Java stuff

import java.awt.*;
import java.util.*;
import java.io.*;
public class Interests {

    public static void main(String[] args) throws IOException
    {
        File inFile = new File("C:\\New Folder\\text1.txt");
        Scanner inScan = new Scanner(inFile);

        ArrayList<String> array1 = new ArrayList<String>(400);

        while (inScan.hasNextLine()) array1.add(inScan.nextLine());

        inFile = new File("C:\\New Folder\\text2.txt");
        inScan = new Scanner(inFile);

        while (inScan.hasNextLine()) array1.add(inScan.nextLine());

        Collections.sort(array1);

        Set<String> stringSet = new HashSet<String>();

        HashSet hs = new HashSet();
        hs.addAll(array1);
        array1.clear();
        array1.addAll(hs);

        FileWriter fstream = new FileWriter("C:\\New Folder\\final.txt");
        BufferedWriter out = new BufferedWriter(fstream);

        for (int a=0;a<array1.size();a++)
        {
            out.write(array1.get(a));out.write("\r\n");
        }

        out.close();
    }
}