I want to convert if to switch. Can anyone help me?

I want to change if to switch...can someone help me with that? I ve been trying but nothing worked... please help me with this Please please please please

I want to change if to switch...can someone help me with that? I ve been trying but nothing worked... please help me with this Please please please please

    if(choose==1){
            System.out.println("Milk");
            System.out.print("How many items do you want to add? :");
            quantity =input.nextInt();
            total = total +(quantity*1);
            
            System.out.println("Continue? ");
            System.out.println("Type in Yes or No : ");
            again = input.next();
            if(again.equalsIgnoreCase("Yes")){
                add();//call the method you to create 
            }else{
                System.out.println("Payment (add amout of money you give)");
                pay = input.nextDouble();
                if(pay <=total){
                  System.out.println("Payment failed");
                }else{
                System.out.println("Total price is " + total);
                total = pay-total;
                System.out.println("The change is " + total);
                }
            }
        }else if(choose==2){
            System.out.println("Tea");
            System.out.print("How many items do you want to add? :");
            quantity =input.nextInt();
            total = total +(quantity*2.78);
            
            System.out.println("Continue?");
            System.out.println("Type in Yes or No");
            again = input.next();
            if(again.equalsIgnoreCase("Yes")){
                add();//call the method you to create 
            }else{
                System.out.println("Payment (add amout of money you give)");
                pay = input.nextDouble();
                if(pay <=total){
                  System.out.println("Payment failed");
                }else{
                System.out.println("Total price is " + total);
                total = pay-total;
                System.out.println("The change is " + total);
                }
            }
          }

                
            }