public java.lang.StringBuilder insert(int offset,char c){
  move(1,offset);
  value[offset]=c;
  count++;
  return this;
}

public java . lang . StringBuilder insert ( int offset , char c ) { move ( 1 , offset ) ; value [ offset ] = c ; count ++ ; return this ; }
inserts the string representation of the char argument into this string buffer . the second argument is inserted into the contents of this string buffer at the position indicated by offset . the length of this string buffer increases by one . the overall effect is exactly as if the argument were converted to a string by the method string . valueof ( char ) and the character in that string were then inserted into this stringbuffer object at the position indicated by offset . the offset argument must be greater than or equal to 0 , and less than or equal to the length of this string buffer .
