Windows ignores JAVA HOME how to set JDK as default

Question

How do I persuade Windows to use the JDK instead of a JRE   This question has been asked before  here and elsewhere   How do I set the default Java installation runtime  Windows    The trouble is that Windows ignores JAVA HOME and it also ignores the fact that I made the JDK bin directory the first entry in the path   When I run java -version from the command line  instead of invoking my JDK 1 6 installation  it runs the 1 7 JRE   My guess is that this is a problem specific to 1 7  and Windows 7 is doing something it shouldn t with the registry   Any ideas on how to fix this   Edit  Oops  I wrote  first entry in the classpath  above  when I meant  path   Sorry

User · Answer

I have this issue too  I am running 1 6 but want to build the code I m working on with 1 5  I ve changed the JAVA HOME and PATH  both user and system  to no avail    The answer is that the installer for 1 6 dropped java exe  javaw exe  and javaws exe into my Windows System32 folder  Windows 7     I solved it by renaming those files to java wrong exe  javaw wrong exe  and javaws wrong exe  Only after doing that does it pick up the correct version of java as defined in JAVA HOME and PATH  I renamed the files thusly because that deleted them in an easily reversible manner   Hope this helps

User · Answer

Just in case if you are using  BAT file as Windows Service  I would suggest to uninstall the Windows service and reinstall it again after changing the  JAVA HOME  to point to the right Java version

User · Answer

I had the same problem  in user environment variable settings I was having JAVA HOME and PATH configured properly but it didn t work  As I update my system environment variables then it started to work

User · Answer

After struggling with this issue for some time and researching about it  I finally managed to solve it following these steps   1  install jdk version 12 2  Create new variable in systems variable 3  Name it as JAVA HOME and give jdk installation path 4  add this variable in path and move it to top  5  go to C  Program Files  86  Common Files Oracle Java javapath and replace java exe and javaw exe with the corresponding files with the same names from the pathtojavajdk bin folder  Finally  I checked the default version of java in cmd with  java -version  and it worked

User · Answer

I had the same issue  I have a bunch of Java versions installed and for some reason Java 1 7 was being used instead of Java 1 6  even though I specified in the path to use 1 6  C  jdk1 6 0 45 32 bin     I had to move the path of the JDK I wanted to use  1 6  to be the first entry in the PATH environment variable to make sure Windows uses 1 6 instead of 1 7   So  for example  the PATH environment variable before was   C  Program Files  x86      lt other entries gt  C  dev ant181 bin C  jdk1 6 0 45 32 bin   and after I moved the jdk to be first  it worked   C  jdk1 6 0 45 32 bin C  Program Files  x86      lt other entries gt  C  dev ant181 bin   I guess the Windows installer of Java 1 7 installed it to some other directory already in the PATH  thus getting used first instead of the specified custom PATH entry C  jdk1 6 0 45 32 bin

User · Answer

In Windows 8  you may want to remove  C  ProgramData Oracle Java javapath directory    from path   It solved my issue

User · Answer

Suppose you have install JDK 10 after JDK 8 and in the system environment variable set path like  C  ProgramData Oracle Java javapath  then Java version control by this path  it will ignore JAVA HOME even jdk 1 8 path set here So remove  C  ProgramData Oracle Java javapath  in path to get effect of JAVA HOME path

User · Answer

There s an additional factor here  in addition to the java executables that the java installation puts wherever you ask it to put them  on windows  the java installer also puts copies of some of those executables in your windows system32 directory  so you will likely be using which every java executable was installed most recently

User · Answer

In my case I had Java 7 and 8  both x64  installed and I want to redirect to java 7 but everything is set to use Java 8  Java uses the PATH environment variable       C  ProgramData Oracle Java javapath   as the first option to look for its folder runtime  is a hidden folder   This path contains 3 symlinks that can t be edited   In my pc  the PATH environment variable looks like this      C  ProgramData Oracle Java javapath C  Windows System32 C  Program   Files Java jdk1 7 0 21 bin    In my case  It should look like this      C  Windows System32 C  Program Files Java jdk1 7 0 21 bin    I had to cut and paste the symlinks to somewhere else so java can t find them  and I can restore them later    After setting the JAVA HOME and JRE HOME environment variables to the desired java folders  runtimes  in my case it is Java 7   the command java -version should show your desired java runtime  I remark there s no need to mess with the registry   Tested on Win7 x64

User · Answer

Set Path environment variable to your desired jdk bin directory

User · Answer

For my Case in  Path  variable there was a parameter added like  C  ProgramData Oracle Java javapath    This location was having java exe  javaw exe and javaws exe from java 8 which is newly installed via jdk exe from Oracle   I ve removed this text from Path where my Path already having  JAVA HOME  bin with it   Now  the variable  JAVA HOME  is controlling my Java version which is I wanted

User · Answer

I had Java 7 and 8 installed and I want to redirect to java 7 but the java version in my cmd prompt window shows Java 8  Added Java 7 bin directory path  C  Program Files Java jdk1 7 0 10 bin  to PATH variable at the end  but did not work out and shows Java 8  So I changed the Java 7 path to the starting of the path value and it worked  Opened a new cmd prompt window and checked my java version and now it shows Java 7

User · Answer

This issue is probably because of the earlier versions of Java installed in your System  First check your Environment Variables Carefully and remove all the Environment Variables related to the previous versions of JAVA and replace those paths to   C  Program Files Java  lt your new jdk version gt  bin

User · Answer

On Windows  the java executable uses the Windows Registry to locate the default version of Java to run   The copy of java exe to run is found by using the PATH environment variable  Unless you take steps to change this  by default a copy will be found in the Windows directory  Since this copy isn t in a Java runtime directory  it locates one by looking at the registry   So  you either need to modify the registry  or put the version of Java you want before the Windows directory in your PATH

User · Answer

Windows doesn t ignore anything  This is an issue with your setup  Windows just uses what you provide  It has no special knowledge of JAVA HOME   CLASSPATH has nothing to do with Windows  either  To Windows it s only an environmental variable that gets expanded to a folder location   Check your  PATH  environmental variable  It s what s making Windows find one before the other  The path  as the post you linked to said  should point to  JAVA HOME  bin  lt remainder of path gt   Again  the post you linked to gave you a way to set this using a batch file    For others who might not know this  The easiest way to inspect the  PATH  is to open a command prompt and type echo  PATH   You can also get there by right-clicking on Computer in the right pane of the Start Menu and choosing Properties  then Advanced System Settings  and the tne Environmental Variables button

[windows] Windows ignores JAVA_HOME: how to set JDK as default?

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