唯一注意的一点
字符缓冲流的输出流有新方法，不能多态。
字节缓冲流

public class 字节缓冲流输入流 {//选择源public static void main(String[] args) {File file = new File("king.txt");//选择流InputStream in= null;try {in = new BufferedInputStream(new FileInputStream(file));//在此处做了包装//操作(分段读取)byte [] flush =new byte [128];//缓冲容器int len = -1;//接收容器while((len = in.read(flush))!=-1) {String str=new String(flush,0,len);//字节数组-->字符串  解码System.out.println(str);}} catch (FileNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}finally {//释放资源if(null!=in) {try {in.close();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}}}

public class 字节缓冲流输出流 {
public static void main(String[] args) {//选择源File file  =new File("king.txt");//选择流OutputStream output =null;try {output = new BufferedOutputStream(new FileOutputStream(file ,true));//操作String s ="我又来了";byte [] n=s.getBytes();//编码output.write(n, 0, n.length);output.flush();//刷新} catch (FileNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}finally {//关闭流if(null!=output) {try {output.close();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}}}
}

字符缓冲流 之文本的copy

public class 字符缓冲流之文本的copy {public static void main(String[] args) {copy("文件字符流测试.txt","t.txt");}public static void copy(String srcpath,String destpath) {//选择源//File file1  =new File("1.jpg");//File file2  =new File("copy.jpg");File file1  =new File(srcpath);File file2  =new File(destpath);//选择流try(BufferedReader in =new BufferedReader(new FileReader(file1));//加缓冲流BufferedWriter out = new BufferedWriter(new FileWriter(file2))){//try() 释放资源//操作String line =null;while((line =in.readLine())!=null) {out.write(line);//逐行写出out.newLine();//换行}} catch (FileNotFoundException e) {// TODO Auto-generated catch blocke.printStackTrace();} catch (IOException e) {// TODO Auto-generated catch blocke.printStackTrace();}}
}