DO..WHILE.. 使用 SWITCH 菜单

Question

Here is a do..while loop with switch menu..

I am trying to make the user be able to return to the menu which is

System.out.println("Options: (C)reate, (R)ead, (W)rite, (L)ist, (S)ave or (E)xit.        (*****)");

But after much trial and errors, I still cant get back to the main menu after choosing C, R, W, L or S.

Below is a short snippet of the codes..

do {
    System.out.println("Options: (C)reate, (R)ead, (W)rite, (L)ist, (S)ave or (E)xit.   
    (*****)");
    Scanner switchC = new Scanner(System.in);
    System.out.println("Please enter your choice: ");
    choice = switchC.next().charAt(0);

    switch (Character.toUpperCase(choice)) {
        case 'C':
    System.out.println("C");
            break;
        case 'R':
            break;
        case 'W':
            break;
        case 'L':
            break;
        case 'S':
            break;
        case 'E':
            System.exit(1);
        default:
            System.out.println("Options: (C)reate, (R)ead, (W)rite, (L)ist, (S)ave or (E)xit.        (*****)");
        } 
} while(choice!='E');

Answer 1

try

do{

}
while(Character.toUpperCase(choice) !='E')

Answer 2

如何检查用户是否误按了任何选项？