Batch file to java test

Question

I have a very simple question and I've even searched here but it's for a much simpler case than what I found examples of. I have a java program which has a simple System.in on the main function....I simply want to make a bat file which will run the java program and then enter the input stream automatically.

What I basicly want is this made by a batch file so I can make a test bench:

java Proj
module array1{}

And I wanted to run more modules as they are my tests.

Thanks in advance

Answer 1

I don't know if it is possible to do that with System.in, but have you considered in the alternative to just pass those as command line arguments to your main method?

Answer 2

Okay, I'm not sure what precisely you're asking. Is there any reason you can't simply pass-in the parameters you need via the command line?

For instance, let's say you have a class MyJavaClass with a main method. You call it like this:

java MyJavaClass module1 module2 ... modulen

... and then assuming your main method looks like this:

public static void main (String[] args) {

... your args array will look like {"module1", "module2", ... "modulen"}, which you can then process and use for opening input streams as you see fit.

Or am I missing the point completely?

And if you're looking to create test code, have you taken a look at JUnit yet? No sense re-inventing the wheel unless you absolutely have to.

Answer 3

If I understand correctly, what you want is to run java Projand then write module array1{} or some other inputs to standard input.

If this is correct, you can put your input in a text file, say input.in and the just type in your bat file the following:

java Proj < input.in

I don't have a windows environment here to check it but I'm pretty sure that it'll work.

Answer 4

Look into junit. It was designed for running test suites.