i am making a java swing Gui which i will convert to a jar file. also i have 3 other jar files which i am calling through my gui. But when i convert my gui and other three jar files into one, an error is shown the the 3 jar files are not found/file not found exception.
i am usin classLoader to get path of my 3 jars inside my final jar
my code:
Runnable runner = new Runnable() {
public void run() {
JFrame frame = new JFrame("Testing");
ClassLoader cl=this.getClass().getClassLoader();
String k=cl.getResource("jar_1.jar");
Runtime.getRuntime.exec("java -jar "+k );
similary other 3 jar files..
so what i think is that when i convert my gui and all the other three jars into one jar then the path of the 3 jars is not correct.
Thats not how you call jars.
If they are loaded correctly you have complete control of them within your main class / jar file. and you can just import them as you would with any other import.
When they are imported you can call the methods you like (if you just want to run it - just call main() )
You should be using the class path
Class-Path: jar1-name jar2-name directory-name/jar3-name
Related
Created a jar file for a spring boot multimodule application and ran the jar file using java -jar command. While starting the application, it gives ResourceFinderException. When I analyzed it, the issue is happening because in my ResourceConfig file, i have used the package for my api end points. If I use register(service.class), the application starts fine. Any suggestion how can I provide the package instead of using register? The reason I want to use package is because I have lots of services inside multiple packages and the code looks very ugly if i use register for all the services. The ResourceConfig file looks like below.
public class AppResourceConfig extends ResourceConfig {
public AppResourceConfig {}{
super();
property("jersery.config.beanValidation.enableOutputValidationErrorEntity.server");
**packages("com.api");**
register(GsonProvider.class);
register(RequestContextFilter.class);
register(NotFoundExceptionMapper.class);
register(DefaultExceptionMapper.class);
}
}
Here the issue is with highlighted line: packages("com.api")
If I comment out this code application will be up. Otherwise it is giving org.glassfish.jersey.server.internal.scanning.ResourceFinderException: java.io.FileNotFoundException: api-01.03.00.04-snapshot.jar (No such file or direcotry)
Note: api-01.03.00.04-snapshot.jar is the jar file for one of the module in a project
I am currently working on an Flink application that uses some of the Hadoop dependencies to write the data to S3 location. On local environment it is working fine, however when I deploy this Flink application on EMR cluster it throws an exception related to compatibility issue.
The error message that I am getting is
java.lang.RuntimeException: Could not load the TypeInformation for the class 'org.apache.hadoop.io.Writable'. You may be missing the 'flink-hadoop-compatibility' dependency.
at org.apache.flink.api.java.typeutils.TypeExtractor.createHadoopWritableTypeInfo(TypeExtractor.java:2025)
at org.apache.flink.api.java.typeutils.TypeExtractor.privateGetForClass(TypeExtractor.java:1649)
at org.apache.flink.api.java.typeutils.TypeExtractor.privateGetForClass(TypeExtractor.java:1591)
at org.apache.flink.api.java.typeutils.TypeExtractor.createTypeInfoWithTypeHierarchy(TypeExtractor.java:778) ....
I have included the maven dependency of flink-hadoop-compatibility-2.10 jar in POM dependency. But it is not detecting it. The Flink version I am using is 1.2.0
However, when I explicitly copy the compatibility JAR to the ${FLINK-HOME}/lib location, I am not getting any exception and able to run the Flink application successfully.
Is there any way that we can use, so that without deploying the JAR file to ${FLINK-HOME}/lib we can run the application?
OR
What modifications required in POM dependencies, so that the application will detect it and it is not required to copy the compatibility JAR to flink-home/lib location?
package org.apache.flink.api.java.typeutils;
public class TypeExtractor {
/** The name of the class representing Hadoop's writable */
private static final String HADOOP_WRITABLE_CLASS = "org.apache.hadoop.io.Writable";
private static final String HADOOP_WRITABLE_TYPEINFO_CLASS = "org.apache.flink.api.java.typeutils.WritableTypeInfo";
// visible for testing
public static <T> TypeInformation<T> createHadoopWritableTypeInfo(Class<T> clazz) {
checkNotNull(clazz);
Class<?> typeInfoClass;
try {
typeInfoClass = Class.forName(HADOOP_WRITABLE_TYPEINFO_CLASS, false, TypeExtractor.class.getClassLoader());
}
catch (ClassNotFoundException e) {
throw new RuntimeException("Could not load the TypeInformation for the class '"
+ HADOOP_WRITABLE_CLASS + "'. You may be missing the 'flink-hadoop-compatibility' dependency.");
}
...
}
}
This is because org.apache.hadoop.io.Writable is mean to be loaded by TypeExtractor.class.getClassLoader() which is AppClassLoader, and the submited flink jar is loaded by ParentFirstClassLoader, which is the child of AppClassLoader, so AppClassLoader can not load org.apache.hadoop.io.Writable from your flink jar.
I'm not sure if it's a bug, change to classLoader to Thread.currentThread().getContextClassLoader() will make it work without copy the flink-hadoop-compatibility jar file to ${FLINK-HOME}/lib location.
After looking into various posts and experimenting with POM files, I think with current version of Apache Flink (1.2.0) it is required to copy (deploy) the JAR file to ${FLINK-HOME}/lib location.
I have created a Java project with 1 class containing 2 simple tests, exported as jar and added the jar in my JMeter JUnit folder, now after restarting the JMeter i don't see my class in JMeter even after selecting Annotation 4 option.
This is my class:
package print;
import org.junit.Test;
public class PrintClass {
#Test public void test() {
System.out.println("Hello World..!");
}
}
Consider the following checklist:
Your JUnit test class should have either empty constructor or constructor taking a single string as an argument. Other options are not supported
You should place your .jar file(s) under "lib/junit" folder of your JMeter installation
If there are any dependencies you need to put them somewhere in JMeter classpath as well
JMeter restart will be required to pick the .jars up
In case of any problems first of all check jmeter.log file (normally it lives under "bin" folder of your JMeter installation and contains enough troubleshooting information)
See How to Use JUnit With JMeter article for more details.
Even I faced same kind of issue then I added the dependency jars to the lib file.
Make sure you copy these files at this location -> apache-jmeter-5.1.1\lib
1.Selenium webdriver jar file (selenium-server-standalone)
2. Junit4 Jar file (junit4)
Make sure you add Jar file from eclipse or any IDE to this location -> apache-jmeter-5.1.1\lib\junit
1. Jar file which contains the automation selenium code (Using Junit)
Restart Jmeter and continue which the normal process of adding thread group and adding Junit sampler etc...
This resolved my issue and I was able to run my scripts on Jmeter.
In eclipse make sure that you create a JUnit class, not just the class and add junit annotations to this, even i was facing the same issue, it got resolved when i was created a JUnit class and then uploaded my project in JMeter
Did you put the jar in :
/lib/junit
Check you jar by running below command to see if it is ok:
jar -tvf <your jar>
And its dependencies as described in:
JUnit test classes not showing up in JMeter
See this for more details:
http://jmeter.apache.org/usermanual/junitsampler_tutorial.html
I am very new to JMeter
I am trying to use Junit Request sampler in JMeter.In my project we have a class called PayloadProcessorTest.java. from these class methods i am calling some other class methods.It has lot of dependencies
How can i create jar file for PayloadProcessorTest.java with dependencies
I saw many examples for JMeter with Junit Request sampler. But, those all examples are independent classes
Can any one please help me
There are several ways of creating a .jar file:
Using Maven
Using Ant
Using Eclipse
.jar files are basically ZIP archives so you can just compile your PayloadProcessorTest.java and put resulting PayloadProcessorTest.class into /lib/junit/test.jar file keeping package structure. After restart JMeter will pick up the class. Don't forget to add any 3rd-party jars used in PayloadProcessorTest (if any) to JMeter classpath. For more information check out How to Use JUnit With JMeter guide.
If you want to get the dependencies with Maven you can run
mvn install dependency:copy-dependencies, which will create a folder inside your target folder called 'dependency' filled with the dependencies. To speed this up you can add the command as External Tool in Eclipse using Run > External Tools > External Tools Configurations.
Or if you want to use Eclipse you can choose File > Export > Java > Runnable JAR file and select the option 'Copy required libraries into a sub folder next to the generated JAR'. However to do this you will need to add a main class, and run it once as a Java Application before trying to export. The Main class can be empty or not.
package test;
public class Main {
public static void main(String[] args) {
}
}
Really, it depends what packaging capabilities you have.
You need to compile your classes in one or more jars, and then put them in the %JMETER_HOME%/lib/ext folder.
Or use maven to do it all for you.
I'm developing tests using junit, maven and Selenium inside Netbeans IDE. I don't have any main class inside the src folder. I can run the tests easily from the IDE, but I'm trying to pack all of them into one jar file (so I can later use with linux cron and schedule daily tests). I've searched around the web but so far my search hasn't been successful. Can anyone point me in some enlightment path please?
Add a class in your project that contains the main function and accepts test class names as parameter.
class RunTest
{
public static void main(String args[])
{
// Run the tests contained in the classes named in the args.
org.junit.runner.JUnitCore.main(args);
}
}
Now create the jar using maven including all the dependancies in pom.xml. you will be able to run tests through jar by passing test class names
for more information read this