LocalTime类的isBefore()方法用于检查此LocalTime时间轴位置是否在作为参数传递的LocalTime之前。如果此LocalTime时间轴位置早于LocalTime作为参数传递，则该方法将返回true或false。比较是基于瞬时的时间线位置。

用法:

public boolean isBefore(LocalTime other)

参数：此方法接受一个参数other，该参数是要比较的另一个LocalTime对象。它不能为空。

返回值：如果此时间在指定时间之前，则此方法返回true，否则返回false。

以下示例程序旨在说明isBefore()方法：

示例1:

// Java program to demonstrate

// LocalTime.isBefore() method

import java.time.*;

public class GFG {

public static void main(String[] args)

{

// create a LocalTime object

LocalTime time1

= LocalTime.parse("19:34:50.63");

// create other LocalTime

LocalTime time2

= LocalTime.parse("23:14:00.63");

// print instances

System.out.println("LocalTime 1: " + time1);

System.out.println("LocalTime 2: " + time2);

// check if LocalTime is before LocalTime

// using isBefore()

boolean value = time1.isBefore(time2);

// print result

System.out.println("Is LocalTime1 before LocalTime2: "

+ value);

}

}

输出：

LocalTime 1: 19:34:50.630

LocalTime 2: 23:14:00.630

Is LocalTime1 before LocalTime2: true

示例2:

// Java program to demonstrate

// LocalTime.isBefore() method

import java.time.*;

public class GFG {

public static void main(String[] args)

{

// create a LocalTime object

LocalTime time1

= LocalTime.parse("23:59:11.98");

// create other LocalTime

LocalTime time2

= LocalTime.parse("10:24:53.21");

// print instances

System.out.println("LocalTime 1: " + time1);

System.out.println("LocalTime 2: " + time2);

// check if LocalTime is before LocalTime

// using isBefore()

boolean value = time1.isBefore(time2);

// print result

System.out.println("Is LocalTime1 before LocalTime2: "

+ value);

}

}

输出：

LocalTime 1: 23:59:11.980

LocalTime 2: 10:24:53.210

Is LocalTime1 before LocalTime2: false