如何计算两个Java java.sql.Timestamps之间的差异？

要计算两个Java java.sql.Timestamps之间的差异，可以使用以下步骤：

1. 首先，导入必要的Java库：import java.sql.Timestamp; import java.time.Duration; import java.time.Instant;
2. 创建两个 java.sql.Timestamps 对象，表示要比较的时间点。Timestamp timestamp1 = Timestamp.valueOf("2022-01-01 00:00:00"); Timestamp timestamp2 = Timestamp.valueOf("2022-01-02 00:00:00");
3. 将 java.sql.Timestamps 对象转换为 java.time.Instant 对象。Instant instant1 = timestamp1.toInstant(); Instant instant2 = timestamp2.toInstant();
4. 使用 java.time.Duration 类计算两个 java.time.Instant 对象之间的差异。Duration duration = Duration.between(instant1, instant2);
5. 最后，根据需要获取差异的值。例如，要获取两个时间点之间的天数差异，可以使用以下代码：long daysBetween = duration.toDays();

完整的代码示例如下：

import java.sql.Timestamp;
import java.time.Duration;
import java.time.Instant;

public class TimestampDifference {
    public static void main(String[] args) {
        Timestamp timestamp1 = Timestamp.valueOf("2022-01-01 00:00:00");
        Timestamp timestamp2 = Timestamp.valueOf("2022-01-02 00:00:00");

        Instant instant1 = timestamp1.toInstant();
        Instant instant2 = timestamp2.toInstant();

        Duration duration = Duration.between(instant1, instant2);

        long daysBetween = duration.toDays();
        System.out.println("Days between: " + daysBetween);
    }
}

这段代码将计算出两个 java.sql.Timestamps 对象之间的天数差异，并将其输出到控制台。