Variable might not have been initialized, but I can't get around it...

Question

I'm getting a variable might not have been initialized error, and I know why, but I can't get around it. Basically, this snippet of my code is reading in a map file for a game. The first two lines of the map file are configuration information, and the rest is coordinates for the tiling graphics.
while ((str = in.readLine()) != null) {
                if(!read_info){
                    //process first line: tileset image, size, playerpos
                    temp = str.split(",");
                    loadTileset(temp[0],32);
                    size_x = Integer.parseInt(temp[1]);
                    size_y = Integer.parseInt(temp[2]);
                    map = new Tile[size_x][size_y];
                    player.resetLoc(Integer.parseInt(temp[3]),Integer.parseInt(temp[4]));
                    //process second line: impassible
                    str = in.readLine();
                    temp = str.split("!");
                    impassable = new Point[temp.length];
                    for(int m=0;m<temp.length;m++){
                        tmp_coords = temp[m].split(",");
                        impassable[m] = new Point(Integer.parseInt(tmp_coords[0]),Integer.parseInt(tmp_coords[1]));
                    read_info = true;
                } else{
                    temp = str.split("!");
                    for(int i=0;i<size_x;i++){
                        tmp_coords = temp.split(",");
boolean ti = true;
for(int p=0;p<impassable.length;p++){
map[i][j] = new Tile(Integer.parseInt(tmp_coords[0]),Integer.parseInt(tmp_coords[1]),true);
j++;
I'm not including everything.. this should make sense. Impassable is a Point[].
I can't say how big the Impassable list will be until it reads the second line of the map file. However, that happens in the first run-through of the file-reading processes.
Is there a try/catch statement I can use to get past this?

Answer 1

If you set that variable to null you will fix this
error.
Object obj;to
Object obj = null;Beware this may cuase NullPointerExceptions, so you
should check this variable for being null before you
try to access it.That's usually the wrong way to approach this. Getting this compiler error is often a sign of a logic error. Only initialize the variable if it makes sense for the variable to have that value. Don't do it just to satisfy the compiler.