Help for Menu

Question

hi everyone,
i am very new in java. i am having problem in SWITCH CASE STATEMENT. can anyone please help me to solve the following problem:
you have to write a program in java to generate the following menu with submenus:
about linked List
1: ADD ELEMENT
1-1: add first
1-2: add last
1-3: back to main menu
2: REMOVE ELEMENT
2-1: remove first
2-2: remove in between
2-3: remove last
2-4: back to main menu
3: OTHER FUNCTIONS
3-1: peek first
3-2: peek last
3-3: poll first
3-4: poll last
3-5: back to main
4: DISPLAY
5. EXIT
thank you,
regards,
al_buotan

Answer 1

public class MidProj
public static void main(String[] args)
Scanner con = new Scanner(System.in);
LinkedList<Integer> lst = new LinkedList<Integer>();
int x;
int x1;
System.out.print("1. Add Element \n 2. Remove Element \n 3. Other Functions \n 4. Display \n 5. Exit \n Enter your choice: ");
x = con.nextInt();
switch (x)
case 1: System.out.print("1. Add First \n 2. Add Last \n 3. Back to Main Menu \n Enter your choice: ");
x1 = con.nextInt();
switch (x1)
case 1: System.out.println("Add First: "); lst.addFirst;
break;
case 2: lst.addLast;
break;
case 3:
case 2: menuB();
break;
case 3: menuC();
break;
case 4: System.out.println(lst);
break;
case 5: System.exit();
}