LocalDateTime变量停止运行[关闭]

问题描述 投票:-4回答:1

当我第一次运行我的代码时(下面),它打印出实时时间(忽略“LOL”,这是出于调试目的..),但是我一直在运行它一段时间,同时做其他的事情和我意识到它不再打印实时时间,只是它第一次运行它时注册的时间。码:

 public static String classCheck(){
        DateTimeFormatter dtf = DateTimeFormatter.ofPattern("HH:MM");  
        LocalDateTime now = LocalDateTime.now();  
        System.out.println(dtf.format(now)+"LOL");
        int currentTime = toMins(dtf.format(now));
        //Beging collecting preset class timings..
        String classOneBegin = "11:00", classTwoBegin = "12:30", classThreeBegin = "14:00", classFourBegin = "16:30", classFourEnd = "18:00";
        int classOneBeginX, classTwoBeginX, classThreeBeginX, classFourBeginX, classFourEndX;

        classOneBeginX = timeCheck.toMins(classOneBegin);
        classTwoBeginX = timeCheck.toMins(classTwoBegin);
        classThreeBeginX = timeCheck.toMins(classThreeBegin);
        classFourBeginX = timeCheck.toMins(classFourBegin);
        classFourEndX = timeCheck.toMins(classFourEnd);
        //...End. I feel confident that I could've found a faster, more inclusive solution to this, but time is of the essence..
        //Now to compare the time with each "cycle" and return an int that represent the current class. 
        if (currentTime >= classOneBeginX && currentTime <= classTwoBeginX) {
            return "4";
        }else if(currentTime >= classTwoBeginX && currentTime <= classThreeBeginX){
            return "1";
        }else if(currentTime >= classThreeBeginX && currentTime <= classFourBeginX){
            return "2";
        }else if(currentTime >= classFourBeginX && currentTime <= classFourEndX){
            return "3";
        }else return "0"; //Outside of class time ..

    }

我不确定问题的确切位置,这里的焦点代码是第2~4行

DateTimeFormatter dtf = DateTimeFormatter.ofPattern("HH:MM");  
LocalDateTime now = LocalDateTime.now();  
System.out.println(dtf.format(now)+"LOL");

它停留在2:04,但现在是3:08,我期待每次运行我的代码时它会打印实时时间(+“LOL”......)

java date format formatter
1个回答
1
投票

正如@SotiriosDelimanolis在评论中指出的那样,这个问题的答案是,编码“HH:MM”是不正确的。我应该用“HH:mm”代替。

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