Java中的 LocalTime minusHours() 方法及示例
LocalTime类的minusHours()方法用于从此 LocalTime 中减去指定的 Hours 值,并将结果作为 LocalTime 对象返回。这个瞬间是不变的。计算在午夜左右结束。
句法:
public LocalTime minusHours(long hoursToSubtract)
参数:此方法接受单个参数hoursToSubtract ,它是要减去的小时数,它可以是负值。
返回值:此方法返回基于此时间减去小时数的LocalTime 。
下面的程序说明了 minusHours() 方法:
方案一:
// Java program to demonstrate
// LocalTime.minusHours() method
import java.time.*;
public class GFG {
public static void main(String[] args)
{
// create a LocalTime object
LocalTime time
= LocalTime.parse("19:34:50.63");
// print LocalTime
System.out.println("LocalTime before subtraction: "
+ time);
// subtract 3 hours using minusHours()
LocalTime value = time.minusHours(3);
// print result
System.out.println("LocalTime after subtraction: "
+ value);
}
}
输出:
LocalTime before subtraction: 19:34:50.630
LocalTime after subtraction: 16:34:50.630
方案二:
// Java program to demonstrate
// LocalTime.minusHours() method
import java.time.*;
public class GFG {
public static void main(String[] args)
{
// create a LocalTime object
LocalTime time
= LocalTime.parse("01:00:01");
// print LocalTime
System.out.println("LocalTime before subtraction: "
+ time);
// subtract 7 hours using minusHours()
LocalTime value = time.minusHours(7);
// print result
System.out.println("LocalTime after subtraction: "
+ value);
}
}
输出:
LocalTime before subtraction: 01:00:01
LocalTime after subtraction: 18:00:01
参考资料: https: Java/time/LocalTime.html#minusHours(long)