I've ran into an issue. I'm running on macOS Sierra (10.12.1). This .jar file I downloaded requires a JDK. So, I installed JDK8 (jdk180121). I was able to extract JDK8 .pkg without typing in my password (authenticate). I then tried to place the new folder into the proper place. However, it asks me to authenticate the JDK (aka asks for the password). I do not want to give my password, so, therefore, I can't place it in the proper location. However, I still need to open the .jar file I mentioned earlier. How can I point the .jar file to where the JDK8 is located?
OSX: 10.12.2
JDK: jdk180121
.jar: craftbukkit-1.11.2(.jar)
To launch with a specific JRE (You wouldn't need the JDK to just run an application) you can do it through the command line.
Open a terminal and navigate to the directory with the Java binary and launch this way:
java -jar path/to/jar/program.jar
I am having a problem in selecting home directory for JDK. Even though I have selected the following path: "C:\Program Files (x86)\Java\jre1.8.0_91", it keeps showing the error: "The selected directory is not a valid home for JDK". My java folder has two folders- bin and lib.
Window for selecting home directory
Kindly help me in selecting home directory.
Thank you!
You have currently located a JRE, or Java Runtime Environment. That does indeed contain a java executable and can launch JVMs, but it's not made for development, rather more as a "Java client". For example if you look into it's /bin folder, you won't find the javac executable needed to compile.
What you need is a JDK, or Java Development Toolkit. It contains all the JRE contains, with additional tools for development. You can find it for download on the Oracle website.
Your home directory will jdk not jre. If your jdk is installed properly then there will be a jdk folder. Try setting C:\Program Files (x86)\Java\jdk1.8.0_91\bin
Your home directory for JDK would be "C:\Program Files (x86)\Java\jre1.8.0_91\bin"
try this on windows to know the home of your jdk
c:\> for %i in (java.exe) do #echo. %~$PATH:i
Is it possible to bundle a JRE within an exported stand alone Java app? We have a very specific requirement to run a standalone AnyLogic Java app on a machine that does not have the latest Java version installed and due to company IT policies we will not be able to do so
Through some research I have found some sites to claim that they have already been doing it for Windows and Mac.
Using a bundled JRE on OSX
https://wiki.openjdk.java.net/display/MacOSXPort/How+to+embed+a+.jre+bundle+in+your+Mac+app
http://www.intransitione.com/blog/take-java-to-app-store/
My issue is that most of these posts refer to bundling an app for Mac OS x and requires that the jar files be created in an IDE like Eclipse. But since I use AnyLogic the jar files gets exported without myself being able to intervene. What I need is to change the command line code that runs the jar files and currently looks like this:
java -Xdock:name="AnyLogic Model" -Dnativewindow.awt.nohidpi=true -cp com.anylogic.engine.jar:com.anylogic.engine.nl.jar:lib/database/querydsl/querydsl-sql-codegen-3.6.3.jar -Xmx256m model6.Simulation $*
(Note: Code reduced for readability)
into something that I assume will pass the jre or JVM to be used as an argument to the java call. Or maybe set the directory to be used for java or something... as calling the java command on a machine without java installed renders nothing.
I have a very simple app, as well as a jdk plugin that I got from the moneydance app, which is a java app that runs on OSx with its own embedded jre, available here
https://www.dropbox.com/sh/1bedimsb0lj403t/AADYR7iFoBD4YiqS_RGZ2xAVa?dl=0
Thanks
A colleague of mine who is not on Stack Exchange gave me the answer so here goes, actually quite easy:
In order to meet my specific circumstances one just needs to include a jre inside the root of the folder that you supply to a client and then reference the the java executable in the execution file. The solution for Windows and Mac are slightly different so here goes:
On Mac
You can find the jre in the following folder. It is a hidden folder so if you Mac is not set to show hidded folders go to finder use command-shift-g and go to
/Library/Java/JavaVirtualMachines/
there should be a jdk folder and then navigate to
jdk1.8.0_45.jdk/Contents/Home/jre
On Windows
The location of the jre is in
c:\Program Files\Java\
you can see the location in the .bat file that AnyLogic creates automatically in line of code that looks like this:
#SET PATH_XJAL="%DISK_XJAL%\Program Files\Java\jre6\bin\java.exe"
Once you have the jre copy this folder to the same location as the stand alone java app. Then the only thing that remains is to change the referenced location in both mac command line executable and the windows.bat file
On Mac
Change from
java -Xdock:name="AnyLogic Model"
to
./jre/bin/java -Xdock:name="AnyLogic Model"
On Windows
Change from
#SET PATH_XJAL="%DISK_XJAL%\Program Files\Java\jre6\bin\java.exe"
to
#SET PATH_XJAL= \jre6\bin\java.exe"
Running the java app on both Mac and Windows will now be independent from the Java version on the machine or whether it is installed or not
another alternative is to compile your compiled application into an executable using Exe4J. It is not free but another advantage is that you send your client only a single exe-file, not a bunch of files. (Disclaimer: not tried with the internal AL7-dbase yet but it works fine when accessing external data).
I can't open or run my .jar file.
I just installed java, but I tried to open the .jar with other programs first, so the double-click defaults to something else and I can't change it back.
java -jar myfile.jar`
Above command returns:
'java' is not recognized as an internal or external command, operable program or batch file.
Is there a way I can still open/run this?
e: OS is Windows 8.
Also, I downloaded the .jar file; didn't create it myself (if that's relevant)
Not sure if it contains an executable (but I think it does).
you can use the command prompt:
javaw.exe -jar yourfile.jar
Hope it works for you.
There are two different types of Java to download: The JDK, which is used to write Java programs, and the RE (runtime environment), which is used to actually run Java programs. Are you sure that you installed the RE instead of the SDK?
Use cmd prompt and type
java -jar exapmple.jar
To run your jar file.
for more information refer to this link it describes how to properly open the jar file.
https://superuser.com/questions/745112/how-do-i-run-a-jar-file-without-installing-java
You may have several JDKs installed in your PC. Some older JDK installers also copy some java files such as java.exe, javaw.exe into C:\Windows\System32 folder.
I had a similar issue, and searched the internet for a solution and none of the suggestions didn’t open by double clicking the .jar file.
In my case the reason is I have multiple JDK & JRE versions installed on my computer. Since I am a software developer working with several different versions for different clients I need to use multiple JDKs in my PC (Windows 10 Pro). So I do not want to change the system variables (i.e. JAVA_HOME, JRE_HOME or PATH), instead I use command prompt to run java in user process whenever I wanted to use a different version.
When installing JDK it registers the .jar file association with latest version we installed in the PC. If you right click on the .jar icon and select properties, it will show that file opens with “Java(TM) Platform SE Binary”. If we look at the registry key: HKEY_CLASSES_ROOT\jarfile\shell\open\command, it will point to latest JDK version.
It is not a good idea (sometimes annoying) to change the registry key every time I want to run an app build from a different version.
So in my situation it is impossible to just double click the .jar file to execute it. But instead I found a work around solution myself.
Scenario:
Multiple JDKs (1.7, 1.8, 9.0, 10.0, 11.0, and 12.0)are installed in the PC, so the latest installed was 12.0.
Problem
Want to double click an executable .jar developed using JDK 1.8 and didn’t work
This is my work around solution:
Create a shortcut for the .jar file that you want to open.
Right click the shortcut icon and select properties -> Shortcut tab
Change the text in the target (for example "D:\Dev\JavaApp1.8.jar")
To
"C:\Program Files\Java\jdk1.8.0\bin\javaw.exe" -jar
"D:\Dev\JavaApp1.8.jar"
Then click ok Double click the shortcut.
It should now open the app.
I was having this same issue for both Windows 8 and Windows Server 2012 configurations.
I had installed the latest version of JDK Java 7 and had set my **JAVA_HOME**system env variable to the jre folder: *C:\Program Files (x86)\Java\jre7*
I also added the bin folder to my **Path** system env variable: *%JAVA_HOME%\bin*
But I was still having problems with double clicking the executable jar files. I found another system env variable OPENDS_JAVA_ARGS that can be used to set the optional properties for javaw.exe. So I added this variable and set it to: -jar
Now I am able to run the executable jar files when double clicking them.
In cmd you can use the following:
c:\your directory\your folder\build>java -jar yourFile.jar
However, you need to create you .jar file on your project if you use Netbeans. How just go to Run ->Clean and Build Project(your project name)
Also make sure you project properties Build->Packing has a yourFile.jar
and check Build JAR after Compiling
check Copy Depentent Libraries
Warning: Make sure your Environmental variables for Java are properly set.
Old way to compile and run a Java File from the command prompt (cmd)
Compiling: c:\>javac Myclass.java
Running: c:\>java com.myPackage.Myclass
I hope this info help.
Go to your java directory,
Copy this path
C:\Program Files\Java\jdk1.8.0_40\bin
Right click on my computer , click properties, then go to "Advanced system settings"
click , Environment variables.
go to "System variables" table, find an entry named "path".
Double click it and go to the end, put a semicolon and paste your path, apply and ok.
It should run now.
first of all, we have to make sure that you have downloaded and installed the JDK.
In order to download it click on the following link
http://www.oracle.com/technetwork/java/javase/downloads/jdk8-downloads-2133151.html
(Do not forget to check "Accept License Agreement", before you choose the version you want to download)
For Windows OS 32-Bit (x86) choose "jdk-8u77-windows-i586.exe"
For Windows OS 64-Bit (x64) choose "jdk-8u77-windows-x64.exe"
Install the file that is going to be downloaded. During the installation, pay attention, because you have to keep the installation path.
When you have done so, the last thing to do, is to define two "Environment Variables".
The first "Environmental Variable" name should be:
JAVA_HOME
and its value should be the installation path
(for example: C:\Program Files\Java\jdk1.8.0_77)
The second "Environmental Variable" name should be:
JRE_HOME and its value should be the installation path
(for example C:\Program Files\Java\jre8)
As soon as you have defined the Environment Variables, you can go to command prompt (cdm) and run from every path your preferred "java.exe" commands. Your command line can now recognize your "java.exe" commands.
:)
P.S.: In order to define "Environment Variable", make a right click on "This PC" and select "properties" from the menu. Then the "System" window will appear and you have to click on "Advanced system settings". As a consequence "System properties" window shows. Select the "Advanced" tab and click on "Environment Variables" button. You can now define the aforementioned variables and you're done
You must create a manifest file and specify your class that has the main method. you can build your jar file with manifest file as a parameter.
jar cfm MyJar.jar Manifest.txt MyPackage/*.class
Manifest-Version: 1.0
Archiver-Version: Plexus Archiver
Created-By: Apache Maven
Built-By: Cakes
Build-Jdk: 1.6.0_04
Main-Class: com.foo.App
An easy way to execute .jar files is to create a batch file.
Let's say you placed your jar file on your Desktop;
#echo OFF
java -jar C:\Users\YourName\Desktop\myjar.jar
Copy this code to a .txt file, modify "YourName" and save as "myjar.bat". Then whenever you double click, the jar file will be executed.
Hope this helps.
Short trick: after I only REMOVED SPACES from names of the folders, where the .jar file was, double-clicked worked and the file executed.
In Netbeans please delete current you create the jar file and on the project explore of Netbeans please clean and build 2 or 3 times and right the project folder in project explore and build the jar file.
I had this problem a while back and the solution was really easy.
Just uninstall the current version of Java, download an older one, then uninstall the older and install the latest again.
For example: Java 8 Update 73 current install Java 7 Update 95.
How it works: Java's registry keys were messed up, and when you install the older version they get fixed.
If the intention of the question is to view the contents of the JAR file, then the following java command would help.. (provided, JDK location is added to the environment variables.)
Windows Command prompt> jar tvf yourJarFile.jar
Example:
jar tvf log4j-extras-1.2.17.jar
Reference: http://docs.oracle.com/javase/tutorial/deployment/jar/view.html
I downloaded the latest JDK 7u10. Once you do that, try running your jar, It should execute.
I'm trying to bundle a JRE with my jar file so that I can run my application on any windows computer, regardless of if it has Java or not. The jsmooth manual says:
For the option to work correctly, you have to put a JRE in a directory near the EXE (generally in a subdirectory called "jre" or whatever). Once the exe is generated, it will FIRST try to locate the JRE at the location mentioned. If it can't be found there, then it will fallback in the normal jre look-up mode (search for a jre or a jdk in the Windows registry or in commonly-used environment variables). There is no JVM-version check when using a bundled JRE, as the packager is supposed to bundle a suitable JVM for the application.
Does this mean that the jre subfolder should be included in the jar, be its own separate jar, or put in the folder that comes along with the exe? If it is supposed to be in a folder with the exe, how can I specify the relative path to the jre subfolder?
My directories are as follows:
setup/
-jre/
-myprogram.exe
I tried using ..\jre, .\jre, ..\setup\jre in the GUI screen, but none of them worked.
Any ideas or leads would be greatly appreciated. Thanks so much!
EDIT: when I tried jre (and ..\jre I think), I got the following error message from windows when I tried running it "MyProgram.exe has stopped running." When I look at the problem details, it says APPCRASH and the fault module name is jvm.dll
just put the "jre" folder next to the exe, and write "jre" (without quotes) in the GUI of jsmooth
As an alternative, I would suggest using the mature open source project, NSIS. You could write an installer that would download and install the JRE, and then create shortcuts to run your program.
Here are some useful links:
http://nsis.sourceforge.net/Simple_Java_Runtime_Download_Script
http://nsis.sourceforge.net/Java_Launcher
Have you tried Launch4J (http://launch4j.sourceforge.net/), we switched from JSmooth to this a while ago, as it was more up to date and had more features.
But, put the jre folder in the same folder as the .exe, then use jre\ as the path to it. You'll need to make sure the working folder of the .exe is the installation folder though. And make sure you have a full JRE in the jre folder.