44 thoughts on “CentOS – Install Java Sun JDK”

1. Christian López Espínola January 29, 2010 at 00:40

   I’m happy that it helped you

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   1. ykyuen Post authorJanuary 29, 2010 at 00:51

      CentOS is really not easy to use =P.
      Your article saves me a lot of time.
      
      Thanks.

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2. Mohan Gulati February 10, 2010 at 05:40

   Thanks your instructions were useful and got me moving along.

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   1. ykyuen Post authorFebruary 10, 2010 at 09:12

      you are welcome =)

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3. james smith April 21, 2010 at 16:37

   very informative..thanks a lot..james
   javajobs.net

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   1. ykyuen Post authorApril 22, 2010 at 01:07

      Good to know that it can help you =)

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4. sdf February 18, 2011 at 12:37

   did you have any probs with this install?

   the centos wiki suggests a far more complicated method of installation and hints at issues id you just execute the bin

   http://wiki.centos.org/HowTos/JavaOnCentOS

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   1. ykyuen Post authorFebruary 18, 2011 at 12:48

      This post was written a year ago and i am not very sure if it works on the latest CentOS.

      What will you do with your CentOS? if you just want to run some java program in console, i do think that this approach should work.

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      1. sdf February 18, 2011 at 13:20

         proprietary server app i don’t really know anything about.

         we should be testing early next week, will let you know if anything explodes.

         happy friday
      2. ykyuen Post authorFebruary 18, 2011 at 13:33

         i hope nothing will be exploded~~
         but you’d better find a testing CentOS to test the installation and see if that is what you want.

         good luck =P
5. dumbbell February 24, 2011 at 16:34

   just installed jdk1.6.0_24 on CentOS 5.5. No problem. Good and clear instructions. Follow to the dot and it works fine.

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   1. ykyuen Post authorFebruary 25, 2011 at 23:45

      Congrats~ =)

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6. Balazs Schaffhauser March 3, 2011 at 06:41

   Thanks a lot for the detailed information. Keep up the good work!

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   1. ykyuen Post authorMarch 7, 2011 at 18:28

      good to know that it helps =)

      Reply ↓
7. Dean March 4, 2011 at 09:05

   Great, simple to follow guide, thanks for this!

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   1. ykyuen Post authorMarch 7, 2011 at 18:33

      not at all. good to know that it works for u. =)

      Reply ↓
8. ThuocBD March 12, 2011 at 11:42

   Hi
   It’s really helpful. Thank you.

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   1. ykyuen Post authorApril 5, 2011 at 16:57

      You are welcome =D

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9. li April 5, 2011 at 12:12

   THanks man, I followed this and it works really well and saved me time!

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   1. ykyuen Post authorApril 5, 2011 at 16:58

      Great =D

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10. Sandy June 26, 2011 at 20:08

    My VPS Configuration
    OS: centos-5-x86_64
    VPS Platform: OpenVZ
    HDD : 50 GB
    Ram : 1 GB

    I am trying to install 1 software on my VPS. But java is giving me some problem

    [property] java.io.IOException: Cannot run program “/bin/env”: java.io.IOException: error=12, Cannot allocate memory

    So then I am tried to allocate heap memory to JVM by using command
    # java -Xms128m -Xmx128m DoRunTime

    It will give such type of error

    Exception in thread “DoRunTime” java.lang.NoClassDefFoundError: DoRunTime
    Caused by: java.lang.ClassNotFoundException: DoRunTime

    I am install JAVA using Command # yum install java-1.6.0-openjdk-devel

    I have set my JAVA_PATH=/usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0.x86_64

    Also I have set my CLASSPATH=/usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0.x86_64/jre/lib/ext/

    Also is there need to set PATH???
    I Don’t know what is going wrong………

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    1. ykyuen Post authorJune 27, 2011 at 00:36

       you need to set the PATH variable, edit your ~/.bashrc and add

       export JAVA_HOME="/usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0.x86_64"
       export PATH=$PATH:$JAVA_HOME/bin
       

       Then enter source .bashrc

       Try the java command again.

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       1. sandeepgeca June 27, 2011 at 01:56

          I have set the PATH using this command # vi ~/.bash_profile

          JAVA_HOME=/usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0.x86_64

          PATH=$PATH:/usr/lib/jvm/java-1.6.0-openjdk-1.6.0.0.x86_64/bin

          & I am also tried simple program of JAVA. Its working properly.

          I think the problem is in JVM heap memory.

          Is there any need of creating partition???

          # free -m
          total used free shared buffers cached
          Mem: 1024 23 1000 0 0 0
          -/+ buffers/cache: 23 1000
          Swap: 0 0 0

          reply
       2. ykyuen Post authorJune 27, 2011 at 14:39

          how about adding the JAVA_OPTIONS env variable?
          export JAVA_OPTIONS=”-Xms512m -Xmx512m”
       3. sandeepgeca June 27, 2011 at 16:54

          I have set this path also
          export JAVA_OPTIONS=”-Xms512m -Xmx512m”

          But it giving the same error. What you think it is Compile error or something diff.?

          Should i install latest JDK ???
       4. ykyuen Post authorJune 27, 2011 at 17:13

          I just found a post which may help
          StackOverflow – How to solve “java.io.IOException: error=12, Cannot allocate memory” calling Runtime#exec()?

          Seems it is a bug in OpenJDK, try
          echo 1 > /proc/sys/vm/overcommit_memory
          and run ur java application again.

          If still fails, I think you need to use the Sun JDK.

          Hope this help =)
       5. sandeepgeca June 27, 2011 at 20:19

          Thanks ykyuen

          I have updated my Sun JDK to latest version & now it is working fine. Also there is a problem in my Ant which is also due to old version.

          Now all my errors are fixed. As I am beginner I have waste my 5 days to fix this bug. I am using yum command to install the software which are installed already.

          So Moral of the story with Centos 5.5 is it required latest version of software. So when you try to install any software in Centos 5.5 Upadte your system
       6. ykyuen Post authorJune 27, 2011 at 21:54

          Good to know that finally u have solved the problem =D
11. krashcoarse August 26, 2011 at 00:54

    Wonderful! works great so far, thank you.

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    1. ykyuen Post authorAugust 26, 2011 at 01:03

       You are welcome~ kudos to Christian López Espínola

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12. NewLinuxUser September 8, 2011 at 02:30

    This is by far the clearest most concise instruction on how to install Java, and if there are multiple versions, how to set which version the system is using by default. Bravo ykyuen, you have simplified an otherwise complicated install. Thank you very much.

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    1. ykyuen Post authorSeptember 8, 2011 at 11:13

       Thanks for your comment. Kudos to Christian López Espínola as i learnt from his blog. =D

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13. rdgomez October 24, 2011 at 10:56

    Thanks a lot! Worked really well in Centos 6.

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    1. ykyuen Post authorOctober 26, 2011 at 00:35

       Thanks for letting us know it also works in Centos 6. I haven’t tried that before. =P

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14. ppulze February 19, 2012 at 12:22

    Thank you so very very much. I am a beginner to boot in CentOS. I had trouble installing and swapping sun-jdk but now thanks to you everything works perfect Thanks again!

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    1. ykyuen Post authorFebruary 19, 2012 at 16:34

       Good to know that the post could help. =)

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15. Rasha June 21, 2012 at 00:25

    Well explanation, thank you

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    1. ykyuen Post authorJune 21, 2012 at 00:30

       Thanks for your comment~ =D

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16. Pablo Arak July 28, 2012 at 23:13

    Thank you very much, accurate response, quick and just what I needed.

    Greetings.

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    1. ykyuen Post authorJuly 28, 2012 at 23:16

       Thanks very much your comment. =D

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17. starsea August 20, 2012 at 20:31

    it is need to install java jre ?

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    1. ykyuen Post authorAugust 20, 2012 at 22:06

       No need. The jdk already included the jre.

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18. prozach August 23, 2012 at 06:06

    I just burned a lot of time trying to figure this out. This is very poorly documented. THANK YOU!

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    1. ykyuen Post authorAugust 23, 2012 at 21:19

       You are welcome~
       Kudos to Christian López Espínola

       Reply ↓