File Interface Examples

Extending existing programs to network filesystems should be straightforward using the extensions provided. You simply replace declarations of type java.io.FileXYZ with the counterpart java.io.XFileXYZ. Here are a few simple examples of applications that use the APIs:

Example 2-2 Using Streams Interface

import java.io.*;
import java.net.*;
import com.sun.xfile.*;

XFile xf = new XFile("file.txt");

if (xf.isFile()) {
     System.out.println("file is file");
}

if (xf.isDirectory()) {
     System.out.println("file is directory");
}

XFileInputStream nfis = null;
nfis = new XFileInputStream(xf);

for (int count = 0; ; count++) {
     int val = (byte) nfis.read();
     if (val == -1)
          break;
     System.out.write(val);
}

System.out.println("read " + count + " bytes ");

Example 2-3 Using the XRandomAccessFile Interface

import java.io.*;
import java.net.*;
import com.sun.xfile.*;

     // create connection to host

XFile xf = new XFile("nfs://ian/simple.html");

XRandomAccessFile xraf = new XRandomAccessFile(xf,"r");

int count = 10;

xraf.seek(count);
System.out.println("Value at position " + count
     + " is " + (byte)xraf.read());

System.out.println("Current file position is "
     + xraf.getFilePointer());

xraf.seek(0);

for (count = 0 ; count < 100 ; count++) {
     int val = xraf.read();
     if (val == -1)
          break;
     System.out.print(val);
}