I had Java working with Eclipse but I had to set up up Javac on the command line. I set the environment variables shown below but it doesn't work. Eclipse has now also stopped working.
Any help would be great!
Thanks!
Ok so I went a bit crazy and uninstalled/reinstalled loads of different jdk's. Finally one installed completely when I saved it directly to my C drive. I updated my environment variables for eclipse and for my command prompt and voila! Java is now working! I guess the problems with the space between Program Files will haunt me forever so I shouldn't save anything there anymore.
Related
I recently decided to start trying Android app development, so I downloaded the Java SE Development Kit 8 (x86) for Windows (I got Windows 8 64bit, but my guide recommends getting the 32bit one), the Android SDK, and the Eclipse IDE for Java Developers (x86).
However, my Eclipse won't launch when I double click eclipse.exe! Instead, I get the following error message:
I tried adding Java to my Path variable in my Environment variables as suggested in some of the solutions I looked up, but it still doesn't launch properly.
Anyone know what else I can try? Also, if possible, please do not use super-technical vocabulary as I'm new to these kinds of stuff and will not understand you...thank you haha :D
I had the same issue and was trying to install different versions of JDK: 1.6, 1.7, 1.8.
It didn't help much.
The problem was resolved when I changed PATH variable by removing
C:\ProgramData\Oracle\Java\javapath;
In command prompt I also ran following commands:
set JAVA_HOME=C:\Program Files\Java\jdk1.8.0_25
set PATH=C:\Program Files\Java\jdk1.8.0_25\bin;%PATH%
But I think the most important was to remove C:\ProgramData\Oracle\Java\javapath; from the PATH.
I know exactly how to solve your problem. Go to search and put in environment, a prompt will come up and ask you to "Edit environmental variables for your account" click that and a window will pop up. There will be the current paths which are running on the top (you should have your JDK version running, mine is 1.8) and on the bottom part there will be paths to choose from. Select (on the bottom part) the java path and delete it, then click okay. This should work.
If it didn't work, You may also add a new path to the java bin folder which worked for me.
Here is an alternative:
As described here, make sure that you have the -vm option set in your eclipse.ini file.
It must be an absolute path and on 2 separate lines:
-vm
<Absolute Path>\javaw.exe
Save your .ini and relaunch Eclipse
One line answer, remove 'C:\ProgramData\Oracle\Java\javapath;' from your path variable. It will start to work.
Most errors with starting eclipse happen due to multiple JRE or JDK version which makes the installer go nuts.
Solution: Go to Control Panel -> Uninstall Programs
If you're running 64-bit java, then uninstall all Java without the 64bit indicator. If 32-bit, then uninstall all that have 64-bit
It works like magic!
What worked for me was having installed adoptopenjdk11 using Chocolatey package manager:
choco install adoptopenjdk11
Just installed Eclipse Mars on Lubuntu 14.
While scrolling up and down in the console or editor - I get a kind of black rectangle covering some text, or the test is kind of twisted visually (lines become non-straight).
Anyone know how to fix this?
Haven't had this in previous versions of Eclipse on the same comp.
Exactly the same thing happened to me installing Eclipse Mars on Lubuntu 14 Toshiba Satellite notebook. I was really looking forward to the day of the Eclipse annual release of Mars and I was disappointed to be so disappointed with 5 minutes on installing.
Anyway, I can confirm that setting environment variable SWT_GTK3=0 by way of export does circumvent the problem. If you open a terminal and type "export SWT_GTK3=0" in the shell, you will also need to start Eclipse via the command line while remaining in the same shell. If you start Eclipse via a desktop launch icon, Eclipse will not see the SWT_GTK3 environment variable and the problem will persist. This is because environment variables in Linux are per-process and an application launched from the desktop is running in a different process to a shell process in a terminal.
So that Eclipse always sees the correct SWT_GTK3 environment variable after starting your machine, best you export SWT_GTK3=0 globally. To do this on Lubuntu, follow these steps:
Open a terminal window
Open the file /etc/profile for editing as sudo (e.g. sudo gedit /etc/profile)
Add the line
export SWT_GTK3=0
at the end of the file.
Save file, quit editor and reboot your machine.
Launch Eclipse Mars and hopefully your scrolling problem is fixed.
This worked for me but, as always, YMMV.
btw. You can check the SWT-GTK3 environment variable was exported after rebooting by opening a terminal window and typing the 'env' command. You should see
SWT_GTK3=0 in the list of environment variables and values that are displayed.
It seems like a new bug:
https://bugs.eclipse.org/bugs/show_bug.cgi?id=469027
It happens also under Kubuntu. Anyway the workaround, at least for me, is to export the following environment variable:
SWT_GTK3=0
I solved my problem in Ubuntu 15.04 with Eclipse Mars by adding the following code in the start of data in the Exec option in eclipse.desktop (/home/.local/share/applications):
Exec=env UBUNTU_MENUPROXY=0 SWT_GTK3=0 /usr/lib/jvm/...
In that way you leave intact your OS preferences and act only on Eclipse starting script.
I updated PyDev (Eclipse) yesterday and now it is telling me that None, name and other reserved words/builtin functions are invalid, but the script runs just fine. I have read on this forum that the problem deals with incorrectly importing the built-ins. I have tried changing the interpreter and re-adding it but no luck. Can somebody help me please?
The errors:
Undefined variable main
Undefined variable None
Undefined variable int
Undefined variable eval
I am running eclipse Juno and PyDev 2.7.4. also, I notice that the errors only appear after the PyDev code analysis ends.
This happened to me as well, the problem was that eclipse couldn't find python.
My fix:
in Eclipse:
Window > Preferences > PyDev > Interpreter - Python
The settings here were blank. I clicked 'Auto Config', which suggested to me the path to python. I chose it, restarted eclipse, and problem solved.
Well, I see nobody has come up with some idea. I found out by myself so I'm posting how I solved it here; maybe it'll help somebody:
The problem was that I had recently changed my local machine's name, but PyDev was still looking for localhost when it tried to connect to the Python Shell. I just updated the files in my operating system containing the hostname, and voila (the automatic wizard did not update all the files for some reason, so I had to do it manually).
Every time I try to run a .py module it just opens in Firefox.
I'm running Aptana in OS X 10.6
If you installed and configured PyDev, it should work.
Make sure you use the correct "Run" command. Prefer "Run as Python module", avoid "Run on Server".
If that doesn't help, edit your question and give an exact example what you do (which menus/buttons you click, etc).
See: http://pydev.org/manual_101_run.html for details on running a Python module (make sure you read the whole getting started: http://pydev.org/manual_101_root.html which should help you in getting your environment setup and gives some tips to properly use PyDev).
I used a same workspace for both python and java , and met the same problem.
If I change a new workspace, the Run As works. So i think there is something wrong with workspace settings.
I'm having a very weird issue with the command line and running Ant. I point the path variable at the location of my Ant bin directory (C:\Ant\bin) and when i go into a command window and type PATH it shows the location in it. But when I go to run Ant by typing "ant" it does nothing and states that it isn't recognized. But when I go to the run window (Windows+R) and type "ant" it runs it.
I have restarted Windows twice and the problem still persists. I am running Windows Vista Ultimate with SP1 installed. I have tried "Running as Administrator" with no difference.
Any one experience anything like this before?
Sometimes you can set a system-wide (or even just personal) Environment Variable and it'll cure it, as opposed to just setting it in your shell.
Go to the Control-panel, then System, then Advanced, and look for the button on Environment Variables. From there, you can follow your nose.
Good luck.
Ant also depends on Java to be on the path. Do you have that?
I would also check to make sure the environment variables ANT_HOME and JAVA_HOME are set up properly in the console.
Is there any chance that the command window you are trying to run Ant in is a different window to the cmd windwo where you set up and verify that its in the path? If the PATH is updated after a cmd window is already open it won't recongnise the change. Not clear if that might be your issue.
If you are in the dir C:\Ant\bin and type "ant" does it recognise it?