examples/ListPeople.java

   1 // See README.txt for information and build instructions.
   2
   3 import com.example.tutorial.AddressBookProtos.AddressBook;
   4 import com.example.tutorial.AddressBookProtos.Person;
   5 import java.io.FileInputStream;
   6 import java.io.IOException;
   7 import java.io.PrintStream;
   8
   9 class ListPeople {
  10   // Iterates though all people in the AddressBook and prints info about them.
  11   static void Print(AddressBook addressBook) {
  12     for (Person person: addressBook.getPersonList()) {
  13       System.out.println("Person ID: " + person.getId());
  14       System.out.println("  Name: " + person.getName());
  15       if (person.hasEmail()) {
  16         System.out.println("  E-mail address: " + person.getEmail());
  17       }
  18
  19       for (Person.PhoneNumber phoneNumber : person.getPhoneList()) {
  20         switch (phoneNumber.getType()) {
  21           case MOBILE:
  22             System.out.print("  Mobile phone #: ");
  23             break;
  24           case HOME:
  25             System.out.print("  Home phone #: ");
  26             break;
  27           case WORK:
  28             System.out.print("  Work phone #: ");
  29             break;
  30         }
  31         System.out.println(phoneNumber.getNumber());
  32       }
  33     }
  34   }
  35
  36   // Main function:  Reads the entire address book from a file and prints all
  37   //   the information inside.
  38   public static void main(String[] args) throws Exception {
  39     if (args.length != 1) {
  40       System.err.println("Usage:  ListPeople ADDRESS_BOOK_FILE");
  41       System.exit(-1);
  42     }
  43
  44     // Read the existing address book.
  45     AddressBook addressBook =
  46       AddressBook.parseFrom(new FileInputStream(args[0]));
  47
  48     Print(addressBook);
  49   }
  50 }