java - Is there a way to redirect input from file to stdin in Netbeans?

Question

I'm developing application with Netbeans and Maven. My application should obtain data from stdin. But I could not understand how to test it. Putting < data.txt into args list does not work.

I need the same as:

$ java MyProgram < data.txt 

Answer 1

I assume you have a thing like:

public static void main(String[] args) {
...
}

This can used as an entry point to your application and before that you change the input channel via:

FileInputStream is = new FileInputStream(new File("test.data"));
System.setIn(is);

The above can be used within a unit/integration test.