:18:36,582] INFO Starting server (org.apache.zookeeper.server.ZooKeeperServerMain) [2017-12-3115:18:36,650] INFO Server environment:zookeeper.version=3.4.10-39d3a4f269333c922ed3db283be479f9deacaa0f, built on03/23/201710:13GMT (org.apache.zookeeper.server.ZooKeeperServer) [2017-12-3115:18:36,650] INFO Server environment:host.name=192.168.0.104 (org.apache.zookeeper.server.ZooKeeperServer)

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Start Apache Kafka Server

Open another Terminal and run the following command from the root of Apache Kafka to start Apache Kafka.

~$sh bin/kafka-server-start.sh config/server.properties

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Following should be the end of trace stating that Kafka server is started.

[2017-12-3115:52:20,291] INFO Initiating client connection, connectString=localhost:2181sessionTimeout=6000watcher=org.I0Itec.zkclient.ZkClient@4690b489 (org.apache.zookeeper.ZooKeeper) [2017-12-3115:52:20,307] INFO Waiting forkeeper state SyncConnected (org.I0Itec.zkclient.ZkClient) [2017-12-3115:52:20,310] INFO Opening socket connection toserver localhost/0:0:0:0:0:0:0:1:2181.Will notattempt toauthenticate using SASL (unknown error) (org.apache.zookeeper.ClientCnxn) [2017-12-3115:52:20,333] INFO Socket connection established tolocalhost/0:0:0:0:0:0:0:1:2181, initiating session (org.apache.zookeeper.ClientCnxn) [2017-12-3115:52:20,423] INFO Session establishment complete on server localhost/0:0:0:0:0:0:0:1:2181, sessionid=0x160abf917fa0000, negotiated timeout=6000 (org.apache.zookeeper.ClientCnxn) [2017-12-3115:52:20,425] INFO zookeeper state changed (SyncConnected) (org.I0Itec.zkclient.ZkClient) [2017-12-3115:52:20,798] INFO Cluster ID=diRCJM2mQ4qI9KzjiiLRVA (kafka.server.KafkaServer) [2017-12-3115:52:20,820] WARN No meta.properties file under dir/tmp/kafka-logs/meta.properties (kafka.server.BrokerMetadataCheckpoint) [2017-12-3115:52:20,866] INFO [ThrottledRequestReaper-Fetch]:Starting (kafka.server.ClientQuotaManager$ThrottledRequestReaper) [2017-12-3115:52:20,869] INFO [ThrottledRequestReaper-Produce]:Starting (kafka.server.ClientQuotaManager$ThrottledRequestReaper) [2017-12-3115:52:20,870] INFO [ThrottledRequestReaper-Request]:Starting (kafka.server.ClientQuotaManager$ThrottledRequestReaper) [2017-12-3115:52:20,923] INFO Log directory'/tmp/kafka-logs'notfound, creating it. (kafka.log.LogManager) [2017-12-3115:52:20,943] INFO Loading logs. (kafka.log.LogManager) [2017-12-3115:52:20,973] INFO Logs loading complete in29ms. (kafka.log.LogManager) [2017-12-3115:52:21,155] INFO Starting log cleanup withaperiod of300000ms. (kafka.log.LogManager) [2017-12-3115:52:21,159] INFO Starting log flusher withadefaultperiod of9223372036854775807ms. (kafka.log.LogManager) [2017-12-3115:52:21,535] INFO Awaiting socket connections on0.0.0.0:9092. (kafka.network.Acceptor) [2017-12-3115:52:21,538] INFO [SocketServer brokerId=0] Started1acceptor threads (kafka.network.SocketServer) [2017-12-3115:52:21,571] INFO [ExpirationReaper-0-Produce]:Starting (kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper) [2017-12-3115:52:21,573] INFO [ExpirationReaper-0-Fetch]:Starting (kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper) [2017-12-3115:52:21,575] INFO [ExpirationReaper-0-DeleteRecords]:Starting (kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper) [2017-12-3115:52:21,588] INFO [LogDirFailureHandler]:Starting (kafka.server.ReplicaManager$LogDirFailureHandler) [2017-12-3115:52:21,653] INFO [ExpirationReaper-0-topic]:Starting (kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper) [2017-12-3115:52:21,658] INFO [ExpirationReaper-0-Heartbeat]:Starting (kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper) [2017-12-3115:52:21,658] INFO Creating/controller (isit secure? false) (kafka.utils.ZKCheckedEphemeral) [2017-12-3115:52:21,659] INFO [ExpirationReaper-0-Rebalance]:Starting (kafka.server.DelayedOperationPurgatory$ExpiredOperationReaper) [2017-12-3115:52:21,666] INFO Result of znode creation is:OK (kafka.utils.ZKCheckedEphemeral) [2017-12-3115:52:21,683] INFO [GroupCoordinator0]:Starting up. (kafka.coordinator.group.GroupCoordinator) [2017-12-3115:52:21,684] INFO [GroupCoordinator0]:Startup complete. (kafka.coordinator.group.GroupCoordinator) [2017-12-3115:52:21,688] INFO [GroupMetadataManager brokerId=0] Removed0expired offsets in4milliseconds. (kafka.coordinator.group.GroupMetadataManager) [2017-12-3115:52:21,727] INFO [ProducerId Manager0]:Acquired newproducerId block (brokerId:0,blockStartProducerId:0,blockEndProducerId:999) by writing toZk with path version1 (kafka.coordinator.transaction.ProducerIdManager) [2017-12-3115:52:21,782] INFO [TransactionCoordinator id=0] Starting up. (kafka.coordinator.transaction.TransactionCoordinator) [2017-12-3115:52:21,784] INFO [Transaction Marker Channel Manager0]:Starting (kafka.coordinator.transaction.TransactionMarkerChannelManager) [2017-12-3115:52:21,797] INFO [TransactionCoordinator id=0] Startup complete. (kafka.coordinator.transaction.TransactionCoordinator) [2017-12-3115:52:21,889] INFO Creating/brokers/ids/0 (isit secure? false) (kafka.utils.ZKCheckedEphemeral) [2017-12-3115:52:21,895] INFO Result of znode creation is:OK (kafka.utils.ZKCheckedEphemeral) [2017-12-3115:52:21,897] INFO Registered broker0at path/brokers/ids/0with addresses:EndPoint(192.168.0.104,9092,ListenerName(PLAINTEXT),PLAINTEXT) (kafka.utils.ZkUtils) [2017-12-3115:52:21,900] WARN No meta.properties file under dir/tmp/kafka-logs/meta.properties (kafka.server.BrokerMetadataCheckpoint) [2017-12-3115:52:21,920] INFO Kafka version:1.0.0 (org.apache.kafka.common.utils.AppInfoParser) [2017-12-3115:52:21,920] INFO Kafka commitId:aaa7af6d4a11b29d (org.apache.kafka.common.utils.AppInfoParser) [2017-12-3115:52:21,922] INFO [KafkaServer id=0] started (kafka.server.KafkaServer)

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Conclusion :

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In this Apache Kafka Tutorial, we have successfully learnt to install Apache Kafka on Mac and start Kafka along with Zookeeper.