import java.io.*;
import java.util.*;

public class CopyFile {
	private static ArrayList<File> files = new ArrayList<File>();
	private static ArrayList<FileReader> readers = new ArrayList<FileReader>();
	private static String result;
	private static BufferedWriter writer;

	public static void main(String[] args){
		try{
			for(int i = 0; i < args.length-1; i++){
				files.add(new File(args[i]));
			}
			result = args[args.length-1];
		}catch(Exception e){
			System.out.println("Du har ikke nok argumenter");
		}
		try {
			writer = new BufferedWriter(new FileWriter(result));
		} catch (IOException e) {
			System.out.println("Grraaw, det virker ikke");
		}

		for(File f : files){
			try{
				readers.add(new FileReader(f));
			}catch(FileNotFoundException e){
				System.out.println("Ohøj, en af dine filer findes ikke matey");
			}
			BufferedReader bReader = null;

			try{
				for(FileReader fr : readers){
					bReader = new BufferedReader(fr);
					int i = bReader.read();
					System.out.println(i);
					while(i != -1){
						writer.write(i);
						i = bReader.read();
					}
					System.out.println("File: " + i);
					fr.close();
				}
				bReader.close();
				writer.close();

			}catch(IOException e){
				System.out.println("Noget gik galt skipper"); e.printStackTrace();
				return;
			}
		}
	}
}