java创建一个类实现读取一个文件中的每一行显示出来

importjava.io.*;

importjava.util.*;

classMyBufferReaderDemo{

privateFileReader fb;

MyBufferReaderDemo(FileReader fb){

this.fb=fb;

}

publicString BufferReader()throwsIOException{

StringBuilder s1=newStringBuilder();

intch=0;

while((ch=fb.read())!=-1)

{

if(ch=='\r')

continue;

if(ch=='\n')

returns1.toString();

else

s1.append((char)ch);

}

if(s1.length()!=0)

returns1.toString();

returnnull;

}

publicvoidmyClose()throwsIOException{

fb.close();

}

publicstaticvoidmain(String[] args)throwsIOException  {

// TODO Auto-generated method stub

FileReader f1=newFileReader("d:\\MyBufferReaderDemo.java");

MyBufferReaderDemo myb=newMyBufferReaderDemo(f1);

String line=null;

while((line=myb.BufferReader())!=null){

System.out.println(myb.BufferReader());

}

myb.myClose();

}

}