私は次のJavaクラスのうちの2つを持っています（以下にリストされています）クラスBookInfoは配列の静的ブロックを宣言します
public class BookInfo {
// Global arrays accessible by all methods
public static String[] isbnInfo;
public static String[] bookTitleInfo;
public static String[] authorInfo;
public static String[] publisherInfo;
public static String[] dateAddedInfo;;
public static int[] qtyOnHandInfo;
public static double[] wholesaleInfo;
public static double[] retailInfo;
static {
isbnInfo = new String[] {
"978-0060014018",
"978-0449221431",
"978-0545132060",
"978-0312474881",
"978-0547745527"
};
bookTitleInfo = new String[] {
"The Greatest Stories",
"The Novel",
"Smile",
"The Bedford Introduction to Drama",
"AWOL on the Appalachian Trail"
};
authorInfo = new String[] {
"Rick Beyer",
"James A. Michener",
"Raina Telgemeier",
"Lee A. Jacobus",
"David Miller"
};
publisherInfo = new String[] {
"HerperResource",
"Fawcett",
"Graphix",
"Bedford St. Martins",
"Mariner Books"
};
dateAddedInfo = new String[] {
"05/18/2003",
"07/07/1992",
"02/01/2010",
"09/05/2008",
"11/01/2011"
};
qtyOnHandInfo = new int[] {7, 5, 10, 2, 8};
wholesaleInfo = new double[] {12.91, 7.99, 6.09, 54.99, 10.17};
retailInfo = new double[] {18.99, 3.84, 4.90, 88.30, 14.95};
}
public static void BookInfo() {
System.out.println(" Serendipity Booksellers");
System.out.println(" Book Information\n");
for(int i = 0; i < isbnInfo.length; i++){
System.out.println("ISBN: " + isbnInfo[i]);
System.out.println("Title: " + bookTitleInfo[i]);
System.out.println("Author: " + authorInfo[i]);
System.out.println("Publisher: " + publisherInfo[i]);
System.out.println("Date Added: " + dateAddedInfo[i]);
System.out.println("Quantity-On-Hand: " + qtyOnHandInfo[i]);
System.out.println("Wholesale Cost: $ " + wholesaleInfo[i]);
System.out.println("Retail Price: $ " + retailInfo[i]);
System.out.println();
}
}
}
このクラスから配列リストにアクセスするにはどうすればよいですか？これまでのところ、以下のみが機能していますが、このクラスから変更（追加、削除、編集など）するにはどうすればよいですか（このクラスにはメインメインはありません）BookInfo bookinfo = new BookInfo（）; bookinfo.BookInfo（）; System.out.println（bookinfo.isbnInfo [0]）; メインメニューから変更（追加、削除、編集など）するにはどうすればよいですか？
import java.util.Scanner;
public class InvMenu {
public static void addBook(){
System.out.println("\nYou selected Add a Book\n");
BookInfo bookinfo = new BookInfo();
bookinfo.BookInfo(); // only these two are working but I cannot modify arrays at all
System.out.println(bookinfo.isbnInfo[0]);
}
public static void editBook(){
System.out.println("\nYou selected Edit a Book's Record\n");
}
public static void deleteBook(){
System.out.println("\nYou selected Delete a Book\n");
}
public static void printInvMenu(){
String choice;
int x = 0;
boolean b;
char letter;
boolean menu = true;
Scanner keyboard = new Scanner(System.in);
System.out.println("Serendipity Booksellers");
System.out.println("Inventory Database\n");
System.out.println(" 1. Look Up a Book");
System.out.println(" 2. Add a Book");
System.out.println(" 3. Edit a Book's Record");
System.out.println(" 4. Delete a Book");
System.out.println(" 5. Return to the Main Menu\n");
do{
System.out.print("Enter your choice: ");
choice = keyboard.nextLine();
b = true;
try {
x = Integer.parseInt(choice);
System.out.println(x);
}
catch(NumberFormatException nFE) {
b = false;
System.out.println("You did not enter a valid choice. Try again!\n");
}
}while(b == false);
do{
else if(x == 1){
addBook();
}
else if(x == 2){
editBook();
}
else if(x == 3){
deleteBook();
}
else if(x == 4){
System.out.println("Returning to the Main Menu\n");
break;
}
else{
System.out.println("\nYou did not enter a valid choice. Try again!\n");
}
printInvMenu();
}while(x == 5);
}
}
他のクラスのメインメニューからいくつかの機能に簡単にアクセスできます。BookInfobookinfo=new BookInfo（）; bookinfo.BookInfo（）; System.out.println（bookinfo.isbnInfo [0]）; メインメニューから変更（追加、削除、編集など）するにはどうすればよいですか？任意のアイデア、提案は大歓迎です！