get user input through file to java program in eclipseIDE

Question

In command prompt i usually give input to java program as follows

c:/> java Myprogram < in.txt

this in.txt have input for the Myprogram class

but i cannot do the same in eclipse

i have give the parameter in program arguments in run configuration as

< in.txt

no error is coming. simply the program ask for the input

what should i do.

Answer 1

The < symbol is something understood and interpreted by the command line. You can't use that in Eclipse.

You Have a look at the answer to this question:

• Eclipse reading stdin (System.in) from a file

Answer 2

in your main Method, you can get the parameters via the String array the main method has.

public static void main(String [] args){
    for(int i = 0; i <args.length; i++)
        System.out.println(args[i]);
}