Having a class itself as its constructor's only parameter

Question

public class Foo{
    private String a;
    private int b;

    public Foo(Foo foo){
        this.a = foo.a;
        this.b = foo.b;
    }
}

Hi eve

Answer 1

This is nonse code. You need instance of class to create instance... How you want to create the first instance of this object at all?