几个错误

Question

当我在Mac上的终端中调用此代码时，它告诉我“无法找到或加载主类”，它也会在我的所有关于printf的代码上给出很多错误。

我是Java的新手，所以我认为这段代码是错误的。

所有我真正想问的是如何修复它，以便当我键入“java itemprice”时它将在终端中运行，因为它不显示错误。

另外，我想要一些system.out.printf代码的帮助。

import java.util.Scanner;

public class itempricecalc {
    public static void main(String[] args){
    Scanner scanner = new Scanner(System.in);
    System.out.print("What is your first name?");
    String fname = scanner.nextLine();
    String invf = fname.substring(0,2);

    System.out.print("What is your last name?");
    String lname = scanner.nextLine();
    String invl = lname.substring(0,2);

    System.out.println("Your name is: " +fname + lname);



    System.out.println("What is your zipcode?");
    int zipcode = scanner.nextInt();

    invoice = (invf + invl + zipcode);

    double salestax = 6.25;

    double subtotal = 0;

    System.out.println("What is item 1 called?")
    String itemonename = scanner.nextLine():

    System.out.println("Enter price of item 1");
    double itemone = scanner.nextDouble();

    System.out.println("How many of item 1 did you purchase?");
    int itemoneamount = scanner.nextInt();

    System.out.println("What is item 2 called?")
    String itemtwoname = scanner.nextLine():

    System.out.println("Enter price of item 2");
    double itemtwo = scanner.nextDouble();

    System.out.println("How many of item 2 did you purchase?");
    int itemtwoamount = scanner.nextInt();

    System.out.println("What is item 3 called?")
    String itemthreename = scanner.nextLine():

    System.out.println("Enter price of item 3");
    double itemthree = scanner.nextDouble();

    System.out.println("How many of item 3 did you purchase?");
    int itemthreeamount = scanner.nextInt();

    double itemonetp = itemoneamount * itemone;
    double itemtwotp = itemtwoamount * itemtwo;

    double totalprice = itemonetp + itemtwotp;

    subtotal = subtotal + totalprice;

    double taxtotal = subtotal * salestax;

    System.out.print("Your name is: " + fname + " " + lname)
    System.out.printf(“Invoice: %.2f”, invoice);
    System.out.printf(“Total price of item one is + %.2f”, itemonetp);
    System.out.printf(“Total price of item two is + %.2f”, itemtwotp);
    System.out.printf(“Total price of your purchase is + %.2f”, totalprice);
    System.out.printf(“Your total with tax comes to + %.2f”, taxtotal);
    System.out.printf(“You purchased + %.2f + amount of item one”, itemoneamount);
    System.out.printf(“You purchased + %.2f + amount of item two”, itemtwoamount);



}       

}