martedì 11 gennaio 2011

Install JDK 6 update 23 in Ubuntu 10.10




JDK (Java Development Kit) is a software that provides development tools for creating Java programs.

Installation


First we must download the package from the java website, select your platform, in our case Linux:



http://www.oracle.com/technetwork/java/javase/downloads/index.html

Here we go down the file "jdk-6u21-linux-i586.bin" to any folder, then leave where appropriate.

Now we have to give execute permissions:
sudo chmod +x jdk-6u23-linux-i586.bin

and install:
sudo ./jdk-6u23-linux-i586.bin

Now move the generated folder to a more appropriate directory:
sudo mv jdk1.6.0_23/ /usr/local

We set the new Java as one of the alternatives "java"
sudo update-alternatives --install "/usr/bin/java" "java" "/usr/local/jdk1.6.0_23/bin/java" 1

Now we set the "new alternative" as real Java. This step makes the sun is the version used by default:
sudo update-alternatives --set java /usr/local/jdk1.6.0_23/bin/java

Now we do the same steps above for javac:

sudo update-alternatives --install "/usr/bin/javac" "javac" "/usr/local/jdk1.6.0_23/bin/javac" 1
sudo update-alternatives --set javac /usr/local/jdk1.6.0_23/bin/javac



Now verify that everything works properly. Open the console and type:
java -version

If all is well, you should return the following:

java version "1.6.0_23"
Java (TM) SE Runtime Environment (build 1.6.0_23-B06)
Java HotSpot (TM) Client VM (build 17.0-b16, mixed mode, sharing)


For javac:
javac -version

If all is well back:
javac 1.6.0_23

If you have other installations of java / javac can be configured using the following commands:
sudo update-alternatives --config java
sudo update-alternatives --config javac


Also if you want setear JRE_HOME JAVA_HOME or as environment variables, we must go to:
sudo gedit /etc/environment

Here we record the routes where we have installed Java, in our case is as follows:
JAVA_HOME = "/usr/local/jdk1.6.0_23/bin/" (add)
JRE_HOME = "/usr/local/jdk1.6.0_23/jre" (add)
PATH ="...(other routes):$JAVA_HOME:$JRE_HOME (edit)


With this we finish the installation.

35 commenti:

  1. Il problema e' che conviene usare i repo di Ubuntu. In questa guida te installi la JDK 6 update 21. Da repo, abilitando il repository "Canonical Partner", installa la update 22, mentre l'attuale versione presente sul sito e' la update 23.
    Non che questa guida sia sbagliata, ma con riferimenti cosi' assoluti ai download ti trovi che installerai sempre la 21 (finche' non salta il link o finche' non aggiorni la guida :) ), mentre usando i repo ufficiali "insegui" la versione quasi attuale.
    E poi te mi installi solo la 32 bit mannaggia... Esiste anche la versione per Linux x64...

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  2. Ma cosa cambia beppe??? :) segui la stessa guida per le versioni nuove che usciranno!!

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  3. seguí las instrucciones y todo salió a la perfección, aun y cuando instalé la version 24

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  4. Is it needed to download JDK? Isn't better to download just JRE?

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  5. If you are doing any Java or Java Server Pages (JSP) development then you probably want the JDK. If you are just needing to support plugins or applets, then the JRE is probably sufficient.

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  6. thx man you are my saver!

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  7. MUST BE!
    JAVA_HOME="/usr/local/jdk1.6.0_23"

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  8. ...and
    PATH=$JAVA_HOME/bin:$PATH

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  10. thank you for the instructions... worked perfectly ...

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  11. I am going to install java JDK on my ubuntu PC, thank you so much for helping to install this.

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  12. I followed instructions from a stackoverflow discussion which seemed to have fewer steps to install JDK6 on ubuntu 10.04 .. here is what I did. not sure if this has any negative affects..

    1. sudo apt-get install python-software-properties

    2. sudo add-apt-repository ppa:sun-java-community-team/sun-java6

    3. sudo apt-get update

    4. sudo apt-get install sun-java6-jre sun-java6-bin sun-java6-jdk

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  13. This is a good tutorial. Short, to the point, and works. Thanks!

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  14. Show de bola... mui grato!!

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  16. thank you..thank you..thank you..thank you..thank you..thank you..thank you..thank you..thank you..thank you..thank you..thank you..thank you..thank you..thank you..thank you..thank you..thank you..thank you..really helpful

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  17. Grazie mille da Danimarca!

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