BufferedReader的使用

1、注意BufferReader类的描述

Reads text from a character-input stream, buffering characters so as to

 * provide for the efficient reading of characters, arrays, and lines.

它有两个构造函数：

    /**
     * Creates a buffering character-input stream that uses an input buffer of
     * the specified size.
     *
     * @param  in   A Reader
     * @param  sz   Input-buffer size
     *
     * @exception  IllegalArgumentException  If sz is <= 0
     */
    public BufferedReader(Reader in, int sz)

和

    /**
     * Creates a buffering character-input stream that uses a default-sized
     * input buffer.
     *
     * @param  in   A Reader
     */
    public BufferedReader(Reader in)

另外，也有几个基本方法：

    public int read(char cbuf[], int off, int len) throws IOException
    public  String readLine(boolean ignoreLF) throws IOException

    public String readLine() throws IOException