感于日本地震

// now

if(Something.happened()){

　　　　System.out.println(me.worryabout.contains(you.name) );

　　　　// the result must be true

　　　　// however

　　　　System.out.println(you.worryabout.contains(me.name));

　　　　// it should be false

}

// after times fly, I wish

you.worryabout.put(me.name, me);