小编Tma*_*122的帖子

当我尝试编译此代码时,第41-45行给出了一个"无法访问的代码"语句.当我输入几行来处理异常时,会发生同样的事情.我有什么不对劲吗？这是SAMS在24小时内自学Java一书中的修改示例代码.用它作为复习.

import java.util.*;
import java.util.concurrent.TimeUnit;
public class Clock {

public static void main(String[] arguments) {
    Calendar now = Calendar.getInstance();
    int hour = now.get(Calendar.HOUR_OF_DAY);
    int minute = now.get(Calendar.MINUTE);
    int month = now.get(Calendar.MONTH) + 1;
    int day = now.get(Calendar.DAY_OF_MONTH);
    int year = now.get(Calendar.YEAR);

    //Display greeting
    if (hour < 12){
        System.out.println("Good Morning! \n");
    }else if (hour < 17){
        System.out.println("Good afternoon! \n");
    } else {
        System.out.println("Good evening! \n");
    }
    //Time message start
    while(1 < 2){
         try
            {
                final String os = System.getProperty("os.name");

                if (os.contains("Windows")) …