the question is ;

The file “points.txt” stores the coordinates of two points in two lines, such as

(50, 50) (200, 200)

Write a program to read data from “points.txt” (50%) and draw a colourful square (50%) taking the two points as the corners in the window. Here we assume a 400*400 window and the two pints are within the window.

Hint: In addition to file input, you may need to make use of Processing's standard string manipulation functions/methods split(), substring(), trim() and int().

NEED HELP PLZ 

HERE IS MY CODE 

BufferedReader shihan;

String s1 , s2;

String s;

String [] coord_pair = new String [2];

int [] x_y = new int [4];

color c;

void setup()

{

  size(400,400);

  background(255);

  c = color (random(0,256),random(0,256),random(0,256));

  shihan = createReader("points.text");

  s = null;

  try

  {

    // code that creats he erro

    s = shihan.readLine();

  }

  catch(IOException ioe)

  {

    // code that fixes the error

    print(ioe);

  }

  for (int i = o; i< coord_pair.length; i ++)

  {

    String [] p1 = new String [2];

    p1 = split (coord_pair[i],' , ' ); // 50,50

    print (p1); 

    

    s1= trim(p1 [0]);

    s2= trim(p1 [1]);

    x_y [i*2] = int (s1.substring(1));

    x_y [i*2+1] = int (s2.substring(0,s2.length()-1));

  }

  print(x_y);

  

  }

  

}

void draw()

{

  fill(c);

  rectMode(CORNER);

  rect(x_y[0], x_y[],x_y[2] ,x_y[3]);

}