Zmienna 'choice' nie pozwala na podanie jej wartości z klawiatury gdy wychodzę z "2. Add movie / series to the database\r".
import java.io.FileNotFoundException;
import java.io.FileOutputStream;
import java.io.IOException; // Signals that an I/O exception of some sort has occurred
import java.io.ObjectOutputStream;
import java.nio.file.Files; // This class consists exclusively of static methods that operate on files, directories, or other types of files
import java.nio.file.Paths; // An object that may be used to locate a file in a file system. It will typically represent a system dependent file path
import java.util.HashMap;
import java.util.Map;
import java.util.Scanner; // A class for reading data from the input
/** The main class of the program */
public class Database {
private static Scanner input = new Scanner(System.in);
static String choice;
/** Main method */
static public void main(String[] args) {
createTheRequiredFiles();
while(true) {
System.out.println("1. Browse data" );
System.out.println("2. Add movie / series to the database\r" );
System.out.print("\n Your choice: " );
choice = input.nextLine();
switch(choice) {
case "1": {
while(true) {
System.out.println("\n1. Movie database" );
System.out.println("2. Serials database\r" );
System.out.print("\n Your choice: " );
choice = input.next();
switch(choice) {
case "1": {
//////////////////
break;
}
case "2": {
//////////////////
break;
}
default: {
System.err.println("There is no such option in the menu!");
}
}
}
}
case "2": {
while(true) {
System.out.println("\n1. Add movie..." );
System.out.println("2. Add series..." );
System.out.println("9. Back\r" );
System.out.print("\n Your choice: " );
choice = input.nextLine();
if(choice.equals("9")) {
break;
}
switch(choice) {
case "1": {
addMovieToTheDatabase();
break;
}
case "2": {
addSeriesToTheDatabase();
break;
}
default: {
System.out.println("There is no such option in the menu2!");
}
}
}
}
default: {
System.err.println("There is no such option in the menu1!");
}
}
}
}
/** This method produces the required files */
static final void createTheRequiredFiles() {
try {
Files.createFile(Paths.get("movies.ser"));
Files.createFile(Paths.get("series.ser"));
} catch(IOException e) {}
}
/** This method adds the movie to the database */
static void addMovieToTheDatabase() {
String title, description, director, releaseDate;
int budget; int indexGenre, indexCountry; int rate;
Map<Integer, String> genres = new HashMap<Integer, String>(7);
genres.put(1, "Comedy");genres.put(2, "Adventure");genres.put(3, "Fantasy");
genres.put(4, "Animation");genres.put(5, "Horror");genres.put(6, "Thriller");
genres.put(7, "Action");
Map<Integer, String> country = new HashMap<Integer, String>(3);
country.put(1, "USA");country.put(2, "UK");country.put(3, "Poland");
System.out.print("\nTitle: ");
title = input.nextLine();
System.out.print("Description: ");
description = input.nextLine();
System.out.print("Director: ");
director = input.next();
System.out.print("Release date DD/MM/YYYY: ");
releaseDate = input.next();
System.out.print("Genre: ");
for(Integer i : genres.keySet()) {
System.out.print(i + ". " + genres.get(i) + " ");
}
System.out.print("\nChoice: ");
indexGenre = input.nextInt();
System.out.print("Country: ");
for(Integer i : country.keySet()) {
System.out.print(i + ". " + country.get(i) + " ");
}
System.out.print("\nChoice: ");
indexCountry = input.nextInt();
System.out.println("Budget: ");
budget = input.nextInt();
System.out.println("Rate 1-5: ");
rate = input.nextInt();
Movie movie = new Movie(title, description, director, releaseDate, genres.get(indexGenre),
country.get(indexCountry), budget, rate);
if(serialization(movie)) {
System.out.println("The film has been saved successfully!");
} else {
System.out.println("The film was not saved!");
}
}
/** This method serializes the object movie. */
static boolean serialization(Movie movie)
{
try {
ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream("movies.ser", true));
oos.writeObject(movie);
oos.close();
return true;
} catch (FileNotFoundException e) {
System.out.println("Can not find the file. Please try again later...");
return false;
} catch (IOException e) {
System.out.println("Unable to save file. Please try again later...");
return false;
}
}
/** This method adds the series to the database */
static void addSeriesToTheDatabase() {
String title, description, director, releaseDate;
int indexGenre, indexCountry; int rate;
Map<Integer, String> genres = new HashMap<Integer, String>(7);
genres.put(1, "Comedy");genres.put(2, "Adventure");genres.put(3, "Fantasy");
genres.put(4, "Animation");genres.put(5, "Horror");genres.put(6, "Thriller");
genres.put(7, "Action");
Map<Integer, String> country = new HashMap<Integer, String>(3);
country.put(1, "USA");country.put(2, "UK");country.put(3, "Poland");
System.out.print("\nTitle: ");
title = input.next();
System.out.print("Description: ");
description = input.nextLine();
input.nextLine();
System.out.print("Director: ");
director = input.nextLine();
System.out.print("Release date DD/MM/YYYY: ");
releaseDate = input.nextLine();
System.out.print("Genre: ");
for(Integer i : genres.keySet()) {
System.out.print(i + ". " + genres.get(i) + " ");
}
System.out.print("\nChoice: ");
indexGenre = input.nextInt();
System.out.print("Country: ");
for(Integer i : country.keySet()) {
System.out.print(i + ". " + country.get(i) + " ");
}
System.out.print("\nChoice: ");
indexCountry = input.nextInt();
System.out.println("Rate 1-5: ");
rate = input.nextInt();
Series series = new Series(title, description, director, releaseDate, genres.get(indexGenre),
country.get(indexCountry), rate);
if(serialization(series)) {
System.out.println("The film has been saved successfully!");
} else {
System.out.println("The film was not saved!");
}
}
/** This method serializes the object series */
static boolean serialization(Series series)
{
try {
ObjectOutputStream oos = new ObjectOutputStream(new FileOutputStream("series.ser", true));
oos.writeObject(series);
oos.close();
return true;
} catch (FileNotFoundException e) {
System.out.println("Can not find the file. Please try again later...");
return false;
} catch (IOException e) {
System.out.println("Unable to save file. Please try again later...");
return false;
}
}
}
Tak wynik
1. Browse data
2. Add movie / series to the database
Your choice: 2
1. Add movie...
2. Add series...
9. Back
Your choice: 9
1. Browse data
2. Add movie / series to the database
Your choice: There is no such option in the menu1!
Gdy wracam do głównego menu to wykonuje się automatycznie opcja 'default: '.
