Java Tidbits ....................... reading streams from File

1) FileReader fop = new FileReader(f);   // file or string
int n =0;
       
  while ((n=fop.read())!=-1)     // read a single character from file
      System.out.print((char )n);
in above  code  we can use read(byte[]) too .
in that case it will read the data from file and  populate in a defined  byte array that can be printed / used later  in next example done like that .


2) FileInputStream fis = new FileInputStream(f);  // file or string
byte b[] = new byte[1048];
System.out.println(fis.read(b));

3)  InputStream can be piped to InputStreamReader
     InputStreamReader reader = new InputStreamReader(fis);    // inputstream

4) Any reader instance can be piped to BufferedReader .
   BufferedReader bufferedReader = new BufferedReader(fop);  // Reader instance is required
    BufferedReader bufferedReader = new BufferedReader(reader);// allowed instance of reader
we can readLine from BufferedReader.