What does "Illegal Class Literal" mean?

Question

Just started using DrJava, and I'm getting an Illegal Class Literal error when I try to run my code. My code compiles, and no issue arises until runtime. Even just the following leads to the error when I run 'java Percolation(5)' in the interaction terminal.

public class Percolation {
    public Percolation(int N)  {
        System.out.println(N);
    }    
}

I couldn't find anything on Google; any ideas what could be going on here? I feel like I'm missing something stupid. Thanks!

Answer 1

To run your program, you have to call a starting or main method. This method as to be public static void and it has to take VarArgs or an Array for your arguments:

public static void main (String[] args) {
    // in here, you can do stuff like calling other functions, or creating objects

    // no checks, just demo how to use the args:
    Perlocation p = new Perlocation(Integer.parseInt(args[0]));
}

Then you can call your program via

java Percolation 5