I am learning the parametrized classes. My problem is not related with thing I am learning now, but I have a problem. Here is my code:
import java.util.InputMismatchException;
import java.util.Scanner;
public class Driver
{
public static void main(String[] args)
{
int command = 0;
boolean makeNextLoop = true;
CuppingGlass<Thing> banka = new CuppingGlass<>();
while (makeNextLoop)
{
System.out.println("\tMenu:\n1 - Fill the cupping glass\n2 - Make the cupping glass empty\n3 - Find the biggest one in the cupping glass\n4 - Find the smallest one in the cupping glass\n5 - Show all thi things in the cupping glass\n0 - Quit\n\nEnter the command:\t");
try(Scanner cin = new Scanner(System.in))
{
command = cin.nextInt();
}
catch (InputMismatchException i)
{
System.out.println("ERROR!!! Command you have entered does not exist.");
}
switch (command)
{
case 1 -> //Fill the cupping glass
{
System.out.println("What exactly you wanna put to the cupping glass?\n1 - Tomatoes\n2 - Cucumbers\n0 - Go back\n\nEnter the command:\t");
//this line is throwing exception:
try (Scanner cin = new Scanner(System.in))
{
command = cin.nextInt();
}
catch (InputMismatchException i)
{
System.out.println("ERROR!!! Command you have entered does not exist.");
}
switch (command)
{
case 1 -> //Putting in tomatoes
{
Tomato[] tomatoes = new Tomato[10];
for (int i = 0; i < tomatoes.length; i++) {
tomatoes[i] = new Tomato();
}
banka.put(tomatoes);
}
case 2 -> //Putting in cucumbers
{
Cucumber[] cucumbers = new Cucumber[10];
for (int i = 0; i < cucumbers.length; i++) {
cucumbers[i] = new Cucumber();
}
banka.put(cucumbers);
}
case 0 -> //Go back;
System.out.println();
default -> throw new IllegalStateException("Command does not exists: " + command);
}
}
case 2 -> //Make the cupping glass empty
banka.makeEmpty();
case 3 -> //Find the biggest element of cupping glass
System.out.println("The biggest one is " + banka.findBiggest() + "cm long.");
case 4 -> //Find the smallest element of cupping glass
System.out.println("The smallest one is " + banka.findSmallest() + "cm long.");
case 5 -> //Show all the things in cupping glass
banka.showAll();
case 0 -> //quit
{
System.out.println("See you soon. Have a nice day!");
makeNextLoop = false;
}
default -> throw new IllegalStateException("Command does not exists: " + command);
}
}
}
}
My problem looks like "NoSuchElementException". This exception is caused by moment, where I call the second "try" block (case 1 // Fill the cupping glass). Help me, please...
P.S. I am sorry if my english is not good enough.
