java.time.ZoneId.getAvailableZoneIds()方法的使用及代码示例

x33g5p2x  于2022-02-05 转载在 其他  
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本文整理了Java中java.time.ZoneId.getAvailableZoneIds()方法的一些代码示例，展示了ZoneId.getAvailableZoneIds()的具体用法。这些代码示例主要来源于Github/Stackoverflow/Maven等平台，是从一些精选项目中提取出来的代码，具有较强的参考意义，能在一定程度帮忙到你。ZoneId.getAvailableZoneIds()方法的具体详情如下：
包路径：java.time.ZoneId
类名称：ZoneId
方法名：getAvailableZoneIds

ZoneId.getAvailableZoneIds介绍

[英]Gets the set of available zone IDs.

This set includes the string form of all available region-based IDs. Offset-based zone IDs are not included in the returned set. The ID can be passed to #of(String) to create a ZoneId.

The set of zone IDs can increase over time, although in a typical application the set of IDs is fixed. Each call to this method is thread-safe.
[中]获取可用区域ID的集合。
该集合包括所有可用的基于区域的ID的字符串形式。返回的集合中不包括基于偏移量的区域ID。可以将ID传递给#of（String）以创建ZoneId。
区域ID集可能会随着时间的推移而增加，尽管在典型应用中，ID集是固定的。对该方法的每次调用都是线程安全的。

代码示例

代码示例来源：origin: neo4j/neo4j

@Test
void weSupportAllJavaZoneIds()
{
  ZoneId.getAvailableZoneIds().forEach( s ->
  {
    short num = TimeZones.map( s );
    assertThat( "Our time zone table does not have a mapping for " + s, num, greaterThanOrEqualTo( (short) 0 ) );
    String nameFromTable = TimeZones.map( num );
    if ( !s.equals( nameFromTable ) )
    {
      // The test is running on an older Java version and `s` has been removed since, thus it points to a different zone now.
      // That zone should point to itself, however.
      assertThat( "Our time zone table has inconsistent mapping for " + nameFromTable,
          TimeZones.map( TimeZones.map( nameFromTable ) ), equalTo( nameFromTable ) );
    }
  } );
}

代码示例来源：origin: prestodb/presto

TreeSet<String> jdkZones = new TreeSet<>(ZoneId.getAvailableZoneIds());

代码示例来源：origin: biezhi/learn-java8

public static void main(String[] args) {

    // 获取系统默认时区
    ZoneId defaultZoneId  = ZoneId.systemDefault();
    ZoneId shanghaiZoneId = ZoneId.of("Asia/Shanghai");

    // TimeZone 转换为 ZoneId
    ZoneId oldToNewZoneId = TimeZone.getDefault().toZoneId();

    System.out.println(defaultZoneId);
    System.out.println(shanghaiZoneId);
    System.out.println(oldToNewZoneId);

    System.out.println(ZoneId.getAvailableZoneIds());
  }
}

代码示例来源：origin: pholser/junit-quickcheck

@Override public ZoneId generate(SourceOfRandomness random, GenerationStatus status) {
    return ZoneId.of(random.choose(getAvailableZoneIds()));
  }
}

代码示例来源：origin: apache/metron

private DateTimeFormatter getDateFormatterWithZone(DateTimeFormatter formatter, Map<String, Object> parserConfig) {
 String timezone = (String) parserConfig.get("timeZone");
 if (StringUtils.isNotEmpty(timezone)) {
  if(ZoneId.getAvailableZoneIds().contains(timezone)) {
   _LOG.info("Using timezone '{}'", timezone);
   return formatter.withZone(ZoneId.of(timezone));
  } else {
   throw new IllegalArgumentException("Unable to find ZoneId '" + timezone + "'");
  }
 } else {
  _LOG.info("Using default timezone '{}'", ZoneId.systemDefault());
  return formatter.withZone(ZoneId.systemDefault());
 }
}

代码示例来源：origin: stackoverflow.com

import java.time.ZoneId;
import java.time.ZoneOffset;
import java.time.ZonedDateTime;
import java.time.format.TextStyle;
import java.util.Locale;
import java.util.Set;

Set<String> zoneIds = ZoneId.getAvailableZoneIds();

for (String zoneId : zoneIds) {
  ZoneId zone = ZoneId.of(zoneId);
  ZonedDateTime zonedDateTime = ZonedDateTime.now(zone);

  ZoneOffset offset = zonedDateTime.getOffset();
  String longName = zone.getDisplayName(TextStyle.FULL, Locale.ENGLISH);

  System.out.println("(" + offset + ") " + zoneId + ", " + longName);
}

代码示例来源：origin: kousen/java_8_recipes

public static void main(String[] args) {
    System.out.println(ZoneId.getAvailableZoneIds().size());
    ZoneId.getAvailableZoneIds()
       .forEach(System.out::println);
  }
}

代码示例来源：origin: kiegroup/optaweb-employee-rostering

@Override
  public List<ZoneId> getSupportedTimezones() {
    return ZoneId.getAvailableZoneIds().stream()
        .sorted().map(zoneId -> ZoneId.of(zoneId))
        .collect(Collectors.toList());
  }
}

代码示例来源：origin: eclipse/hawkbit

/**
 * Get list of all time zone offsets supported.
 */
private static List<String> getAllTimeZones() {
  final List<String> lst = ZoneId.getAvailableZoneIds().stream()
      .map(id -> ZonedDateTime.now(ZoneId.of(id)).getOffset().getId().replace("Z", "+00:00")).distinct()
      .collect(Collectors.toList());
  lst.sort(null);
  return lst;
}

代码示例来源：origin: com.pholser/junit-quickcheck-generators

@Override public ZoneId generate(SourceOfRandomness random, GenerationStatus status) {
    return ZoneId.of(random.choose(getAvailableZoneIds()));
  }
}

代码示例来源：origin: org.eclipse.hawkbit/hawkbit-ui

/**
 * Get list of all time zone offsets supported.
 */
private static List<String> getAllTimeZones() {
  final List<String> lst = ZoneId.getAvailableZoneIds().stream()
      .map(id -> ZonedDateTime.now(ZoneId.of(id)).getOffset().getId().replace("Z", "+00:00")).distinct()
      .collect(Collectors.toList());
  lst.sort(null);
  return lst;
}

代码示例来源：origin: kousen/java_8_recipes

public static List<String> getRegionNamesForOffset(ZoneOffset offset) {
  LocalDateTime now = LocalDateTime.now();
  return ZoneId.getAvailableZoneIds().stream()
      .map(ZoneId::of)
      .filter(zoneId -> now.atZone(zoneId).getOffset().equals(offset))
      .map(ZoneId::toString)
      .sorted()
      .collect(Collectors.toList());
}

代码示例来源：origin: mohamed-taman/JavaSE8-Features

public static void main(String[] args) {

    DateTimeFormatter dtf = DateTimeFormatter.ofLocalizedDateTime(FormatStyle.SHORT);
    LocalDateTime currentDT = LocalDateTime.now();
    System.out.println(dtf.format(currentDT));
    
    ZonedDateTime gmt = ZonedDateTime.now(ZoneId.of("GMT+0"));
    System.out.println(dtf.format(gmt));
    
    ZonedDateTime ny = ZonedDateTime.now(ZoneId.of("America/New_York"));
    System.out.println(dtf.format(ny));
    
    Set<String> zones = ZoneId.getAvailableZoneIds();
    Predicate<String> condition = str -> str.contains("London");
    zones.forEach(z -> {
      if(condition.test(z))
      System.out.println(z);
    });

  }
}

代码示例来源：origin: alblue/com.packtpub.e4

public static Map<String, Set<ZoneId>> getTimeZones() {
    Supplier<Set<ZoneId>> sortedZones = () -> new TreeSet<>(new TimeZoneComparator());
    return ZoneId.getAvailableZoneIds().stream() // stream
        .filter(s -> s.contains("/")) // with / in them
        .map(ZoneId::of) // convert to ZoneId
        .collect(Collectors.groupingBy( // and group by
            z -> z.getId().split("/")[0], // first part
            TreeMap::new, Collectors.toCollection(sortedZones)));
  }
}

代码示例来源：origin: qala-io/datagen

public ZonedDateTime zonedDateTime() {
  return ZonedDateTime.ofInstant(instant(), ZoneId.of(sample(ZoneId.getAvailableZoneIds())));
}
public List<ZonedDateTime> zonedDateTimes(int nOfTimes) {

代码示例来源：origin: zavtech/morpheus-core

/**
 * Constructor
 */
OfZoneId() {
  super(ZoneId.class);
  this.zoneIds = ZoneId.getAvailableZoneIds().stream().map(ZoneId::of).toArray(ZoneId[]::new);
  this.codeMap = new TObjectIntHashMap<>(zoneIds.length, 0.5f, -1);
  Arrays.sort(zoneIds, (z1, z2) -> z1.getId().compareTo(z2.getId()));
  for (int i=0; i<zoneIds.length; ++i) {
    this.codeMap.put(zoneIds[i], i);
  }
}

代码示例来源：origin: kousen/java_8_recipes

public static void main(String[] args) {
    LocalDateTime now = LocalDateTime.now();
    List<ZonedDateTime> antarticZones =
        ZoneId.getAvailableZoneIds().stream()  // Stream<String>
            .filter(regionId -> regionId.contains("Antarctica"))
            .map(ZoneId::of)  // Stream<ZoneId>
            .map(now::atZone) // Stream<ZonedDateTime>
            .sorted(comparingInt(zoneId -> zoneId.getOffset().getTotalSeconds()))
            .collect(Collectors.toList());

    antarticZones.forEach(zdt ->
        System.out.printf("%7s: %25s %7s%n", zdt.getOffset(), zdt.getZone(),
            zdt.getZone().getRules().isDaylightSavings(zdt.toInstant())));
  }
}

代码示例来源：origin: com.namics.oss/java-random

@Override
public ZonedDateTime random() {
  ZonedDateTime now = ZonedDateTime.now().withZoneSameInstant(ZoneId.of(RandomData.random(ZoneId.getAvailableZoneIds())));
  int year = 60 * 60 * 24 * 365;
  return now.plusSeconds((long) RandomData.randomInteger(-2 * year, 2 * year));// +- 2 years;
}

代码示例来源：origin: arnaudroger/SimpleFlatMapper

private void test501(JdbcMapperBuilder<C501> builder) throws SQLException {
  
  try {
    builder.addMapping("zone_id", 1, Types.VARCHAR);
    JdbcMapper<C501> mapper = builder.mapper();
    String zoneId = ZoneId.getAvailableZoneIds().iterator().next();
    ResultSet rs = mock(ResultSet.class);
    when(rs.next()).thenReturn(true, false);
    when(rs.getString(1)).thenReturn(zoneId);
    List<C501> l = mapper.forEach(rs, new ListCollector<C501>()).getList();
    assertEquals(1, l.size());
    assertEquals(ZoneId.of(zoneId), l.get(0).zoneId);
  } catch (Throwable e) {
    System.out.println("XXXXXX = " + e);
    e.printStackTrace(System.out);
    throw e;
  }
}

代码示例来源：origin: alblue/com.packtpub.e4

protected void createFieldEditors() {
  addField(new IntegerFieldEditor("launchCount", "Number of times it has been launched", getFieldEditorParent()));
  IntegerFieldEditor offset = new IntegerFieldEditor("offset", "Current offset from GMT", getFieldEditorParent());
  offset.setValidRange(-14, +12);
  addField(offset);
  String[][] data = ZoneId.getAvailableZoneIds()//
      .stream().sorted().map(s -> new String[] { s, s }) //
      .collect(Collectors.toList()).toArray(new String[][] {});
  addField(new ComboFieldEditor("favorite", "Favorite time zone", data, getFieldEditorParent()));
  addField(new BooleanFieldEditor("tick", "Boolean value", getFieldEditorParent()));
  addField(new ColorFieldEditor("colour", "Favourite colour", getFieldEditorParent()));
  addField(new ScaleFieldEditor("scale", "Scale", getFieldEditorParent(), 0, 360, 10, 90));
  addField(new FileFieldEditor("file", "Pick a file", getFieldEditorParent()));
  addField(new DirectoryFieldEditor("dir", "Pick a directory", getFieldEditorParent()));
  addField(new PathEditor("path", "Path", "Directory", getFieldEditorParent()));
  addField(new RadioGroupFieldEditor("group", "Radio choices", 3, data, getFieldEditorParent(), true));
}

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