BufferedInputStream（缓冲输入流） 示例
//Used buffered input.import java.io.*;
class BufferedInputStreamDemo{
public static void main(String[] args) throws IOException{
String s = "This is a © copyright symbol but this is &copy not.\n";
byte buf[] = s.getBytes();
ByteArrayInputStream in = new ByteArrayInputStream(buf);
BufferedInputStream f = new BufferedInputStream(in);
int c;
boolean marked = false;
while((c=f.read()) !=-1){
switch(c){
case '&':
if(!marked){
f.mark(32);
marked = true;
}else{
marked = false;
}
break;
case ';':
if(marked){
marked = false;
System.out.print("(c)");
}else{
System.out.print((char)c);
}
break;
case ' ':
if(marked){
marked = false;
f.reset();
System.out.print("&");
}else{
System.out.print((char)c);
}
break;
default:
if(!marked){
System.out.print((char)c);
}
break;
}
}
}
}
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