public static String replaceString(String string,String orig,String substitution){
  int idx=string.indexOf(orig);
  while (idx != -1) {
    string=string.substring(0,idx) + substitution + string.substring(idx + orig.length());
    idx=string.indexOf(orig,idx + substitution.length());
  }
  return string;
}

public static String replaceString ( String string , String orig , String substitution ) { int idx = string . indexOf ( orig ) ; while ( idx != - 1 ) { string = string . substring ( 0 , idx ) + substitution + string . substring ( idx + orig . length ( ) ) ; idx = string . indexOf ( orig , idx + substitution . length ( ) ) ; } return string ; }
replaces character / s in a string with another .
