private static void lookupEntry(InOut in, AddressBook book) {
String name = in.nextLine("Enter name: ");
String key = in.nextLine("Enter key: ");
String value = book.get(name, key);
if (value == null) in.message("No entry");
else in.message("Value: " + value);
}
private static void removeEntry(InOut in, AddressBook book) {
String name = in.nextLine("Enter name: ");
String key = in.nextLine("Enter key: ");
String value = book.remove(name, key);
if (value == null) in.message("entry not found");
else in.message("Removed entry with value: " + value);
}
private static void addChangeEntry(InOut in, AddressBook book) {
String name = in.nextLine("Enter name: ");
String key = in.nextLine("Enter key: ");
String value = in.nextLine("Enter value: ");
String oldValue = book.put(name, key, value);
if (oldValue == null) in.message("Entry added");
else in.message("Entry updated");
}
