I'm developing an Java application using Netbeans and Maven. I'm struggling a lot to run the project as standalone application. Launching the project from Netbeans is all fine but running the executable jar yields an error (failing to load a data file).
I need to know exactly which command(s) Netbeans is executing to run the application. However, the output window of Netbeans only shows me what the application writes "back". Is there a way to figure out/display the command(s) that Netbeans is using to run the project?
Thanks
EDIT: Running the java application and loading files is not the issue here. I'm able to run the application and the libraries are loading correctly. The issue here is to understand how Netbans runs the application (by looking at the commands that are executed).
Netbeans outputs the command it invokes as the very first line of the output.
I use Netbeans 8.2 and that's how it looks like when I hit big green Run button in maven project:
The first line reads (formatted for better readablility):
cd D:\test;
"JAVA_HOME=C:\\Program Files\\Java\\jdk1.8.0_112"
"M2_HOME=C:\\Program Files\\apache-maven-3.3.3"
cmd /c "\"\"C:\\Program Files\\apache-maven-3.3.3\\bin\\mvn.cmd\"
-Dexec.args=\"-classpath %classpath com.test.AppStarter\"
-Dexec.executable=\"C:\\Program Files\\Java\\jdk1.8.0_112\\bin\\java.exe\"
-Dexec.workingdir=D:\\test\\target\\dist
-Dmaven.ext.class.path=\"C:\\Program Files\\NetBeans 8.2\\java\\maven-nblib\\netbeans-eventspy.jar\"
-Dfile.encoding=UTF-8
org.codehaus.mojo:exec-maven-plugin:1.2.1:exec\""
From that line I can tell that Netbeans:
goes to the project's directory
sets environment variables (JAVA_HOME and M2_HOME)
then executes cmd that executes mvn (by its full path)
with bunch of -D arguments (which specify working directory and AppStarter as a class to execute)
and exec-maven- plugin with target exec.
When NetBeans compiles a program it creates a folder-hierarchy with compiled .class files. When creating a JAR archive ZIPs those into the archive. When executing the program, (or debugging,) NetBeans runs the .class files off the folders, not in the JAR file.
These could cause different problems, like different PATH. This can cause "file not found" errors with relative paths.
what is your operatingsystem?
windows:
then wmic may be the tool, which could show you the complete commandline. you will find examples here command line of process by name
linux:
try
ps -ef | grep java
Related
I want to run my Java code in remote server with external jar file. I referred to this tutorial and run IntelliJ IDE to generate a jar file of my whole project. Now I can run the following code in local terminal successfully.
javac -cp /Users/natsuapo/out/artifacts/main_jar/main.jar: new_server_try.java
java -cp /Users/natsuapo/out/artifacts/main_jar/main.jar: new_server_try
The code will run successfully. However, when I try the same thing in server. The compile process can be finished without any errors or warnings.
javac -cp /Users/natsuapo/out/artifacts/main_jar/main.jar: new_server_try.java
I have checked that the class file new_server_try.class is generated in the directory.
However the second step will return error as Could not find or load main class new_server_try and I am not sure why this happens.
on the second command try giving the full package name .. like shown below
java -cp "/Users/natsuapo/out/artifacts/main_jar/main.jar:lib/*" my.package.MainClass
also with operating system the command differs, check below
Windows
java -cp "Test.jar;lib/*" my.package.MainClass
Unix
java -cp "Test.jar:lib/*" my.package.MainClass
I have a project file which includes a jar file(monix.jar) and some data(models, plugins, ...). Developers didn't provide source code of it and I need to run it.
I'm working in the eclipse env and I tried this steps:
extracted it in my eclipse workspace(it was extracted under a folder named monix)
in the eclipse:Run > External Tools > External tools Configurations
set location in the Main tab to: D:\eclipse workspace\monix\data\gate\plugins\ANNIE\build.xml (and ofcourse I tried this path too: D:\Program Files Project\Java\bin\java.exe) by Brows File System button.
then set Working Directory to the path of project folder. D:\eclipse workspace\monix by Brows File System button.
Developers have provided a syntax for running it ($ ./monix inputDirectory outputDirectory) so I set Arguments according to this syntax ($ ./monix D:\monixinputs D:\monixoutput)
When I run it, there is an error:
Exception occurred executing command line.
Cannot run program "D:\eclipse workspace\monix\data\gate\plugins\ANNIE\build.xml" (in directory "D:\eclipse workspace\monix"): CreateProcess error=193, %1 is not a valid Win32 application
I'm totally confused and really need your help,Thanks in advance.
File.jar
If you want only run the program you have to use this file. For run it open cmd or bash in Windows or Linux and write:
java -jar /Path_Of_Your_File/File.jar
(Be sure that you have environment variable "JAVA_HOME" correctly configured)
Build.xml
This isn't for run the program. This file is used, for example, for generate File.jar from the Java code.
Run --> Run configuration in Eclipse
Here you have to specify the name of your project and the name of the main class in your project, but if you haven't the code, you don't have to use this.
D:\Program Files Project\Java\bin\java.exe
This is java.exe, the virtual machine of Java, you don't have to execute this for run your project.
This problem has arisen while working with the Java Chromium Embedded Framework (JCEF).
The JCEF uses a native SO library (libcef.so) and a SO library for the JNI bindings (libjcef.so). I believe the embedded Chromium looks for a file named icudtl.dat next to it, i.e. in the same directory that the libraries reside.
For the following explanation, asume that all those required files are in the same directory, named jcef_libs.
I wrote a test application using JCEF. After compiling, if I execute it with the java command, i.e.
$ export LD_LIBRARY_PATH=/path/to/jcef_libs
$ java -cp src/main/java:/path/to/maven/repo/jcef.jar:/path/to/maven/repo/jogl-all/2.2.4/*:/path/to/maven/repo/gluegen-rt/2.2.4/* tests.simple.MainFrame
it works flawlessly.
On the other hand, using the exec-maven-plugin raises a fatal error, due to not finding the named icudtl.dat file. The POM file is configured to use exactly the same artifacts as the java command does.
$ mvn exec:java -Dexec.mainClass="tests.simple.MainFrame"
[1201/123038:FATAL:content_main_runner.cc(721)] Check failed: base::i18n::InitializeICU().
I have tested the java command with the icudtl.dat file removed from the jcef_libs directory, experiencing the same error, i.e. the error raises only when the icudtl.dat is not found.
Any help will be appreciated.
UPDATE
I have been tracing what maven does under the hood. The failing mvn command above executes this internally:
java -classpath /usr/share/maven2/boot/classworlds.jar -Dclassworlds.conf=/usr/share/maven2/bin/m2.conf -Dmaven.home=/usr/share/maven2 org.codehaus.classworlds.Launcher "exec:java" "-Dexec.mainClass=tests.simple.MainFrame"
I.e. it executes my test application through a launcher. I don't know where this launcher is going to execute my application but, again, I need the icudtl.dat in that directory.
Any idea how could I workaround this?
Here's what I did:
Downloaded Apache ZooKeeper 3.4.6 (.tar file), extracted to C:\cygwin\home\user\zookeeper-3.4.6\
Ran ant at the root of the ZooKeeper folder (C:\cygwin\home\user\zookeeper-3.4.6)
Navigated to C:\cygwin\home\user\zookeeper-3.4.6\contrib\ZooInspector\
Ran ant, and I get the following error:
Output:
Buildfile: C:\cygwin\home\Jean\zookeeper-3.4.6\contrib\ZooInspector\build.xml
BUILD FAILED
C:\cygwin\home\user\zookeeper-3.4.6\contrib\ZooInspector\build.xml:19: Cannot find C:\cygwin\home\user\zookeeper-3.4.6\contrib\build-contrib.xml imported from C:\cygwin\home\user\zookeeper-3.4.6\contrib\ZooInspector\build.xml
Total time: 0 seconds
This leaves me with no .cmd or .sh file to execute. How come the build-contrib.xml file isn't there?
Also, I noticed that there seems to be an already-compiled ZooInspector JAR file: zookeeper-3.4.6-ZooInspector.jar. However, attempting to run it with the following command yields failure too:
$ java -cp zookeeper-3.4.6-ZooInspector.jar:lib/* org.apache.zookeeper.inspector.ZooInspector
Error: Could not find or load main class org.apache.zookeeper.inspector.ZooInspector
This is a bit frustrating -- setting up the ZooKeeper server was straightforward but for some reason I just can't figure out how to run this standalone GUI. What am I missing?
For windows:
#echo off
set cp="./*;./lib/*;../../*;../../lib/*"
java -cp %cp% org.apache.zookeeper.inspector.ZooInspector
ZooInspector 3.4.6 (that's bundled with ZooKeeper 3.4.6) doesn't seem to be able to connect to a running ZooKeeper instance on Windows.
Better use zkui:
https://github.com/echoma/zkui/wiki/Download
zooInspector just need 3 libraries and 1 jar to load the main class.
the mainclass lives zookeeper-3.3.0-ZooInspector.jar and it needs jtoaster-1.0.4.jar, zookeeper-3.3.0.jar and finally log4j-1.2.15.jar
After download the tar.gz file from apache servers, you must untar and build with ant. finally copy the zookeeper-3.3.0.jar and log4j-1.2.15.jar to contrib/ZooInspector/lib/. Finally cd to contrib/ZooInspector and launch this command
java -jar zookeeper-3.3.0-ZooInspector.jar -cp lib/*
I met the same issue today, and created a pre-compiled version, which should work on Windows as well. You can find details here:
https://www.admon.org/scripts/zooinspector-zookeeper-graphic-interface/
I am trying to build a exe file for my JavaFx project. The project is wrote in Java 6 and i have downloaded the standalone JavaFX for Java 6.
When i try to build the build.xml file using ant it is successful but does not create the exe I think it could be because of this message before it completes the build.
Skip [Exe Bundler (based on Inno Setup)] due to [Java Runtime does not
include lib\jfxrt.jar]
How do I go about fixing this?
EDIT:
Fixed How to change JAVA.HOME for Eclipse/ANT
A better solution might be to use the build.xml to output a jar file. Then create a text file then rename it to .bat file that executes the jar. It is pretty straight forward, and if you want to be fancy make an installer that creates shortcuts to the bat file. The contents of the bat file should be as follows (the sample will remove the console from showing up, but if you want the console use java instead of javaw):
#echo off
rem ***** Memory Initialization args *****
SET MYPROPS=%MYPROPS% -Xms512m
SET MYPROPS=%MYPROPS% -Xmx1024m
#echo on
START javaw %MYPROPS% -jar <project_jar>.jar com.example.Main
#echo off