一个io问题？

Question

try
{
InputStream filer = new FileInputStream("locad.txt");
//OutputStream out = new FileOutputStream(args[1]);
int date = filer.read();
while(date != -1)
{
//out.write(date);
System.out.write(date);
date = filer.read();
}
System.out.flush();//<---------------------加上这句
filer.close();
//out.close();
}

Answer 1

RandomAccessFile fin=new RandomAccessFile(args[0],"r");
String rLine;
long filePointer=0;
long length=fin.length();
String Str="";
while(filePointer<length)
{
   rLine=fin.readLine();
   System.out.println(rLine);
   filePointer=fin.getFilePointer();
 }
fin.close();