protobuf/examples/ListPeople.java
Chris Rebert 9d175493a3 addressbook.proto: Enable java_multiple_files option
And update the java_package value accordingly.
Enabling java_multiple_files is preferred nowadays.
Refs CL 348101638 which updates the tutorial accordingly.
2021-04-06 10:07:52 -07:00

54 lines
1.6 KiB
Java

// See README.txt for information and build instructions.
import com.example.tutorial.protos.AddressBook;
import com.example.tutorial.protos.Person;
import java.io.FileInputStream;
import java.io.IOException;
import java.io.PrintStream;
class ListPeople {
// Iterates though all people in the AddressBook and prints info about them.
static void Print(AddressBook addressBook) {
for (Person person: addressBook.getPeopleList()) {
System.out.println("Person ID: " + person.getId());
System.out.println(" Name: " + person.getName());
if (!person.getEmail().isEmpty()) {
System.out.println(" E-mail address: " + person.getEmail());
}
for (Person.PhoneNumber phoneNumber : person.getPhonesList()) {
switch (phoneNumber.getType()) {
case MOBILE:
System.out.print(" Mobile phone #: ");
break;
case HOME:
System.out.print(" Home phone #: ");
break;
case WORK:
System.out.print(" Work phone #: ");
break;
default:
System.out.println(" Unknown phone #: ");
break;
}
System.out.println(phoneNumber.getNumber());
}
}
}
// Main function: Reads the entire address book from a file and prints all
// the information inside.
public static void main(String[] args) throws Exception {
if (args.length != 1) {
System.err.println("Usage: ListPeople ADDRESS_BOOK_FILE");
System.exit(-1);
}
// Read the existing address book.
AddressBook addressBook =
AddressBook.parseFrom(new FileInputStream(args[0]));
Print(addressBook);
}
}