Command Line Arguments

Posted By on October 2, 2014


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Difference between constructor and method
String Buffer class in java

Sometimes  you will want to pass information into a program when you run it.  This is accomplished by passing command-line arguments to main( ).

A command-line  argument is  the information that directly follows the program’s name on the  command line when it is executed.  To access the command-line arguments inside a Java program is quite easy— they are stored as strings in a String array passed to the args parameter of main( ).

The first command-line argument is stored at args[0], the second at args[1], and so on.

For example,  the following program displays all of the command-line arguments that it is called with:

 

// Display all command-line arguments.

class CommandLine {
public static void main(String args[]) {
for(int i=0; i<args.length; i++)
{
System.out.println(“args[” + i + “]: ” + args[i]);
}
}
}
//Try executing this program, as shown here:
java CommandLine this is a test 100 -1

 

Output::
args[0]: this
args[1]: is
args[2]: a
args[3]: test
args[4]: 100
args[5]: -1

Difference between constructor and method
String Buffer class in java

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Posted by Akash Kurup

Founder and C.E.O, World4Engineers Educationist and Entrepreneur by passion. Orator and blogger by hobby

Website: http://world4engineers.com