IO写 PrintWriter

　　　　private static final String FILENAME = "c:\\temp\\out.txt";

　　　　 PrintWriter pw = null;
        try {
            pw = new PrintWriter(FILENAME);

            pw.println("hello this is ross speaking");

        } catch (FileNotFoundException e) {
            // TODO Auto-generated catch block
            e.printStackTrace();
        } finally {
            pw.close();
        }

PrintWriter 源码：

/*      */   public PrintWriter(String paramString)
/*      */     throws FileNotFoundException
/*      */   {
/*  157 */     this(new BufferedWriter(new OutputStreamWriter(new FileOutputStream(paramString))), false);
/*      */   }