![]() ![]() appletviewer: It can be used to execute and debug several Java applets without any web browser.apt: It stands for annotation processing tool.JDK contains a group of programming tools as its main components, including: The primary implementation of Oracle of the JVMS is called the HotSpot. Older versions supported the SPARC architecture and Oracle Solaris OS. Oracle publish binaries for x86-64 architecture for Linux, macOS, and Windows-based OSes and for the aarch64 architecture for Linux and macOS. Besides, Oracle has published the latest software version upon the NFTC (Oracle No-Free Terms and Conditions) license.Some examples of added software are a compiler, a virtual machine, a debugger, performance monitoring tools, and other services that Oracle considers helpful for Java programmers.It offers software to work with Java applications.JDK implements JLS (Java Language Specification) and JVMS (Java Virtual Machine Specification) and offers SE (Standard Edition) of the API (Java Application Programming Interface). ![]() Java Development Kit is a Java Technology distribution by Oracle Corporation.The Java Development Kit contains the Java Runtime Environment and debugging/development tools as well as libraries mandatory for building Java applications. The Java Runtime Environment is composed of the Java Virtual Machine, binaries, and classes that permit us to execute Java programs. The repositories of Ubuntu 20.04 (default) contain two packages of OpenJDK, Java Development Kit, and Java Runtime Environment. When we are finished, we will be able to apply the JDK for developing software or using the Java Runtime for running software. We will then choose the release we wish to use for our projects. We will install OpenJDK and the official JDK as well from Oracle. In this article, we will install many releases of Java Development Kit (JDK) and Java Runtime Environment (JRE) using 'apt'. Note that for Ubuntu 64 you will have java-9-openjdk-amd64 sudo echo export JAVA_HOME="/usr/lib/jvm/java-9-openjdk-amd64" > ~/.JVM (Virtual Machine of Java) and Java are needed for various types of software including Jenkins, Cassandra, Glassfish, Jetty, and Tomcat. Set JAVA_HOME 32b by sudo echo export JAVA_HOME="/usr/lib/jvm/java-9-openjdk-i386" > ~/.bashrc You can check which java is installed by: update-alternatives -config java In order to set JAVA_HOME add this line: JAVA_HOME="/usr/lib/jvm/java-9-openjdk-i386" JAVA_HOME is vital for java programs and shows which version shoud be used. Lrwxrwxrwx 1 root root 23 javac -> /etc/alternatives/javac This is symbolic link put in the system path by Ubuntu for the JDK: lrwxrwxrwx 1 root root 22 java -> /etc/alternatives/java Installation of java can be tested by several commands: java -version Sudo dpkg -i -force-overwrite '/var/cache/apt/archives/openjdk-9-jdk_9~b114-0ubuntu1_b' openjdk-9-jdk_9~b114-0ubuntu1_b): sudo apt install openjdk-9-jdk Or by (the files could be different for you i.e. You can try to install by : sudo apt-get -o Dpkg::Options::="-force-overwrite" install openjdk-9-jdk var/cache/apt/archives/openjdk-9-jdk_9~b114-0ubuntu1_bĮ: Sub-process /usr/bin/dpkg returned an error code (1) Note you may face error like: Errors were encountered while processing: Install is done by this command: sudo apt-get install openjdk-9-jdk Oracle-java9-installer - Oracle Java(TM) Development Kit (JDK) 9 ![]() Oracle-java8-installer - Oracle Java(TM) Development Kit (JDK) 8 Oracle-java6-installer - Oracle Java(TM) Development Kit (JDK) 6 ![]() Oracle-java7-installer - Oracle Java(TM) Development Kit (JDK) 7 **openjdk-9-jdk - OpenJDK Development Kit (JDK)** Openjdk-9-doc - OpenJDK Development Kit (JDK) documentation Choose OpenJDK 9 version from the results:ĭefault-jdk - Standard Java or Java compatible Development Kitĭefault-jdk-doc - Standard Java or Java compatible Development Kit (documentatio ***.You can check for all available versions simply by: Update November 2019: The correct way to install Oracle JDK on Ubuntu Search available Openjdk packagesīy default Ubuntu / Linux Mint is using OpenJDK. You can check this video of installation of Java 9 on Ubuntu 16: install Openjdk 9 by - sudo apt-get install openjdk-9-jdk. ![]()
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