Unable to compile my java program in TextPad or Eclipse

Question

Hello - Finals are next week and I have one last assignment due....and my harddrive crashed last week. I reinstalled everything and set environment variables. When I open my program in TextPad and press ctrl-1 to compile nothing happens. Nothing happens with ctrl-2 (to run) either.
In eclipse, I open the files and try to run the java file with the main method but I get "Selection does not contain a main type" error! I don't know what to do and I am at a standstill and I failed finding helpful information on my own.
Please help!
import java.util.Scanner;
import java.io.*;
import java.util.ArrayList;
public class BookPrinter {
     public static void main(String args)
          try
               FileReader reader = new FileReader("input.txt");
               Scanner in = new Scanner(reader);
               String inputFile = "";
               while(in.hasNext())
                    inputFile.concat(in.nextLine());
               Book b = new Book(inputFile);
               System.out.println("The book's size is: " + b.bookSize());
               System.out.println("\nThe number of times \"the\" occurs in the book: " + b.count("the"));
               System.out.println("\nThe longest word in the book: " + b.longest());
               ArrayList<String> longList = b.allLongest();
               System.out.println("\nThe words that are all the longest length: ");
               while(longList.size() > 0)
                    for(String e: longList)
                         System.out.println(e);
          catch(FileNotFoundException exception)
               System.out.println("Error processing file: " + exception);
}

Answer 1

This:
public static void main(String args)is wrong.
You want this:
public static void main(String[] args)Understand the difference?