Process home directory in Java.

Hello.java

/**
 * Created by diabloneo on 10/1/14.
 */

import java.io.IOException;
import java.util.Scanner;
import java.nio.file.Paths;

public class Hello {

  public static void main(String[] args) {
    String wordFile = "~/tmp/words";
    try {
      Scanner in = new Scanner(Paths.get(wordFile.replace("~", System.getProperty("user.home"))));
      while (in.hasNext()) {
        System.out.println(in.nextLine());
      }
    } catch (IOException e) {
      System.out.println(e);
      System.exit(1);
    }
  }
}

Of course, you should consider about security problem.