Java Command Line Argument: The java command-line argument is an argument i.e. passed at the time of running the java program. The arguments passed from the console can be received in the java program and it can be used as an input. So, it provides a convenient way to check the behaviour of the program for the different values. You can pass N (1,2,3 and so on) numbers of arguments from the command prompt.
Command Line Arguments can be used to specify configuration information while launching your application.
There is no restriction on the number of java command line
arguments.
You can specify any number of arguments
Information is passed as Strings.
They are captured into the String args of your main method
Simple example of command-line argument in java
In this example, we are receiving only one argument and printing it.
To run this java program, you must pass at least one argument from the command prompt.
class CommandLineExample
{
public static void main(String args[]){
System.out.println("Your first argument is: "+args[0]);
}
}
compile by > javac CommandLineExample.java
run by > java CommandLineExample sonoo