Java 中的等时距()方法，示例
原文:https://www . geesforgeks . org/isochronomics-range-method-in-Java-with-example/
Java . time . chrono . isochronomics 类的 range()方法用于从类型为 ChronoField 的指定字段中获取的范围。
语法:
public ValueRange range(ChronoField field)
参数:该方法以 ChronoField 类型的字段为参数。
返回值:该方法从指定的类型为 chrono 的字段中返回的范围。
以下是说明范围()方法的示例:
例 1:
// Java program to demonstrate
// range() method
import java.util.*;
import java.io.*;
import java.time.*;
import java.time.chrono.*;
import java.time.temporal.*;
public class GFG {
public static void main(String[] argv)
{
try {
// creating and initializing
// LocalDate Object
LocalDate hidate = LocalDate.now();
// getting IsoChronology
// used in LocalDate
IsoChronology crono
= hidate.getChronology();
// getting the ValueRange for
// given ChronoField
// by using range() method
ValueRange range
= crono.range(
ChronoField.ERA);
// display the result
System.out.println(
"Equivalent Range : "
+ range);
}
catch (DateTimeException e) {
System.out.println(
"passed parameter can"
+ " not form a date");
System.out.println(
"Exception thrown: " + e);
}
}
}
输出:
Equivalent Range : 0 - 1
例 2:
// Java program to demonstrate
// range() method
import java.util.*;
import java.io.*;
import java.time.*;
import java.time.chrono.*;
import java.time.temporal.*;
public class GFG {
public static void main(String[] argv)
{
try {
// creating and initializing
// LocalDate Object
LocalDate hidate = LocalDate.now();
// getting IsoChronology
// used in LocalDate
IsoChronology crono
= hidate.getChronology();
// getting the ValueRange for
// given ChronoField
// by using range() method
ValueRange range
= crono.range(
ChronoField.YEAR);
// display the result
System.out.println(
"Equivalent Range : "
+ range);
}
catch (DateTimeException e) {
System.out.println(
"passed parameter can"
+ " not form a date");
System.out.println(
"Exception thrown: " + e);
}
}
}
输出:
Equivalent Range : -999999999 - 999999999
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