java 在“switch’语中进行字符串与枚举比较的示例:

以下是Java中在`switch`语句中进行字符串与枚举比较的示例：

字符串比较：

String str = "hello";
switch(str) {
    case "hello":
        System.out.println("Hello World!");
        break;
    case "bye":
        System.out.println("Goodbye!");
        break;
    default:
        System.out.println("Invalid input!");
}

枚举比较：

enum Day {
    MONDAY, TUESDAY, WEDNESDAY, THURSDAY, FRIDAY, SATURDAY, SUNDAY
}

Day day = Day.MONDAY;
switch(day) {
    case MONDAY:
        System.out.println("Today is Monday!");
        break;
    case TUESDAY:
        System.out.println("Today is Tuesday!");
        break;
    case WEDNESDAY:
        System.out.println("Today is Wednesday!");
        break;
    case THURSDAY:
        System.out.println("Today is Thursday!");
        break;
    case FRIDAY:
        System.out.println("Today is Friday!");
        break;
    case SATURDAY:
        System.out.println("Today is Saturday!");
        break;
    case SUNDAY:
        System.out.println("Today is Sunday!");
        break;
}

在Java 7之前，`switch`语句只支持整数类型、字符类型和枚举类型的比较。在Java 7中，可以使用字符串进行比较。