/* Copy a file. To use this program, specify the name of the source file and the destination file. 
For example, to copy a file called FIRST.TXT to a file called SECOND.TXT, use the following command line.
java CopyFile FIRST.TXT SECOND.TXT */
import java.io.*;
class CopyFile {
	public static void main(String args[ ]) throws IOException{
		int i;
		FileInputStream fin = null;
		FileOutputStream fout = null;
		// First, confirm that both files have been specified at command line.
		if(args.length != 2) {
			System.out.println("Usage: CopyFile from to");
			return;
		}
		// Copy a File.
		try {
			// Attempt to open the files.
			fin = new FileInputStream(args[0]);
			fout = new FileOutputStream(args[1]);
			do {
				i = fin.read( );
				if(i != -1)
					fout.write(i);
			} while(i != -1);
		} catch(IOException e) {
			System.out.println("I/O Error: " +e);
		} finally {
			try {
				if(fin != null)
				fin.close( );
			} catch(IOException e2) {
				System.out.println("Error Closing Input File");
			}
			try {
				if(fout != null)
				fout.close( );
			} catch(IOException e2) {
				System.out.println("Error Closing Output File");
			}
		}
	}
}