/*
 *
 * FileInputDemo
 * Demonstrates the FileInputStream class
 * and DataInputStream
 */
import java.io.*;

class FileInputDemo 
{
	public static void main(String args[])
	{
		// args.length is equivalent to argc in C
		if (args.length == 1)
		{
			try
			{
				// Open the file that is the first 
				// command line parameter
				FileInputStream fstream = new 
					FileInputStream(args[0]);

				// Convert our input stream to a
				// DataInputStream
				DataInputStream in = 
					new DataInputStream(fstream);

				// Continue to read lines while 
				// there are still some left to read
				while (in.available() !=0)
				{
					// Print file line to screen
					System.out.println (in.readLine());
				}

				in.close();
			} 
			catch (Exception e)
			{
				System.err.println("File input error");
			}
		}
		else
                                System.out.println("Invalid parameters");
	}

}