package org.kodejava.examples.intro;
public class ArgumentParsingExample
{
public static void main(String[] args)
{
// When creating a Java application we will sometime need to pass a
// couple parameters when the program is executed. To get the passed
// parameter from the command line we can read the argument passed to
// the main method just as the signature above. As you know to make a
// class executable you need to create a method as follow:
//
// public static void main(String[] args) {}
//
// As you can see, this method take an array of String as the parameter.
// You can guess that this array is the parameter that we passed in
// the command line.
for (int i = 0; i < args.length; i++)
{
System.out.println("Argument " + (i + 1) + " = " + args[i]);
}
// If you want to check if the number of supplied parameters meet the
// program requirement you can check the size of the arguments array.
if (args.length < 3)
{
System.out.println("You must call the program as follow:");
System.out.println("java ArgumentParsingExample arg1 arg2 arg3");
// Exit from the program with an error status, for instance we
// return -1 to indicate that this program exit abnormally
System.exit(-1);
}
System.out.println("Hello, Welcome to ArgumentParsingExample Program");
}
}
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