Show me the truth -- 告诉我真相

public class NullPoint {

  public static int m;
  int k;
  public static void main(String[] args) {
    NullPoint jk = null;

    jk.Test();
    jk.Test2(156);
    jk.Test3();

  }
  public void Test(){
    System.out.println("m is here :"+m);
  }
  public void Test2(int i){
    System.out.println("i is here :"+m);
  }
  public void Test3(){
    System.out.println("k is here :"+k);
  }

}
如果上面的代码用C++实现会怎样呢？