HI,
first post so go easy on me .
i have only been using processing for about a week now and have come unstuck.
i`m having an issue with this code i wrote, it works but i get NULL values in my results.csv file.
i will post all of the code but there is a stock report and location check .csv files missing.
i believe the the line in red is my failing but do not know how to fix it.

import javax.swing.*;

int records;
int records1;
int count;
int x;
int y = 80;
int i=0;
int j=0;
int position=0;
int a;
int pos;
int findme =0;
int ff = 20;
int xx = 100;
String[] stocklist;
String[] location;
String[] txt = split("Barcode,Item,Location,Size,Description,Qty,Pick,Putaway,Available,Default,Fixed,XDoc",',');
String search;
String[] savtxt;
int index = 0;

 void setup() {
  size(1000, 800);
  background(0);
   smooth();
   PFont font;

font = loadFont("Mine.vlw");
textFont(font);
textSize(18);
 // create a file chooser
final JFileChooser fc1 = new JFileChooser();

// in response to a button click:
int returnVal1 = fc1.showOpenDialog(this);

   if (returnVal1 == JFileChooser.APPROVE_OPTION) {
  File file1 = fc1.getSelectedFile();
      stocklist = loadStrings(file1); // load text file into stocklist[] array
      }
 else {
  println("Open command cancelled by user.");
}
 
 // create a file chooser
final JFileChooser fc2 = new JFileChooser();

// in response to a button click:
int returnVal2 = fc2.showOpenDialog(this);

   if (returnVal2 == JFileChooser.APPROVE_OPTION) {
  File file2 = fc2.getSelectedFile();
      location = loadStrings(file2); // load text file into [] array
      }
     
 else {
  println("Open command cancelled by user.");
      }
  
  records = (stocklist.length);  //  length of text file
  records1 = (location.length);  //  length of text file

}


void draw() {



 
  stroke(0);
  fill(0);
  rect(0, 0, width, 100); // clear top area for text display
  fill(255);

 search = location[findme];
String[] pieces = split(stocklist[j], ',');    // split stocklist[] array into pieces[] array using tab delimit `,`
String[] savtxt = new String[records1]; 
  
  x=20;

  for (int i = 0; i < 9; i = i+1) {
  
      text(pieces[i], x, y);  //print pieces[] array
      String str = pieces[i];
      int index = str.indexOf(search);
  pos=60;
     
      if (i==0) {
        pos=100;}
      if (i==1) {
        pos=100;}
      if (i==2) {
        pos=120;}
      if (i==3) {
        pos=100;}
      if (i==4) {
        pos=320;}
     
  x=x+pos;
     
 fill(0);// clear for update text display
  rect(0, 0, width, 50); // clear for update text display
 fill(255); // clear for update text display
     
      text("Index  "+(j+1), 20, 20);text("of Records  "+records, 120, 20);
       text("Looking For  "+search, 450, 20);text("in Array  "+findme, 700, 20);
      
   
     
    if (index == -1){}
 
        else{
         
             text(" Found in  "+txt[i]+"    of    "+"Record  "+(j)+"            "+stocklist[j], 20, xx+ff);ff = ff + 20;        
             savtxt[position] = stocklist[j];
             //arrayCopy(stocklist, j, savtxt, position, 1);
             j=0;
             position=position+1;
             findme = findme +1;
            }
     
        }

   //delay(20);
  text(""+savtxt[position], 450, 40);
  j=j+1;
 
  if (j==records) {
       j=0;
       text("ERROR NOT FOUND", width/2, height/2);
       findme = findme +1;}
  
  
  
   if (findme == records1-1) {
        fill(255,0,0);
        textSize(30);
        text("Finished With Success", width/2, height/2);
        saveStrings("RESULTS.csv", savtxt);
        
       }
  
}