Passing int arrays to strings

Question

I'm having trouble passing an array of integers to a string and vice versa i.e. the array has
element[0] =1
element[1] =0
element[2] =0 but it can hold up to 16 elements
what I want is for this array which holds a binary number represented by ints to be represented as the string "001". Im passing the method an array then I want it to loop the length of the array and store each element as a part of the string. I then want to add the number to another number put it back in an array and return it. If anyone has any help I would appreciate it.
Thanks.

Answer 1

public class YourClass {
     public static String arrayToString(int[] theArray) {
          int lim = theArray.length;
          StringBuffer sb = new StringBuffer();
          for (int i = 0; i < lim; i++) {
               sb.append(String.valueOf(theArray));
          return sb.toString();
     public static int[] stringToArray(String theString) {
          int lim = theString.length();
          int[] theArray = new int[lim];
          for (int i = 0; i < lim; i++) {
               theArray[i] = Integer.parseInt(theString.substring(i, i+1));
          return theArray;
     public static void main(String[] args) {
          int[] theArray = {1,0,0,1,1};
          String theString = arrayToString(theArray);
          System.out.println(theString);
          int[] theArray2 = stringToArray(theString);
          System.out.println(arrayToString(theArray2));