Setting the correct PATH for Eclipse

Question

I recently changed my path so I could follow along in the Head First Java book and I had Eclipse before  Now when I try to get onto Eclipse again it won t open because it says it can t find a JRE or JDK to use in my directory  I have moved the JDK file around  I have jdk1 8 0 60 downloaded  So how can I get Eclipse to open again

User · Answer

For me none worked  I compared my existing eclipse ini with a new one and started removing options and testing if eclipse worked   The only option that prevented eclipse from starting was -XX  UseParallelGC  so I removed it and voil

User · Answer

I have resolved this problem by adding or changing variables in environment variables  Go to Win7 -  My Computer -   Properties -   Advanced system settings -  environment Variables   If there is no variable JAVA HOME  add it with value of variable  with route to folder where your JDK installed  for examle C  Program Files Java jdk-11 0 2 If there is no variable PATH or it have another value  change the value of variable to C  Program Files Java jdk-11 0 2 bin or add variable PATH  with this value   Good Luck

User · Answer

Go to System Properties  gt  Advanced  gt  Enviroment Variables and look under System variables  First  create set your JAVA HOME variable  Even though Eclipse doesn t consult the JAVA HOME variable  it s still a good idea to set it  See How do I run Eclipse  for more information   If you have not created and or do not see JAVA HOME under the list of System variables  do the following    Click New    at the very bottom For Variable name  type JAVA HOME exactly For Variable value  this could be different depending on what bits your computer and java are    If both your computer and java are 64-bit  type C  Program Files Java jdk1 8 0 60 If both your computer and java are 32-bit  type C  Program Files Java jdk1 8 0 60 If your computer is 64-bit  but your java is 32-bit  type C  Program Files  x86  Java jdk1 8 0 60    If you have created and or do see JAVA HOME  do the following    Click on the row under System variables that you see JAVA HOME in Click Edit    at the very bottom For Variable value  change it to what was stated in  3 above based on java s and your computer s bits  To repeat    If both your computer and java are 64-bit  change it to C  Program Files Java jdk1 8 0 60 If both your computer and java are 32-bit  change it to C  Program Files Java jdk1 8 0 60 If your computer is 64-bit  but your java is 32-bit  change it to C  Program Files  x86  Java jdk1 8 0 60    Next  add to your PATH variable   Click on the row under System variables with PATH in it Click Edit    at the very bottom If you have a newer version of windows    Click New Type in C  Program Files  x86  Java jdk1 8 0 60 OR C  Program Files Java jdk1 8 0 60 depending on the bits of your computer and java  see above     Press Enter and Click New again  Type in C  Program Files  x86  Java jdk1 8 0 60 jre OR C  Program Files Java jdk1 8 0 60 jre depending on the bits of your computer and java  see above again     Press Enter and press OK on all of the related windows  If you have an older version of windows    In the Variable value textbox  or something similar  drag the cursor all the way to the very end Add a semicolon     if there isn t one already C  Program Files  x86  Java jdk1 8 0 60 OR C  Program Files Java jdk1 8 0 60 Add another semicolon     C  Program Files  x86  Java jdk1 8 0 60 jre OR C  Program Files Java jdk1 8 0 60 jre    Changing eclipse ini   Find your eclipse ini file and copy-paste it in the same directory  should be named eclipse 1  ini  Rename eclipse ini to eclipse ini old just in case something goes wrong Rename eclipse 1  ini to eclipse ini Open your newly-renamed eclipse ini and replace all of it with this   -startup plugins org eclipse equinox launcher 1 2 0 v20110502 jar --launcher library plugins org eclipse equinox launcher win32 win32 x86 1 1 100 v20110502 -product org eclipse epp package java product --launcher defaultAction openFile --launcher XXMaxPermSize 256M -showsplash org eclipse platform --launcher XXMaxPermSize 256m --launcher defaultAction openFile -vm C  Program Files Java jdk1 8 0 60 bin javaw exe -vmargs -Dosgi requiredJavaVersion 1 5 -Xms40m -Xmx1024m    XXMaxPermSize may be deprecated  so it might not work  If eclipse still does not launch  do the following    Delete the newer eclipse ini Rename eclipse ini old to eclipse ini Open command prompt type in eclipse -vm C  Program Files  x86  Java jdk1 8 0 60 bin javaw exe   If the problem remains  Try updating your eclipse and java to the latest version  8u60  1 8 0 60  is not the latest version of java  Sometimes  the latest version of java doesn t work with older versions of eclipse and vice versa  Otherwise  leave a comment if you re still having problems  You could also try a fresh reinstallation of Java

User · Answer

Eclipse folder has an initialization file which is used by eclipse on launch Double click it is named as eclipse ini  Add the following lines in eclipse ini file  Where the vm defines the path of JVM with which we want eclipse to use   -vm C  Program Files Java jdk1 8 bin javaw exe   Make sure you have add the above lines separately and above the following line   --launcher appendVmargs -vmargs

User · Answer

There are working combinations of OS  JDK and Eclipse bitness  In my case  I was using a 64-bit JDK with a 32-bit Eclipse on a 64-bit OS  After downgrading the JDK to 32-bit  Eclipse started working   Kindly use one of the following combinations   32-bit OS  32-bit JDK  32-bit Eclipse  32-bit only   64-bit OS  32-bit JDK  32-bit Eclipse  64-bit OS  64-bit JDK  64-bit Eclipse  64-bit only

User · Answer

Like Abob said      Eclipse doesn t consult the JAVA HOME variable   You should specify where Eclipse should find your JDK in the file eclipse ini  Specifically  the following parameter  note that it is 2 separate lines in the ini file    -vm C  Java JDK 1 8 bin javaw exe   or wherever your javaw exe happens to be   Note  The format of the ini file is very particular  make sure to consult https   wiki eclipse org Eclipse ini to ensure you get it exactly right

User · Answer

I am using Windows 8 1 environment  I had the same problem while running my first java program after installing Eclipse recently   I had installed java on d drive at d  java  But Eclipse was looking at the default installation c  programfiles java  I did the following    Modified my eclipse ini file and added the following after open   -vm d  java jdk1 8 0 161 bin   While creating the java program I have to unselect default build path and then select d  java    After this  the program ran well and got the hello world to work

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