I have the following problem. I would like to run mvn from command line for a Main.java file. Main.java accepts a parameter. How do I do that from command line?
I tried finding an example but I was not successful. Could someone help me by giving me an example of that?
I looked here but didn't quite understand what I should do.
Also, how do I execute that command from a different folder than the Main.java folder?
for example the Main.java is located in my/java/program/Main.java.
What should I put in
mvn exec:java -Dexec.mainClass="what to put here?" -Dexec.args="arg0 arg1 arg2"
You could run: mvn exec:exec -Dexec.args="arg1".
This will pass the argument arg1 to your program.
You should specify the main class fully qualified, for example, a Main.java that is in a package test would need
mvn exec:java -Dexec.mainClass=test.Main
By using the -f parameter, as decribed here, you can also run it from other directories.
mvn exec:java -Dexec.mainClass=test.Main -f folder/pom.xm
For multiple arguments, simply separate them with a space as you would at the command line.
mvn exec:java -Dexec.mainClass=test.Main -Dexec.args="arg1 arg2 arg3"
For arguments separated with a space, you can group using 'argument separated with space' inside the quotation marks.
mvn exec:java -Dexec.mainClass=test.Main -Dexec.args="'argument separated with space' 'another one'"
In addition to running it with mvn exec:java, you can also run it with mvn exec:exec
mvn exec:exec -Dexec.executable="java" -Dexec.args="-classpath %classpath your.package.MainClass"
Adding a shell script e.g. run.sh makes it much more easier:
#!/usr/bin/env bash
export JAVA_PROGRAM_ARGS=`echo "$@"`
mvn exec:java -Dexec.mainClass="test.Main" -Dexec.args="$JAVA_PROGRAM_ARGS"
Then you are able to execute:
./run.sh arg1 arg2 arg3
Source: Stackoverflow.com