import java.util.Scanner;

public class Post {

public static void main(String[] args) { 
    Scanner sc = new Scanner(System.in);
    System.out.print("Enter the letter type: "); 
    String type = sc.nextLine();
    processLetter(type); 
    }

private static void post(String type) {
    throw new UnsupportedOperationException("Not yet implemented");
    }

private static void post() {
    throw new UnsupportedOperationException("Not yet implemented");
    }

private static class Process {

public Process() { 
} 
}

private static void processLetter(String input) {
    if (input.equalsIgnoreCase("bill")) {
        System.out.println("Bills must be paid."); 
        } else if (input.equalsIgnoreCase("circular")) {
            System.out.println("Circulars are thrown away."); 
            } else if (input.equalsIgnoreCase("postcard")) {
                System.out.println("Postcards are put on the wall."); 
                } 
                else if (input.equalsIgnoreCase("letter")) { 
                    System.out.println("Personal letters are read and have replies written for them."); 
                    } 
                    else { 
                        System.out.println("Not recognized.");
                        } 
                        } 
                        }