java - DO.. WHILE.. 使用 SWITCH 菜单

Question

这是一个带有切换菜单的 do..while 循环..

我试图让用户能够返回到菜单

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

但是经过多次尝试，我在选择C、R、W、L或S后仍然无法返回主菜单。

下面是一小段代码..

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

尝试

do{

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