Java 类声明将时间保持在24
类声明以24小时制保留时间
实例源码：
源代码：
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public class Main /**来 自 时 代 J a v a - nowjava.com**/3
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{5
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public static void main(String[] args)7
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{9
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// create and initialize a Time1 object11
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Time1 time = new Time1(); // invokes Time1 constructor13
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// output string representations of the time16
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displayTime("After time object is created", time);18
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System.out.println(); 20
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// change time and output updated time 23
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time.setTime(13, 27, 6); //时 代 J a v a - N o w J a v a . c o m 提 供25
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displayTime("After calling setTime", time);27
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System.out.println(); 29
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// attempt to set time with invalid values32
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try34
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{36
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time.setTime(99, 99, 99); // all values out of range38
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} 40
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catch (IllegalArgumentException e)42
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{44
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System.out.printf("Exception: %s%n%n", e.getMessage());46
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} 48
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// display time after attempt to set invalid values51
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displayTime("After calling setTime with invalid values", time);53
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} 55
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// displays a Time1 object in 24-hour and 12-hour formats58
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private static void displayTime(String header, Time1 t)60
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{62
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System.out.printf("%s%nUniversal time: %s%nStandard time: %s%n",64
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header, t.toUniversalString(), t.toString());66
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} 68
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}70
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class Time1 72
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{74
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private int hour; // 0 - 2376
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private int minute; // 0 - 5978
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private int second; // 0 - 5980
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public void setTime(int hour, int minute, int second)83
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{85
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// validate hour, minute and second87
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if (hour < 0 || hour >= 24 || minute < 0 || minute >= 60 || 89
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second < 0 || second >= 60) 91
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{93
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throw new IllegalArgumentException(95
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"hour, minute and/or second was out of range");97
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}99
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this.hour = hour;102
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this.minute = minute;104
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this.second = second;106
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} 108
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// convert to String in universal-time format (HH:MM:SS)111
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public String toUniversalString()113
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{115
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