Where can I find the Java SDK in Linux after installing it

Question

I installed JDK using apt-get install but I don t know where my jdk folder is  I need to set the path for that  Does any one have a clue on the location

User · Answer

Simple  try it   It s  usr local java jdk version

User · Answer

on OpenSUSE 13 1 13 2 its   usr lib64 jvm java-1 6 0-openjdk- version-number  version-number can be 1 7 x 1 8 x etc  check software manager witch version you have installed       Andr

User · Answer

This is the best way which worked for me  Execute this Command -    dirname   readlink   which javac    java home

User · Answer

Use find to located it   It should be under  usr somewhere   find  usr -name java   When running the command  if there are too many  Permission denied  message obfuscating the actual found results then  simply redirect stderr to  dev null  find  usr -name java 2 gt   dev null

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This question will get moved but you can do the following  which javac   or  cd   find   -name  javac

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Three Step Process  First  open Terminal-   whereis java it would give output like this  java   usr bin java  usr share java  usr share man man1 java 1 gz  Second  ls -l  usr bin java It would give output like this  lrwxrwxrwx 1 root root 22 Feb  9 10 59  usr bin java - gt   etc alternatives java  Third  ls -l  etc alternatives java output is the JDK path  lrwxrwxrwx 1 root root 46 Feb  9 10 59  etc alternatives java - gt   usr lib jvm java-8-openjdk-amd64 jre bin java

User · Answer

This depends a bit from your package system     if the java command works  you can type readlink -f   which java  to find the location of the java command  On the OpenSUSE system I m on now it returns  usr lib64 jvm java-1 6 0-openjdk-1 6 0 jre bin java  but this is not a system which uses apt-get      On Ubuntu  it looks like it is in  usr lib jvm java-6-openjdk  for OpenJDK  and in some other subdirectory of  usr lib jvm  for Suns JDK  and other implementations as well  I think    Debian is the same     For any given package you can determine what files it installs and where it installs them by querying dpkg   For example for the package  openjdk-6-jdk   dpkg -L openjdk-6-jdk

User · Answer

This question still seems relevant  and the answer seems to be a moving target   On my debian system  buster     gt  update-java-alternatives -l java-1 11 0-openjdk-amd64      1111        usr lib jvm java-1 11 0-openjdk-amd64   However  if you actually go look there  you ll see there are multiple directories and symbolic links placed there by the package system to simplify future maintenance   The actual directory is java-11-openjdk-amd64  with another symlink of default-java   There is also an openjdk-11 directory  but it appears to only contain a source zip file   Given this  for Debian ONLY  I would guess the best value to use is  usr lib jvm default-java  as this should always be valid  even if you decide to install a totally different version of java  or even switch vendors   The normal reason to want to know the path is because some application wants it  and you probably don t want that app to break because you did an upgrade that changed version numbers

User · Answer

which java    should give you something like   usr bin java

User · Answer

On Linux Fedora30 several versions of the full java JDK are available  specifically package names   java-1 8 0-openjdk-devel x86 64  java-11-openjdk-devel x86 64   Once installed  they are found in   usr lib jvm  To select the location directory of a full development JDK  which is different from the simpler runtime only JRE  look for entries   ls -ld java openjdk    Here are two good choices  which are links to specific versions  where you will have to select the version    usr lib jvm java-1 8 0-openjdk  usr lib jvm java-11-openjdk

User · Answer

the command  sudo update-alternatives --config java will find the complete path of all installed Java versions

User · Answer

Another best way to find Java folder path is to use alternatives command in Fedora Linux  I know its for Ubuntu but I hit this post from google just by its headline   Just want to share incase people like me looking for answers for fedora flavour   To display all information regarding java  alternatives --display java

User · Answer

below command  worked in my debain 10 box  root debian  home arun  readlink -f   which java   usr lib jvm java-11-openjdk-amd64 bin java

User · Answer

update-java-alternatives -l   will tell you which java implementation is the default for your system and where in the filesystem it is installed  Check the manual for more options

[linux] Where can I find the Java SDK in Linux after installing it?

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