## Integer轉(zhuǎn)換為Date的示例代碼
import java.util.Date;
public class IntegerToDateConverter {
    public static void main(String[] args) {
        Integer timestampInteger = 1614739200000; // 示例的Integer時(shí)間戳，單位為毫秒
        // 將Integer轉(zhuǎn)換為long類型的時(shí)間戳
        long timestamp = timestampInteger.longValue();
        // 創(chuàng)建Date對(duì)象，將時(shí)間戳轉(zhuǎn)為Date對(duì)象
        Date date = new Date(timestamp);
        // 打印轉(zhuǎn)換后的Date對(duì)象
        System.out.println("轉(zhuǎn)換后的Date對(duì)象為：" + date);
    }
}

## 使用LocalDateTime進(jìn)行轉(zhuǎn)換的示例代碼
import java.time.Instant;
import java.time.LocalDateTime;
import java.time.ZoneId;
public class IntegerToLocalDateTimeConverter {
    public static void main(String[] args) {
        Integer timestampInteger = 1614739200000; // 示例的Integer時(shí)間戳，單位為毫秒
        // 將Integer轉(zhuǎn)換為long類型的時(shí)間戳
        long timestamp = timestampInteger.longValue();
        // 使用Instant類將時(shí)間戳轉(zhuǎn)換為L(zhǎng)ocalDateTime類
        LocalDateTime localDateTime = LocalDateTime.ofInstant(Instant.ofEpochMilli(timestamp), ZoneId.systemDefault());
        // 打印轉(zhuǎn)換后的LocalDateTime對(duì)象
        System.out.println("轉(zhuǎn)換后的LocalDateTime對(duì)象為：" + localDateTime);
    }
}

import java.util.Date;
import java.text.SimpleDateFormat;
public class IntegerToDateConverter {
    public static void main(String[] args) {
        // 模擬一個(gè)Integer類型的訂單創(chuàng)建時(shí)間戳
        Integer orderTimestamp = 1646208000000; // 對(duì)應(yīng)2022-03-01 00:00:00
        // 將Integer類型的時(shí)間戳轉(zhuǎn)換為long類型
        long timestamp = orderTimestamp.longValue();
        // 創(chuàng)建Date對(duì)象
        Date date = new Date(timestamp);
        // 創(chuàng)建SimpleDateFormat對(duì)象用于格式化日期輸出
        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        // 格式化輸出日期時(shí)間
        String formattedDate = dateFormat.format(date);
        // 輸出結(jié)果
        System.out.println("訂單創(chuàng)建時(shí)間為：" + formattedDate);
    }
}

import java.util.Date;
import java.text.SimpleDateFormat;
public class DateExample {
    public static void main(String[] args) {
        // 創(chuàng)建當(dāng)前時(shí)間的Date對(duì)象
        Date currentDate = new Date();
        
        // 輸出當(dāng)前時(shí)間的毫秒數(shù)
        System.out.println("當(dāng)前時(shí)間的毫秒數(shù)：" + currentDate.getTime());
        
        // 使用SimpleDateFormat進(jìn)行格式化輸出
        SimpleDateFormat dateFormat = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
        String formattedDate = dateFormat.format(currentDate);
        System.out.println("當(dāng)前時(shí)間的格式化輸出：" + formattedDate);
        
        // 比較日期早晚
        Date futureDate = new Date(currentDate.getTime() + 86400000); // 當(dāng)前時(shí)間的后一天
        System.out.println("未來時(shí)間是否在當(dāng)前時(shí)間之后：" + futureDate.after(currentDate));
    }
}