有時(shí)候會(huì)要求實(shí)現(xiàn)這樣一個(gè)需求：
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天、小時(shí)、分鐘、秒的數(shù)值都是隔開的，服務(wù)器端只返回一個(gè)時(shí)間戳長(zhǎng)度。
以下就是我的實(shí)現(xiàn)方案，力求減少對(duì)象生成、減小計(jì)算量：
重慶分公司
重慶分公司
import java.util.Timer;
import java.util.TimerTask;
public class CountDownUtils {
private static long day = 0;
private static long hour = 0;
private static long minute = 0;
private static long second = 0;
private static boolean dayNotAlready = false;
private static boolean hourNotAlready = false;
private static boolean minuteNotAlready = false;
private static boolean secondNotAlready = false;
public static void main(String[] args) {
long totalSeconds = 60 * 60 * 24 * 34 + 21;
initData(totalSeconds);
new Timer().schedule(new TimerTask() {
public void run() {
if (secondNotAlready) {
startCount();
} else {
cancel();
}
}
}, 0, 1000);
}
/**
* 初始化賦值
*
* @param totalSeconds
*/
private static void initData(long totalSeconds) {
resetData();
if (totalSeconds > 0) {
secondNotAlready = true;
second = totalSeconds;
if (second >= 60) {
minuteNotAlready = true;
minute = second / 60;
second = second % 60;
if (minute >= 60) {
hourNotAlready = true;
hour = minute / 60;
minute = minute % 60;
if (hour > 24) {
dayNotAlready = true;
day = hour / 24;
hour = hour % 24;
}
}
}
}
System.out.println("初始格式化后——>" + day + "天" + hour + "小時(shí)" + minute
+ "分鐘" + second + "秒");
}
private static void resetData() {
day = 0;
hour = 0;
minute = 0;
second = 0;
dayNotAlready = false;
hourNotAlready = false;
minuteNotAlready = false;
secondNotAlready = false;
}
/**
* 計(jì)算各個(gè)值的變動(dòng)
*
*/
public static void startCount() {
if (secondNotAlready) {
if (second > 0) {
second--;
if (second == 0 && !minuteNotAlready) {
secondNotAlready = false;
}
} else {
if (minuteNotAlready) {
if (minute > 0) {
minute--;
second = 59;
if (minute == 0 && !hourNotAlready) {
minuteNotAlready = false;
}
} else {
if (hourNotAlready) {
if (hour > 0) {
hour--;
minute = 59;
second = 59;
if (hour == 0 && !dayNotAlready) {
hourNotAlready = false;
}
} else {
if (dayNotAlready) {
day--;
hour = 23;
minute = 59;
second = 59;
if (day == 0) {
dayNotAlready = false;
}
}
}
}
}
}
}
}
System.out.println("距離截止日期還有——>" + day + "天" + hour + "小時(shí)" + minute
+ "分鐘" + second + "秒");
}
} 總結(jié)
以上所述是小編給大家介紹的Java 實(shí)現(xiàn)倒計(jì)時(shí)功能（由秒計(jì)算天、小時(shí)、分鐘、秒），希望對(duì)大家有所幫助，如果大家有任何疑問請(qǐng)給我留言，小編會(huì)及時(shí)回復(fù)大家的。在此也非常感謝大家對(duì)創(chuàng)新互聯(lián)網(wǎng)站的支持！
