I am using eclipse for a coding course at school, and I am required to install Violet UML Editor http://alexdp.free.fr/violetumleditor/page.php to create PDF of classes.
Anyway, I downloaded a .jar file. My mac doesn't like that it's from an unverified developer so I must manually allow it to open in system preferences. The .jar opens to the loading tab but it wont open the program.
'''Javac -version''' in terminal says javac 16.02. As far as I know, JDK holds JRE which I need to run Violet. To be safe I installed JRE from Oracle which was a JDK 8 file but it didn't work so I just deleted it.
UPDATE: Using terminal and entering '''java -jar violetumleditor-3.0.0.jar''' I get the error code
Error: Unable to access jarfile violetumleditor-3.0.0.jar
the .jar is located on my desktop, it should be found
Also yes I did a fresh 3.0 version install to try and the same thing.
UPDATE 2:
java -version gives
java version "16.0.2" 2021-07-20
Java(TM) SE Runtime Environment (build 16.0.2+7-67)
Java HotSpot(TM) 64-Bit Server VM (build 16.0.2+7-67, mixed mode, sharing)
Thinking it's a permission with accessing desktop issue.
There is a bug open for this:
https://sourceforge.net/p/violet/bugs/69/
I personally don't think it would be fixed anytime soon.
I can recommend two alternative tools such as:
https://www.visual-paradigm.com/solution/uml/uml-tool-for-mac/
https://gitmind.com
Related
I am new to this community and have this problem:
I downloaded the IntelliJ IDEA IDE for Windows (x64) and i can not run a single line of code, there always comes the error message:
Cannot start compiler: the SDK is not specified for module "XY".
Specify the SDK at Project Structure dialog.
I followed the instructions on their Website and downloaded the SDK for Windows x64 here.
Now I used to set up everything, but it doesn't work as planned. In fact it is the same error as before.
I am glad for any help, thanks! :)
First make sure you have installed JDK on your system. Open the command line and type: java -version.
You should get something like:
java version "1.8.0_111"
Java(TM) SE Runtime Environment (build 1.8.0_111-b14)
Java HotSpot(TM) 64-Bit Server VM (build 25.111-b14, mixed mode)
Then open your project in IntelliJ IDEA and go to Project Structure → Project tab (Ctrl+Alt+Shift+S on Windows OS) and add new JDK by providing its local path like C:\Program Files\Java\jdk1.8.0_60:
I'm having a problem of installing java SE runtime 6 on mac, without that, I can't open my eclipse or install Intellij. However, I download the .dmg through an Apple - Java link, but it just doesn't install!
And there's no error message, just the page of falling installation.
I really don't know how to solve it.
This is kind of an update of my problem... I used to have Java SE runtime 6 and tried to install jdk 1.8 and failed. Same picture appeared. Just said failed installing with no error messages. I guessed might be a conflicts? and deleted Java 6 and basically can't run eclipse & Intellij (this solved thought) I still have java 1.7 here.
I just can't figure out why I can't install (or reinstall) java 1.6 or java 1.8. What could be the problem?
Some system updates:
if I do: "which java":
/usr/bin/java
if "echo $JAVA_HOME":
/Library/Java/JavaVirtualMachines/jdk1.7.0_51.jdk/Contents/Home
if java -version:
java version "1.7.0_51"
Java(TM) SE Runtime Environment (build 1.7.0_51-b13)
Java HotSpot(TM) 64-Bit Server VM (build 24.51-b03, mixed mode)
What could be possibly wrong?!!!????
God
You need to get Java directly from Oracle (http://www.oracle.com/technetwork/java/javase/downloads/index.html) as Apple stopped supporting Java some time ago. Unless you have pressing reasons for using Java 6 I suggest also installing at least Java 7, although you can have all three versions installed and select the appropriate version for the app you want to run/develop.
Edit Also, if you want to use Eclipse or IntelliJ (go for IntelliJ) you want to get the JDK and not the "runtime" (JRE).
How do I get JNLP working for OpenJDK 7 on a Ubuntu machine?
I'm trying to get the source code linked to at http://www.bugaco.com/bioinf/clusterer/ with the text "Download sources" to run on my machine.
Currently, when I try running
javac -cp ".:l2fprod-common-all-7.3.jar:jfreechart-1.0.17/lib/jfreechart-1.0.17.jar" com/bugaco/mioritic/impl/module/project/Main.java
it is giving me the error
./com/bugaco/ui/LoadBean.java:11: error: package javax.jnlp does not exist
import javax.jnlp.FileOpenService;
^
(and many other errors)
which I assume indicates that I need to install JNLP, along with other packages I'll have to install when I get JNLP fixed.
Based on Mike Clark's answer https://stackoverflow.com/a/12608844/38765
I assumed that "Demos and Samples" is the way to install JNLP for Open JDK 7.
I'm on Ubuntu, so I'm trying to use the "Ubuntu way" to install it. I installed openjdk-7-demo , which describes itself as "Java runtime based on OpenJDK (demos and examples)".
It's still giving the error described above. What have I done wrong, or forgotten to do?
I tried browsing the tag wiki for java. The only non-video resource that looked relevant to me in "Beginners' resources" was "The Java Tutorials". The only link relevant from there was "Learning the Java Language". It had a section on packages, but that's only on how to create your own, rather than how to install other peoples' packages.
I'm using Ubuntu 12.04 (precise) 64-bit, and Java 7
java version "1.7.0_55"
OpenJDK Runtime Environment (IcedTea 2.4.7) (7u55-2.4.7-1ubuntu1~0.12.04.2)
OpenJDK 64-Bit Server VM (build 24.51-b03, mixed mode)
If you want to use JNLP with OpenSDK, you need the IcedTea implementation of JNLP.
In Ubuntu, install the "icedtea-netx" package.
The libraries you need will be in /usr/share/icedtea-web/.
Just use $ javaws xxxxx.jnlp .
It works to me on :
(open-jdk-7 + Ubuntu 14.04)
I have to start by saying that I have just switched to Ubuntu from Windows and I am new to Linux in general. Coming from Windows, I really am not familiar with how exactly the permissions work, the Linux file system, where I am able to create folders that I can use without the sudo command etc.
I use eclipse on a daily basis for android development and other simple java swing projects. I was able to download and extract the latest available version of eclipse (kepler) to this path: /opt/eclipse. Inside this directory is the eclipse executable and other eclipse related files.
I also installed the JDK and verified with the java -version command. It says:
java version "1.7.0_25"
Java(TM) SE Runtime Environment (build 1.7.0_25-b15)
Java HotSpot(TM) 64-Bit Server VM (build 23.25-b01, mixed mode)
I am running on a 64 bit CPU architecture so both programs are the 64 bit version.
Now, my problem is that if I open eclipse from the Unity dash or from the file explorer, it give me this error:
However if I run sudo eclipse in the terminal, everything runs just fine as long as I do it as the super user. I have a hunch that the JDK is installed in a folder that is restricted to normal users and only works if I run the sudo command but this is just a hunch. As I said, I am new to Linux and I am not really sure what I am doing wrong here, I am learning as I go. I need a good explanation as to how to make it start from the Unity dock without the sudo command. Thanks in advance!
You'll want to use the chmod command from the terminal to change the permissions on the Java folder. See this link for more information:
http://www.linux.org/threads/file-permissions-chmod.4094/
Well after running the which java cmd, I noticed that the path to the JDK from the eclipse.ini file was not pointing to the correct location. I fixed the path and now it works. I don't know how the sudo cmd overrides the eclipse.ini path to JDK but well, it works
I am trying to setup Android build environment for my Mac 10.8.3
I dont understand, Apple provide instructions on how to revert mac back to Java 1.6 here :
http://support.apple.com/kb/HT5559?viewlocale=en_US&locale=en_US
They are clear instructions that I followed.
Yet when I still get the following :
unknown-98:fe:94:3f:92:ce:~ newuser$ java -version
java version "1.7.0_13"
Java(TM) SE Runtime Environment (build 1.7.0_13-b20)
Java HotSpot(TM) 64-Bit Server VM (build 23.7-b01, mixed mode)
Please please help me solve this problem.
The Mac comes with, and occasionally updates, JDKs 1.4 through 1.6. You can see the versions you have installed in this directory:
/System/Library/Frameworks/JavaVM.framework/Versions
This is how you change the JDK
1. Command Line Java
My Java is coming from /usr/bin/java, which points off to one of the versions in the 'Versions' dir described above. To change the version of the JDK you're getting here, use the Java Preferences application under Applications -> Utilities -> Java:
You can drag the JDK you'd like to the top and it should be reflected immediately from the command line:
hostname% java -version
java version "1.5.0_16"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.5.0_16-b06-284)
Java HotSpot(TM) 64-Bit Server VM (build 1.5.0_16-133, mixed mode)
hostname% java -version
java version "1.6.0_07"
Java(TM) SE Runtime Environment (build 1.6.0_07-b06-153)
Java HotSpot(TM) 64-Bit Server VM (build 1.6.0_07-b06-57, mixed mode)
2. Scripts and Applications That Use Java
Generally, other built-in applications or one that you install will use the JAVA_HOME environment variable to pick a JDK. By default, you won't have this set, and Mac-specific versions of startup scripts will usually create one by using the CurrentJDK link in the Java 'Versions' directory. The steps to add environment variables are documented in this article, but I can save you a little time. Create a directory .MacOSX in your home directory and add a file called environment.plist. Here are the entire contents of my ~/.MacOSX/environment.plist file:
<!-- When changing this, also run Java Preferences and change there. -->
<key>JAVA_HOME</key>
<string>/System/Library/Frameworks/JavaVM.framework/Versions/1.6/Home</string>
With this value set, all processes started as you will have JAVA_HOME available to them. Since this file is read when you log in, you'll have to log out/in once after you create or edit this file.
Special case: NetBeans
The IDE I use is NetBeans, but the following idea probably applies to other large applications as well. When NetBeans is installed, it will pick a JDK to use and hard code it in a properties file. If you want it to rely on the JAVA_HOME that you're now setting in environment.plist, you just need to edit one file. Edit this file:
/Applications/NetBeans/NetBeans\ 6.5.app/Contents/Resources/NetBeans/etc/netbeans.conf
..and you can set the JDK by changing this line:
netbeans_jdkhome=$JAVA_HOME
Note that, as the netbeans.conf file points out, you can always force a different JDK to be used by specifying it on the command line when starting the IDE. For your copying and pasting pleasure, here is the command to use to start it from terminal (I'm giving the 'help' option in this case). If you're using a different version, autocomplete ought to help with the version part of the path:
/Applications/NetBeans/NetBeans\ 6.5.app/Contents/MacOS/netbeans
--help
Recap
To recap, you can switch JDKs for your whole system by using the Java Preferences application along with changing the value in your environment.plist file. To switch on the fly, use the Preferences app and set a new value for JAVA_HOME in whatever terminal you're using, though some apps like NetBeans will still pick up the system value and you should specify the desired JDK on the command line.
Resources where I found this solution: https://blogs.oracle.com/bobby/entry/switching_jdks_on_mac