Where is the Java SDK folder in my computer Ubuntu 12 04

Question

I know it s installed because when I type    java -version   I get   OpenJDK Runtime Environment  IcedTea6 1 12 5   6b27-1 12 5-0ubuntu0 12 04 1  OpenJDK 64-Bit Server VM  build 20 0-b12  mixed mode    And when I type    locate jdk   I get    home arturo Documents 2012a sys java jre glnxa64 jre lib servicetag jdk header png  usr share app-install desktop openjdk-6-jre openjdk-6-java desktop  usr share app-install desktop openjdk-7-jre openjdk-7-java desktop  usr share app-install icons openjdk-6 png  usr share app-install icons openjdk-7 png   What worries me about the first item in the list is that the 2012a folder is my MATLAB folder and not a standard  usr lib  folder  I m really confused on where the JDK and JRE got installed  because I need to set the  JAVA HOME path pointing to the folder  Where am I missing something

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I found the solution to this with path name    usr lib jvm java-8-oracle  I m on mint 18 1

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whereis java java   usr bin java  usr bin X11 java  usr share java      usr share man man1 java 1 gz  cd  usr bin  ls -l java lrwxrwxrwx 1 root root 22 Apr 15  2014 java - gt   etc alternatives java  ls -l  etc alternatives java lrwxrwxrwx 1 root root 39 Apr 15  2014  etc alternatives java - gt       usr lib jvm java-7-oracle jre bin java   So JDK s real location is   usr lib jvm java-7-oracle

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On Ubuntu 14 04  it is in  usr lib jvm default-java

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WAY-1   Updated for the shortest and easy way   Below command will give you the path  But it will only work if java command is working in other words if java path is configured    readlink -f   which java     Read more at Where can I find the Java SDK in Linux        WAY-2  Better than WAY-1    Below answer is still working and try it if above command is not working   for you     You need to dig into symbolic links  Below is steps to get Java directory  Step 1     whereis java java   usr bin java  etc java  usr share java   That tells the command java resides in  usr bin java   Dig again   Step 2     ls -l  usr bin java lrwxrwxrwx 1 root root 22 2009-01-15 18 34  usr bin java - gt   etc alternatives java   So  now we know that  usr bin java is actually a symbolic link to  etc alternatives java   Dig deeper using the same method above   Step 3     ls -l  etc alternatives java lrwxrwxrwx 1 root root 31 2009-01-15 18 34  etc alternatives java - gt   usr local jre1 6 0 07 bin java   So  thats the actual location of java   usr local jre       You could still dig deeper to find other symbolic links     Reference   where is java s home dir

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you can simply write the following command in the terminal of your linux system and get the java path  - echo  JAVA HOME

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whereis java  java   usr bin java  usr lib java  usr bin X11 java  usr share java    usr share man man1 java 1 gz

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Location of JRE in Ubuntu    usr lib jvm java-7-oracle jre

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For me  on Ubuntu  the various versions of JDK were in  usr lib jvm

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Please use this command    readlink -f   which java    It works for me with Ubuntu gnome   On my computer the result is         usr lib jvm java-7-oracle jre bin java   Regards

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In generally  java gets installed at  usr lib jvm   That is where my sun jdk is installed  check if it is same for open jdk also

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I am using Ubuntu 18 04 1 LTS  In my case I had to open the file    home  username  netbeans-8 2 etc netbeans conf   And change the jdk location to   netbeans jdkhome   opt jdk jdk1 8 0 152    Then saved the file and re-run Netbeans  It worked for me

[java] Where is the Java SDK folder in my computer? Ubuntu 12.04

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