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Tuesday 26 August 2014

Command line arguments in java

While running a program at the command prompt we can pass some arguments to it. These arguments are command line arguments. They are stored in String args[ ] which we use in public static void main(String args[ ]).

e.g.   c:> java Demo C++ C# C
Interpreter will take it as
c:>java Demo.main(new String[ ]={"C++", "C#", "C"})

//Program to read names from command prompt
class Demo
{
    public static void main(String args[ ])
    {
        for(int i=0; i<args.length; i++)
            System.out.println("Hello"+args[i]);
    }
}

To execute this open command prompt.
c:> javac Demo.java
c:> java Demo Dipesh Shubham Chetna
Hello Dipesh
Hello Shubham
Hello Chetna

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