InputStream

1） File file = new File ("hello.txt"); 
FileInputStream in=new FileInputStream (file); 
2） File file = new File ("hello.txt"); 
FileInputStream in=new FileInputStream (file); 
InputStreamReader inReader=new InputStreamReader (in,"UTF-8"); 
BufferedReader bufReader=new BufferedReader(inReader); 
3） File file = new File ("hello.txt"); 
FileReader fileReader=new FileReader(file); 
BufferedReader bufReader=new BufferedReader(fileReader);