Descargar Java JDK 12

Descargar Java JDK 12

Programa

Java SE Downloads

Java Platform, Standard Edition

Java Platform (JDK) 12

Descripción

Java Platform, Standard Edition Development Kit (JDK).

El JDK es un entorno de desarrollo para crear aplicaciones y componentes utilizando el lenguaje de programación Java.

El JDK incluye herramientas útiles para desarrollar, probar y monitorear programas escritos en el lenguaje de programación Java y que se ejecutan en la plataforma Java.

Dirección de descargas

https://www.oracle.com/technetwork/java/javase/downloads/

Cómo instalar OpenJDK 8 desde código fuente

How to install OpenJDK 8 from source code

How to install OpenJDK 8 from source code


Prerequisites (Fedora 20)

$ sudo yum install libXtst-devel libXt-devel libXrender-devel cups-devel alsa-lib-devel ccache 

Download and configure JDK8 

$ hg clone http://hg.openjdk.java.net/jdk8/jdk8/
$ cd jdk8
$ bash get_source.sh
$ bash configure

Be sure CLASSPATH and JAVA_HOME are not declared.

$ unset CLASSPATH
$ unset JAVA_HOME

$ make all 

Now you can take a cup of coffee. The process takes around 10 minutes.


----- Build times -------
Start 2014-02-03 14:55:12
End   2014-02-03 15:08:10
00:00:21 corba
00:00:15 demos
00:01:29 docs
00:07:08 hotspot
00:00:16 images
00:00:13 jaxp
00:00:18 jaxws
00:02:27 jdk
00:00:20 langtools
00:00:11 nashorn
00:12:58 TOTAL
-------------------------
Finished building OpenJDK for target 'all'


$ cd ./build/linux-x86_64-normal-server-release/images/j2sdk-image/bin
$ ./javac -version
javac 1.8.0-internal
$ ./java -version
openjdk version "1.8.0-internal"
OpenJDK Runtime Environment (build 1.8.0-internal-juanjo_2014_02_03_14_55-b00)
OpenJDK 64-Bit Server VM (build 25.0-b69, mixed mode)

$ export PATH=/path/to/jdk8/build/linux-x86_64-normal-server-release/images/j2sdk-image/bin

Fuente: http://snatverk.blogspot.mx/2014/02/how-to-install-java-18-from-source-code.html