code: public boolean setKerning(int char1, int char2, int kern) {
          String first = GlyphList.unicodeToName(char1);
          if (first == null)
              return false;
          String second = GlyphList.unicodeToName(char2);
          if (second == null)
              return false;
          Object obj[] = (Object[])KernPairs.get(first);
          if (obj == null) {
              obj = new Object[]{second, Integer.valueOf(kern)};
              KernPairs.put(first, obj);
              return true;
          }
          for (int k = 0; k < obj.length; k += 2) {
              if (second.equals(obj[k])) {
                  obj[k + 1] = Integer.valueOf(kern);
                  return true;
              }
          }
          int size = obj.length;
          Object obj2[] = new Object[size + 2];
          System.arraycopy(obj, 0, obj2, 0, size);
          obj2[size] = second;
          obj2[size + 1] = Integer.valueOf(kern);
          KernPairs.put(first, obj2);
          return true;
      }
docs: Sets the kerning between two Unicode chars.
  @param char1 the first char
  @param char2 the second char
  @param kern the kerning to apply in normalized 1000 units
  @return <code>true</code> if the kerning was applied, <code>false</code> otherwise