时代Java

Java 类声明将时间保持在24

欢马劈雪

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类声明以24小时制保留时间

实例源码：

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public class Main /**来 自 时 代 J a v a - nowjava.com**/

{

public static void main(String[] args)

{

// create and initialize a Time1 object

Time1 time = new Time1(); // invokes Time1 constructor

// output string representations of the time

displayTime("After time object is created", time);

System.out.println();

// change time and output updated time

time.setTime(13, 27, 6); //时 代 J a v a - N o w J a v a . c o m 提 供

displayTime("After calling setTime", time);

System.out.println();

// attempt to set time with invalid values

try

{

time.setTime(99, 99, 99); // all values out of range

}

catch (IllegalArgumentException e)

{

System.out.printf("Exception: %s%n%n", e.getMessage());

}

// display time after attempt to set invalid values

displayTime("After calling setTime with invalid values", time);

}

// displays a Time1 object in 24-hour and 12-hour formats

private static void displayTime(String header, Time1 t)

{

System.out.printf("%s%nUniversal time: %s%nStandard time: %s%n",

header, t.toUniversalString(), t.toString());

}

class Time1

{

private int hour; // 0 - 23

private int minute; // 0 - 59

private int second; // 0 - 59

public void setTime(int hour, int minute, int second)

{

// validate hour, minute and second

if (hour < 0 || hour >= 24 || minute < 0 || minute >= 60 ||

second < 0 || second >= 60)

{

throw new IllegalArgumentException(

"hour, minute and/or second was out of range");

}

this.hour = hour;

this.minute = minute;

this.second = second;

}

// convert to String in universal-time format (HH:MM:SS)

public String toUniversalString()

{
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编辑于 2020-03-26 09:23:272020-03-26 09:23:27

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