public JSONTokener(Reader reader){
  this.reader=reader.markSupported() ? reader : new BufferedReader(reader);
  this.eof=false;
  this.usePrevious=false;
  this.previous=0;
  this.index=0;
  this.character=1;
  this.line=1;
}

public JSONTokener ( Reader reader ) { this . reader = reader . markSupported ( ) ? reader : new BufferedReader ( reader ) ; this . eof = false ; this . usePrevious = false ; this . previous = 0 ; this . index = 0 ; this . character = 1 ; this . line = 1 ; }
construct a jsontokener from a reader .
