Maven: How to run a .java file from command line passing arguments
Solution 1
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'"
Solution 2
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
Solution 3
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"
phedon rousou
Updated on October 20, 2020Comments
-
phedon rousou over 3 years
I have the following problem. I would like to run
mvn
from command line for aMain.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 inmy/java/program/Main.java
. What should I put inmvn exec:java -Dexec.mainClass="what to put here?" -Dexec.args="arg0 arg1 arg2"