Byte Stream --字节流

package com.cmm.io4;import java.io.*;public class FileIo {    /**     * @param args     * @author cmm     * @Title: FileOutputStream & FileInputStream -- Byte Stream     */    public static void main(String[] args) throws Exception {        // TODO Auto-generated method stub        // OutputStream out = null;        // out = new FileOutputStream(new File("F:\\cmm.txt"));                /* FileOutputStream */        File f = new File("F:\\cmm.txt");        FileOutputStream out = new FileOutputStream(f);                String str = "Cmm welcome to my board htx";        out.write(str.getBytes("GB2312"));        out.close();                /* FileInputStream */        FileInputStream in = new FileInputStream(f);        byte b[] = new byte[500];        int len = 0;        len = in.read(b);        in.close();        System.out.println(new String(b, 0, len));    }}

 

Char Stream --字符流（用到了缓存）

package com.cmm.io4;import java.io.*;public class RWTest {    /**     * @param args     * @author cmm     * @Tilte: Reader/Writer --Char Stream     */    public static void main(String[] args)  throws Exception    {        File f = new File("F:\\cmm.txt");        /* Write Output char stream */        // Writer out = null;        FileWriter out = new FileWriter(f);        String str = "So wat  are you do now? ";        out.write(str);        out.flush();        out.close();        /* Read Input char stream */        // Reader in = null;        FileReader in = new FileReader(f);        char ch[] = new char[500];        int len = 0;        len = in.read(ch);        in.close();        System.out.println(new String(ch, 0, len));    }}