UPC encoding in processing to make bar codes.

UPC

class Upc {

int upcCode[];
String a, b, c, d, e, f, g, h, i, j, aa, bb, cc, dd, ee, ff, gg, hh, ii, jj;
String output []= { "1 0 1"}; 
int outBits[]=new int[95];

Upc(int code[]){
  this.upcCode=code;
}

void checkCode() {
  //leftside
  for (int z=0; z<upcCode.length/2;z++) {
    if (upcCode[z]==0) {
      a="0 0 0 1 1 0 1";
      output=append(output, a);
    } 
    else if (upcCode[z]==1) {
      b="0 0 1 1 0 0 1";
      output=append(output, b);
    } 
    else if (upcCode[z]==2) {
      c="0 0 1 0 0 1 1";
      output=append(output, c);
    } 
    else if (upcCode[z]==3) {
      d="0 1 1 1 1 0 1";
      output=append(output, d);
    } 
    else if (upcCode[z]==4) {
      e="0 1 0 0 0 1 1";
      output=append(output, e);
    } 
    else if (upcCode[z]==5) {
      f="0 1 1 0 0 0 1";
      output=append(output, f);
    } 
    else if (upcCode[z]==6) {
      g="0 1 0 1 1 1 1";
      output=append(output, g);
    } 
    else if (upcCode[z]==7) {
      h="0 1 1 1 0 1 1";
      output=append(output, h);
    } 
    else if (upcCode[z]==8) {
      i="0 1 1 0 1 1 1";
      output=append(output, i);
    } 
    else if (upcCode[z]==9) {
      j="0 0 0 1 0 1 1";
      output=append(output, j);
    }
  }

  output=append(output, "0 1 0 1 0");

  //rightside
  for (int z=6; z<upcCode.length;z++) {
    if (upcCode[z]==0) { 
      aa = "1 1 1 0 0 1 0";
      output=append(output, aa);
    } 
    else if (upcCode[z]==1) {
      bb = "1 1 0 0 1 1 0";
      output=append(output, bb);
    } 
    else if (upcCode[z]==2) {
      cc = "1 1 0 1 1 0 0";
      output=append(output, cc);
    } 
    else if (upcCode[z]==3) {
      dd = "1 0 0 0 0 1 0";
      output=append(output, dd);
    } 
    else if (upcCode[z]==4) {
      ee = "1 0 1 1 1 0 0";
      output=append(output, ee);
    } 
    else if (upcCode[z]==5) {
      ff = "1 0 0 1 1 1 0";
      output=append(output, ff);
    } 
    else if (upcCode[z]==6) {
      gg = "1 0 1 0 0 0 0";
      output=append(output, gg);
    } 
    else if (upcCode[z]==7) {
      hh = "1 0 0 0 1 0 0";
      output=append(output, hh);
    } 
    else if (upcCode[z]==8) {
      ii = "1 0 0 1 0 0 0";
      output=append(output, ii);
    } 
    else if (upcCode[z]==9) {
      jj = "1 1 1 0 1 0 0";
      output=append(output, jj);
    }
  }

  output=append(output, "1 0 1");
  String bits = join(output, " ");
  String split[]=split(bits, " ");
  for (int i=0;i<split.length;i++) {
    outBits[i]=int(split[i]);
  }
}
}