public String makeIndent(int indent){
  StringBuilder sb=new StringBuilder();
  for (int i=0; i < indent; i++) {
    sb.append("  ");
  }
  return sb.toString();
}

public String makeIndent ( int indent ) { StringBuilder sb = new StringBuilder ( ) ; for ( int i = 0 ; i < indent ; i ++ ) { sb . append ( "  " ) ; } return sb . toString ( ) ; }
constructs an indentation string .
