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We have to do java project like a management system and we have source code but the question is how to run it and where? anyone knows?
Queries
IDE
How to run it?
If you already have the source code,
Open a command prompt window then cd to the directory where you saved the java program.
For example, JavaProgram.java is in C:/
Type 'javac JavaProgram.java' and enter to compile your code.
Now type 'java JavaProgram' to run your program.
You will be able to see the result printed on the window.
Good luck :)
we have source code
You'll need to compile it.
Then you need to execute it. That could involve web containers with WAR or standalone, executable Java JARs, or directly execute a class file. Without seeing your code it's hard to answer that, but you wouldn't use an IDE to actually deploy/run your code outside of individual development.
You'll also need some server to run it on. That's not unique to Java.
Regarding the original question: "Make a project" - you could use Maven Archetypes or Spring and Quarkus have project starter websites, for example...
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I'm learning spring before I learn spring-boot I wish to install spring from Spring.
I have downloaded and unzipped, I need help as to where to place the folder so I can start working using a import org.springframework.stereotype.Component on a Mac. I know this is trivial question but I haven't found an installation of this kind, majority of the tutorials use spring.io to generate a zip file, or use maven to do the installation.
Looks like you need to use a build tool like Maven or Gradle to have the ability to add Spring Core to your project.
otherwise, you need to download the jar file and add it to the classpath.
Firstly let me tell you about CLASSPATH, according to the oracle website The Classpath tells the JDK tool where to find third-party and user defined classes that are not extensions or part of the Java platform.
On a Mac you need to type echo $CLASSPATH to see if you have any CLASSPATH set up, if you have never worked with third party classes this will be blank.
To add to CLASSPATH run the following command in the terminal
export CLASSPATH=/Users/{Path} this will clear all the classpaths , if you want to add to existing classpath run export CLASSPATH={$CLASSPATH}:/Users/{Path}
You can find a detailed article on this topic here
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Context:
My company has a tool written in Java, that is run on the command line interface. To run this tool on the command line:
gradle clean
gradle build
cd multiple times
unpack rar files
./run_tool.sh parameter1 parameter2 parameter3
My company also has an automation test codebase that consists of JUnit tests. I have to write an automated test that runs the tool.
I know it is possible to run a script inside a Java program. However, the examples I saw did not show how to run a script with parameters. Furthermore, the examples I saw were simple scripts, not full Java programs.
I do not know if what I am trying to do is even possible. Can anyone please suggest potential approaches?
If the tool is written in Java, it may make more sense to use its classes directly in JUnit tests. You'd have to publish the tool as JAR files in your corporate Maven repository (Nexus, Artifactory, etc), and hook it up in your tests as Maven/Gradle dependency.
Executing a shell command from Java is certainly possible, but it's much more complicated.
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When do we need to attach source to a jar?
Can we debug without attaching the source code?
Can we see the stacktrace line numbers without the source (AFIAK we can't)?
What is the best practice for local builds? Do we need the source code?
What about CI?
Can we leave the source code only for production release?
Thanks,
Omer
It's good practice to also publish the sources jar along with your binary jar in your internal (or external) Maven repository. It makes life of the developer that is working with your code much easier since they can see your comments / browse the codebase and be able to have all that at debug time. Now as you are saying even if the sources jar is not published, developers have ways around it primarily relying on their IDE. In Eclipse for instance you can install the Java Decompile plugin that would give you access to the code during debug time or on IntelliJ there is something similar without the need of installing a plugin.
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I would like to add some sort of unit testing to an IDE known as "IBS Integrator".
how the IDE works:
I write "java-ish" code in .itr files.
when I press the run button these files are compiled into .class and .java files.
I have no idea what happens next.
Does anyone have advise on how I could make unit testing work in a setup like this?
I was hopping for a framework like phpunit or rspec. I know they are for different langagues but a similar tool for java would be nice. I'm not sure what (if anything) can interact with .class/.java files.
I would prefer something open-source if possible.
Since IBS Integrator compiles to .class files, you should be able to write JUnit tests in Java against those classes, and run them however you'd normally run JUnit tests (kick off Ant or Maven, open Eclipse and run them from there, etc.). And I can't think of any reason to use another technology (phpunit, rspec, etc.) for writing tests of Java code; JUnit seems like the clear winner here.
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I use eclipse to run my java code, but I want to make an application that won't use eclipse to run. I want to make it work as a portable stand alone application that only uses the libraries I need.
Right click on Projectfolder (in Eclipse) -> Export -> Java -> runnable JAR -> choose class with main method. Done ;)
I'm going to assume you mean to create a .exe file. for this you'll need a .jar file.
I'm not familiar with Eclipse I know that Netbeans makes the .jar file automatically once the code is compiled.
(For Netbeans)
This .jar file can be found in the dist folder. In case there is none see here to fix that.
In case Eclipse puts into a different folder I'd just look in all the folders related to the project until you find a file with a .jar extension.
Once you have the .jar file you'll need to run an application to change it from .jar to .exe , I would recommend Launch4j.
Here's a handy tutorial to help you with that application if you get stuck.
I know this isn't exactly the answer you're looking for but it's close! Hope this helps!