Make it just A, Help me please

Hellow,
i'm kind a confuse, please help me

i make 2 object (car and Home)
when object car hit object Home set value for "Path" = A
my code that i write just like this

public boolean foundHome()
{
Actor Hm = getOneObjectAtOffset (0,0, car.class);
if (Hm != null)
{ return true; }
else
{ return false; }
}

public void Act()
{
if (foundHome())
{ Path =Path +"A" }
}

but what i got is "Path = AAAAAAAAAAA"

because image for Home is quite Big compare to image for Car
so the foundHome() condition is "True" repeatedly and make my "Path" became "AAAAAAAA"

what i must do, so i can get Just "A" in my "List"

and can somebody teach me about
thanks a lot

Code:

---

Path =Path +"A"

---

to

Code:

---

Path = "A"

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No, i want to add another String into that "Path", not just A . like if the car hit another home (witch i called B), so the Path become AB.

In that case, determine what the last character in the string was, and if the char that will be added is NOT the same, add the new char, otherwise, do nothing. Something like this...

Code:

---

String path;
char nextChar = getLocationChar()//this method determines
                                //what the next character should be
if(path.length() = 0)
    path += nextChar;
else if(nextChar != path.charAt(path.length() - 1)
    path += nextChar;

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