Java 各種時間上的操作範例
分享一些在專案中用到JAVA與日期相關的操作，包括：
- 取得目前的年、月、日
- 判斷兩個日期的大小
- 計算兩個日期的差距
- 取得昨天的日期
- 取得上個月的開始與結束日
package CDIT.stanley;
import java.text.ParseException;
import java.text.SimpleDateFormat;
import java.util.Date;
import java.util.Locale;
import java.util.Calendar;
public class dateOperation {
public static int differentDays(Date date1,Date date2){
Calendar cal1 = Calendar.getInstance();
cal1.setTime(date1);
Calendar cal2 = Calendar.getInstance();
cal2.setTime(date2);
int day1= cal1.get(Calendar.DAY_OF_YEAR);
int day2 = cal2.get(Calendar.DAY_OF_YEAR);
int year1 = cal1.get(Calendar.YEAR);
int year2 = cal2.get(Calendar.YEAR);
if(year1 != year2){
int timeDistance = 0 ;
for(int i = year1 ; i < year2 ; i ++){
if(i%4==0 && i%100!=0 || i%400==0){
timeDistance += 366;
}
else{
timeDistance += 365;
}
}
return timeDistance + (day2-day1) ;
}
else{
return day2-day1;
}
}
public static Date getFirstMonthDay(Calendar calendar) {
calendar.set(Calendar.DATE, calendar.getActualMinimum(Calendar.DATE));
return calendar.getTime();
}
public static Date getLastMonthDay(Calendar calendar) {
calendar.set(Calendar.DATE, calendar.getActualMaximum(Calendar.DATE));
return calendar.getTime();
}
public static void main(String[] args) throws ParseException {
//取得目前的年、月、日
Calendar calendar = Calendar.getInstance();
System.out.println("今天是" + calendar.get(Calendar.YEAR) + "年" + (calendar.get(Calendar.MONTH) + 1) + "月" + calendar.get(Calendar.DAY_OF_MONTH) + "日");
System.out.println("==================================================");
//輸出：今天是2017年8月24日
//判斷兩個日期的大小
SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd", Locale.TAIWAN);
Date date1 = sdf.parse("2017-08-23");
Date date2 = sdf.parse("2016-09-22");
System.out.println("Date1 < Date2 : " + date1.before(date2));
System.out.println("Date1 > Date2 : " + date1.after(date2));
System.out.println("==================================================");
//輸出：Date1 < Date2 : false、Date1 > Date2 : true
//計算兩個日期的差距
System.out.println("Date1 & Date2 差距 : " + differentDays(date1 , date2) + "天");
System.out.println("==================================================");
//輸出：Date1 & Date2 差距 : 31天
//取得昨天的日期
calendar = Calendar.getInstance();
calendar.add(Calendar.DATE, -1);
String yestedayDate = sdf.format(calendar.getTime());
System.out.println("昨天是" + yestedayDate);
System.out.println("==================================================");
//輸出：昨天是2017-08-23
//取得上個月的開始與結束日
calendar = Calendar.getInstance();
calendar.add(Calendar.MONTH,-1);
String monthDayFirst = sdf.format(getFirstMonthDay(calendar));
String monthDayLast = sdf.format(getLastMonthDay(calendar));
System.out.println("上個月的第一天是" + monthDayFirst);
System.out.println("上個月的最後一天是" + monthDayLast);
System.out.println("==================================================");
//輸出：上個月的第一天是2017-07-01、上個月的最後一天是2017-07-31
}
}
Look of the Week: Kendrick Lamar’s Super Bowl pants signal the return of flares
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This year’s Super Bowl halftime show was hardly a fashion extravaganza, with headliner Kendrick Lamar keeping things simple in a backwards cap and motorbike-style varsity jacket, which he kept on throughout.
And without the costume-change roulette we’ve come to expect of halftime shows, the internet fixated on one item in particular: his jeans.
While not quite the bell-bottoms of decades past (the 1970s and the 2000s, specifically), the Compton-born rapper’s washed denim pants flared out at the knee and dragged beneath his heels along the stage at Caesars Superdrome in New Orleans. His silhouette stood in stark contrast to that of record producer Mustard, who made a brief cameo in a pair of outsized jeans straight from the West Coast hip-hop playbook.
Opinions were, as ever, divided on social media. Some users described Lamar’s flares as “women’s jeans” and “Hannah Montana pants,” earning him comparisons to everyone from Jennifer Aniston to country singer Lainey Wilson. Others joked that their moms were looking for a similar pair or that they nodded to millennials, for whom flares were a teenage staple.
But those suggesting his style was outdated, or gender-inappropriate, may not have been paying attention to the recent resurgence of flares — in both womenswear and menswear. After all, Lamar’s jeans were designed by one of the most influential figures in modern fashion, Celine’s former creative director Hedi Slimane, before he departed the French label in October.
Cute baby animals bring visitors to zoos and aquariums. What happens when they grow up?
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One of the best things that can happen to a zoo or aquarium is for one of their resident animals to go viral.
Just look at the multi-hour-long lines to see Moo Deng, a pygmy hippo in Thailand who has become an internet sensation following her July 2024 birth. The sassy animal is now a full-on brand, with Khao Kheow Open Zoo selling Moo Deng merchandise and even releasing a single “by” the hippo in multiple languages.
Meanwhile, Pesto — a baby king penguin who was eating more fish than his parents by the time he was a few weeks old — is also an online celebrity, with human stars like Olivia Rodrigo and Katy Perry stopping by to meet him.
But what happens when these cute animals become, well, less cute? The Sea Life Melbourne aquarium has already been planning for the next phase of Pesto’s life — and answering questions from the public about his changing appearance.
It’s normal for king penguins to lose their feathers by the time they’re about a year old and become confident swimmers. As a result, a spokesperson for the aquarium says, guests have started asking why Pesto looks different — or why they can’t find him at all.
“We are getting a few guests thinking we have moved him off display completely,” says the spokesperson. “Most of the team’s time is spent pointing him out to guests because he looks so different now.”
The bottom line is that cute baby animals make money.
Admission tickets are only the beginning. Many zoos and aquariums offer special “behind the scenes” or “zookeeper for a day” packages at much higher prices. At Sea Life Melbourne, standard entry tickets for adults start at $51, while the Penguin Passport — which include a 45-minute tour of the birds’ area and a look at how their food is prepared — is $199.
The real jackpot, though, is merchandise. Stuffed animals, T-shirts, fridge magnets, keychains, kids’ books and other branded products are a major way for zoos and aquariums to make money.
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Scores of unexploded World War II bombs discovered under children’s playground
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Scores of unexploded bombs dating from World War II have been recovered from a children’s playground in northern England after a chance discovery.
Local officials in the town of Wooler, Northumberland called in bomb disposal experts after workers involved in a planned overhaul of Scotts Play Park found unexploded ordnance, the parish council said in a statement sent to CNN on Monday.
Two bombs were initially removed by the British Army, the UK Ministry of Defense said in a statement. The parish council was then advised that a full survey of the area was required, according to a council spokesperson.
Bomb disposal company Brimstone Site Investigation then uncovered 65 10-pound practice bombs and smoke cartridges on the first day of works, with a further 90 practice bombs recovered on the second day.
The company told CNN that the bombs date from World War II.
According to the parish council, all of the bombs need to be found and removed before the park can be reopened. It said 174 devices had been found so far.
Cute baby animals bring visitors to zoos and aquariums. What happens when they grow up?
арбитраж трафика тимы
One of the best things that can happen to a zoo or aquarium is for one of their resident animals to go viral.
Just look at the multi-hour-long lines to see Moo Deng, a pygmy hippo in Thailand who has become an internet sensation following her July 2024 birth. The sassy animal is now a full-on brand, with Khao Kheow Open Zoo selling Moo Deng merchandise and even releasing a single “by” the hippo in multiple languages.
Meanwhile, Pesto — a baby king penguin who was eating more fish than his parents by the time he was a few weeks old — is also an online celebrity, with human stars like Olivia Rodrigo and Katy Perry stopping by to meet him.
But what happens when these cute animals become, well, less cute? The Sea Life Melbourne aquarium has already been planning for the next phase of Pesto’s life — and answering questions from the public about his changing appearance.
It’s normal for king penguins to lose their feathers by the time they’re about a year old and become confident swimmers. As a result, a spokesperson for the aquarium says, guests have started asking why Pesto looks different — or why they can’t find him at all.
“We are getting a few guests thinking we have moved him off display completely,” says the spokesperson. “Most of the team’s time is spent pointing him out to guests because he looks so different now.”
The bottom line is that cute baby animals make money.
Admission tickets are only the beginning. Many zoos and aquariums offer special “behind the scenes” or “zookeeper for a day” packages at much higher prices. At Sea Life Melbourne, standard entry tickets for adults start at $51, while the Penguin Passport — which include a 45-minute tour of the birds’ area and a look at how their food is prepared — is $199.
The real jackpot, though, is merchandise. Stuffed animals, T-shirts, fridge magnets, keychains, kids’ books and other branded products are a major way for zoos and aquariums to make money.
Look of the Week: Kendrick Lamar’s Super Bowl pants signal the return of flares
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This year’s Super Bowl halftime show was hardly a fashion extravaganza, with headliner Kendrick Lamar keeping things simple in a backwards cap and motorbike-style varsity jacket, which he kept on throughout.
And without the costume-change roulette we’ve come to expect of halftime shows, the internet fixated on one item in particular: his jeans.
While not quite the bell-bottoms of decades past (the 1970s and the 2000s, specifically), the Compton-born rapper’s washed denim pants flared out at the knee and dragged beneath his heels along the stage at Caesars Superdrome in New Orleans. His silhouette stood in stark contrast to that of record producer Mustard, who made a brief cameo in a pair of outsized jeans straight from the West Coast hip-hop playbook.
Opinions were, as ever, divided on social media. Some users described Lamar’s flares as “women’s jeans” and “Hannah Montana pants,” earning him comparisons to everyone from Jennifer Aniston to country singer Lainey Wilson. Others joked that their moms were looking for a similar pair or that they nodded to millennials, for whom flares were a teenage staple.
But those suggesting his style was outdated, or gender-inappropriate, may not have been paying attention to the recent resurgence of flares — in both womenswear and menswear. After all, Lamar’s jeans were designed by one of the most influential figures in modern fashion, Celine’s former creative director Hedi Slimane, before he departed the French label in October.
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Look of the Week: Kendrick Lamar’s Super Bowl pants signal the return of flares
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This year’s Super Bowl halftime show was hardly a fashion extravaganza, with headliner Kendrick Lamar keeping things simple in a backwards cap and motorbike-style varsity jacket, which he kept on throughout.
And without the costume-change roulette we’ve come to expect of halftime shows, the internet fixated on one item in particular: his jeans.
While not quite the bell-bottoms of decades past (the 1970s and the 2000s, specifically), the Compton-born rapper’s washed denim pants flared out at the knee and dragged beneath his heels along the stage at Caesars Superdrome in New Orleans. His silhouette stood in stark contrast to that of record producer Mustard, who made a brief cameo in a pair of outsized jeans straight from the West Coast hip-hop playbook.
Opinions were, as ever, divided on social media. Some users described Lamar’s flares as “women’s jeans” and “Hannah Montana pants,” earning him comparisons to everyone from Jennifer Aniston to country singer Lainey Wilson. Others joked that their moms were looking for a similar pair or that they nodded to millennials, for whom flares were a teenage staple.
But those suggesting his style was outdated, or gender-inappropriate, may not have been paying attention to the recent resurgence of flares — in both womenswear and menswear. After all, Lamar’s jeans were designed by one of the most influential figures in modern fashion, Celine’s former creative director Hedi Slimane, before he departed the French label in October.
Scores of unexploded World War II bombs discovered under children’s playground
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Scores of unexploded bombs dating from World War II have been recovered from a children’s playground in northern England after a chance discovery.
Local officials in the town of Wooler, Northumberland called in bomb disposal experts after workers involved in a planned overhaul of Scotts Play Park found unexploded ordnance, the parish council said in a statement sent to CNN on Monday.
Two bombs were initially removed by the British Army, the UK Ministry of Defense said in a statement. The parish council was then advised that a full survey of the area was required, according to a council spokesperson.
Bomb disposal company Brimstone Site Investigation then uncovered 65 10-pound practice bombs and smoke cartridges on the first day of works, with a further 90 practice bombs recovered on the second day.
The company told CNN that the bombs date from World War II.
According to the parish council, all of the bombs need to be found and removed before the park can be reopened. It said 174 devices had been found so far.
Cute baby animals bring visitors to zoos and aquariums. What happens when they grow up?
арбитраж
One of the best things that can happen to a zoo or aquarium is for one of their resident animals to go viral.
Just look at the multi-hour-long lines to see Moo Deng, a pygmy hippo in Thailand who has become an internet sensation following her July 2024 birth. The sassy animal is now a full-on brand, with Khao Kheow Open Zoo selling Moo Deng merchandise and even releasing a single “by” the hippo in multiple languages.
Meanwhile, Pesto — a baby king penguin who was eating more fish than his parents by the time he was a few weeks old — is also an online celebrity, with human stars like Olivia Rodrigo and Katy Perry stopping by to meet him.
But what happens when these cute animals become, well, less cute? The Sea Life Melbourne aquarium has already been planning for the next phase of Pesto’s life — and answering questions from the public about his changing appearance.
It’s normal for king penguins to lose their feathers by the time they’re about a year old and become confident swimmers. As a result, a spokesperson for the aquarium says, guests have started asking why Pesto looks different — or why they can’t find him at all.
“We are getting a few guests thinking we have moved him off display completely,” says the spokesperson. “Most of the team’s time is spent pointing him out to guests because he looks so different now.”
The bottom line is that cute baby animals make money.
Admission tickets are only the beginning. Many zoos and aquariums offer special “behind the scenes” or “zookeeper for a day” packages at much higher prices. At Sea Life Melbourne, standard entry tickets for adults start at $51, while the Penguin Passport — which include a 45-minute tour of the birds’ area and a look at how their food is prepared — is $199.
The real jackpot, though, is merchandise. Stuffed animals, T-shirts, fridge magnets, keychains, kids’ books and other branded products are a major way for zoos and aquariums to make money.
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Cute baby animals bring visitors to zoos and aquariums. What happens when they grow up?
арбитраж
One of the best things that can happen to a zoo or aquarium is for one of their resident animals to go viral.
Just look at the multi-hour-long lines to see Moo Deng, a pygmy hippo in Thailand who has become an internet sensation following her July 2024 birth. The sassy animal is now a full-on brand, with Khao Kheow Open Zoo selling Moo Deng merchandise and even releasing a single “by” the hippo in multiple languages.
Meanwhile, Pesto — a baby king penguin who was eating more fish than his parents by the time he was a few weeks old — is also an online celebrity, with human stars like Olivia Rodrigo and Katy Perry stopping by to meet him.
But what happens when these cute animals become, well, less cute? The Sea Life Melbourne aquarium has already been planning for the next phase of Pesto’s life — and answering questions from the public about his changing appearance.
It’s normal for king penguins to lose their feathers by the time they’re about a year old and become confident swimmers. As a result, a spokesperson for the aquarium says, guests have started asking why Pesto looks different — or why they can’t find him at all.
“We are getting a few guests thinking we have moved him off display completely,” says the spokesperson. “Most of the team’s time is spent pointing him out to guests because he looks so different now.”
The bottom line is that cute baby animals make money.
Admission tickets are only the beginning. Many zoos and aquariums offer special “behind the scenes” or “zookeeper for a day” packages at much higher prices. At Sea Life Melbourne, standard entry tickets for adults start at $51, while the Penguin Passport — which include a 45-minute tour of the birds’ area and a look at how their food is prepared — is $199.
The real jackpot, though, is merchandise. Stuffed animals, T-shirts, fridge magnets, keychains, kids’ books and other branded products are a major way for zoos and aquariums to make money.
Look of the Week: Kendrick Lamar’s Super Bowl pants signal the return of flares
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This year’s Super Bowl halftime show was hardly a fashion extravaganza, with headliner Kendrick Lamar keeping things simple in a backwards cap and motorbike-style varsity jacket, which he kept on throughout.
And without the costume-change roulette we’ve come to expect of halftime shows, the internet fixated on one item in particular: his jeans.
While not quite the bell-bottoms of decades past (the 1970s and the 2000s, specifically), the Compton-born rapper’s washed denim pants flared out at the knee and dragged beneath his heels along the stage at Caesars Superdrome in New Orleans. His silhouette stood in stark contrast to that of record producer Mustard, who made a brief cameo in a pair of outsized jeans straight from the West Coast hip-hop playbook.
Opinions were, as ever, divided on social media. Some users described Lamar’s flares as “women’s jeans” and “Hannah Montana pants,” earning him comparisons to everyone from Jennifer Aniston to country singer Lainey Wilson. Others joked that their moms were looking for a similar pair or that they nodded to millennials, for whom flares were a teenage staple.
But those suggesting his style was outdated, or gender-inappropriate, may not have been paying attention to the recent resurgence of flares — in both womenswear and menswear. After all, Lamar’s jeans were designed by one of the most influential figures in modern fashion, Celine’s former creative director Hedi Slimane, before he departed the French label in October.
Scores of unexploded World War II bombs discovered under children’s playground
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Scores of unexploded bombs dating from World War II have been recovered from a children’s playground in northern England after a chance discovery.
Local officials in the town of Wooler, Northumberland called in bomb disposal experts after workers involved in a planned overhaul of Scotts Play Park found unexploded ordnance, the parish council said in a statement sent to CNN on Monday.
Two bombs were initially removed by the British Army, the UK Ministry of Defense said in a statement. The parish council was then advised that a full survey of the area was required, according to a council spokesperson.
Bomb disposal company Brimstone Site Investigation then uncovered 65 10-pound practice bombs and smoke cartridges on the first day of works, with a further 90 practice bombs recovered on the second day.
The company told CNN that the bombs date from World War II.
According to the parish council, all of the bombs need to be found and removed before the park can be reopened. It said 174 devices had been found so far.
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