interface A {

  void m(); // one idea
}

interface B {

  void m(); // different idea
}

class A_Doer implements A
{
  public void m() {};
}

class B_Doer implements B
{
  public void m() {};
}

public class Test {
  A_Doer a = new A_Doer();
  B_Doer b = new B_Doer();

  public static void Test (String[] args) {
    Test test = new Test();
    test.a.m();
    test.b.m();
  };

}