如何在Java中使用Switch进行字符串匹配

在Java中，从Java 7开始，您可以在switch语句中使用字符串

public class SwitchStringExample {
    public static void main(String[] args) {
        String day = "Monday";

        switch (day) {
            case "Monday":
                System.out.println("It's Monday! Start of the work week.");
                break;
            case "Tuesday":
                System.out.println("It's Tuesday! Second day of the week.");
                break;
            case "Wednesday":
                System.out.println("It's Wednesday! Middle of the week.");
                break;
            case "Thursday":
                System.out.println("It's Thursday! Almost weekend.");
                break;
            case "Friday":
                System.out.println("It's Friday! End of the work week.");
                break;
            case "Saturday":
                System.out.println("It's Saturday! Weekend!");
                break;
            case "Sunday":
                System.out.println("It's Sunday! Relax and enjoy.");
                break;
            default:
                System.out.println("Invalid day entered.");
                break;
        }
    }
}

在这个例子中，我们定义了一个名为day的字符串变量，并使用switch语句来匹配它。根据day的值，程序将打印相应的消息。如果day的值与任何case子句都不匹配，将执行default子句并打印"Invalid day entered."。