What does “this()” method mean?

Question

I ran into this block of code, and there is this one line I don\'t quit understand the meaning or what it is doing.

public Digraph(In in) {
    this(in.readI         


        

Answer 1

It's nearly the same

public class Test {
    public Test(int i) { /*construct*/ }

    public Test(int i, String s){ this(i);  /*construct*/ }

}