Student having simple scope problem.

Question

The assignment calls for me to write into a file that is created in the main of the program.
My problem exists with writing to the file from the class' other methods, as the PrintWriter and FileWriter are not recognized.
I considered creating a global string variable to hold all that needs to be added to it, then adding it to the file in the main, but I am sure this is not what my Instructor intended.
I would post the program if someone refreshes my memory on how to do that so it's formatted.
Thank you very much for any and all help.

Answer 1

Code Update
import java.io.FileWriter;
import java.util.Random;
import java.io.PrintWriter;
class Paint{
           static String fileWrite = "";
          private String setColor;
         public Paint( )
         private void open(int dimen, int dimen2)
                fileWrite = "<svg xmlns=\"http://www.w3.org/2000/svg\"" +
                               "xmlns:xlink=\"http://www.w3.org/1999/xlink\"" +
                               "width=\"" + dimen + "%\"" +
                               "height=\"" + dimen2 + "%\"" +
                               "viewBox=\"0 0 150 150\"" +
                               "version=\"1.0\">" +
                               "<g>";
          private static String random255()
               Random generator = new Random();
               double s = generator.nextDouble() * 255;
               String s1 = Double.toString(s);
               return s1;
          private void setColor(String string)
               this.setColor = string;
          private void rect(int i, int j, int k, int l)
               fileWrite = fileWrite + "<rect x=\"" + i + "\"  y=\"" + j +
               "\"  height=\"" + k + "\" width=\"" + l + "\" fill=\"" +
               setColor + "/>";
          private void close()
               fileWrite = fileWrite +  "</g>" + "</svg>";
    public static void main(String [] args)throws Exception{
        FileWriter fileWriter = new FileWriter( args[0] );
        PrintWriter out = new PrintWriter( fileWriter );
        int dimen = Integer.parseInt( args[1] );
        Paint paint = new Paint();
        paint.open(dimen,dimen);
        dimen = dimen / 2;
        int originX = dimen, originY = dimen;
        for(; dimen > 0; dimen = dimen - 3){
           String red = random255();
           String green = random255();
           String blue = random255();
           paint.setColor( "#" + red + green + blue );
           paint.rect(originX-dimen,originY-dimen,dimen*2,dimen*2);
        paint.close();
        System.out.println(fileWrite);
        out.close();
     }{code}