Java DateFormatSymbols.getZoneStrings方法代码示例

import java.text.DateFormatSymbols; //导入方法依赖的package包/类
@Test
public void getZoneStringsTest() {

    DateFormatSymbols dfs = new DateFormatSymbols();
    String[][] result = dfs.getZoneStrings();
    for (int i = 0; i < 10; i++) {
        if (!Arrays.deepEquals(result, dfs.getZoneStrings())) {
            return;
        }
    }
    fail("getZoneStrings did not extend in 10 tries; something is likely fishy.");
}
 

import java.text.DateFormatSymbols; //导入方法依赖的package包/类
public static void main(String[] args) throws Exception
{
    DateFormatSymbols symbols = new DateFormatSymbols(Locale.JAPAN);
    String[] eras = symbols.getEras();
    System.out.println("BC = " + eras[0]);
    if (!eras[0].equals(bc)) {
        System.out.println("*** Should have been " + bc);
        throw new Exception("Error in BC");
    }
    System.out.println("AD = " + eras[1]);
    if (!eras[1].equals(ad)) {
        System.out.println("*** Should have been " + ad);
        throw new Exception("Error in AD");
    }
    String[][] zones = symbols.getZoneStrings();
    for (int i = 0; i < zones.length; i++) {
        if (!"Asia/Tokyo".equals(zones[i][0])) {
            continue;
        }
        System.out.println("Long zone name = " + zones[i][1]);
        if (!zones[i][1].equals(jstLong)) {
            System.out.println("*** Should have been " + jstLong);
            throw new Exception("Error in long TZ name");
        }
        System.out.println("Short zone name = " + zones[i][2]);
        if (!zones[i][2].equals(jstShort)) {
            System.out.println("*** Should have been " + jstShort);
            throw new Exception("Error in short TZ name");
        }
        System.out.println("Long zone name = " + zones[i][3]);
        if (!zones[i][3].equals(jdtLong)) {
            System.out.println("*** Should have been " + jdtLong);
            throw new Exception("Error in long TZ name");
        }
        System.out.println("SHORT zone name = " + zones[i][4]);
        if (!zones[i][4].equals(jdtShort)) {
            System.out.println("*** Should have been " + jdtShort);
            throw new Exception("Error in short TZ name");
        }
    }
}
 

import java.text.DateFormatSymbols; //导入方法依赖的package包/类
/**
 * Returns a localised textual representation of the current value
 * of the given field using the specified style.  If there is no
 * applicable textual representation (e.g. the field has a numeric
 * value), then <code>null</code> is returned.  If one does exist,
 * then the value is obtained from {@link #get(int)} and converted
 * appropriately.  For example, if the <code>MONTH</code> field is
 * requested, then <code>get(MONTH)</code> is called.  This is then
 * converted to a textual representation based on its value and
 * the style requested; if the <code>LONG</code> style is requested
 * and the returned value is <code>11</code> from a
 * {@link GregorianCalendar} implementation, then <code>"December"</code>
 * is returned.  By default, a textual representation is available
 * for all fields which have an applicable value obtainable from
 * {@link java.text.DateFormatSymbols}.
 *
 * @param field the calendar field whose textual representation should
 *              be obtained.
 * @param style the style to use; either {@link #LONG} or {@link #SHORT}.
 * @param locale the locale to use for translation.
 * @return the textual representation of the given field in the specified
 *         style, or <code>null</code> if none is applicable.
 * @throws IllegalArgumentException if <code>field</code> or <code>style</code>
 *                                  or invalid, or the calendar is non-lenient
 *                                  and has invalid values.
 * @throws NullPointerException if <code>locale</code> is <code>null</code>.
 * @since 1.6
 */
public String getDisplayName(int field, int style, Locale locale)
{
  if (field < 0 || field >= FIELD_COUNT)
    throw new IllegalArgumentException("The field value, " + field +
                                       ", is invalid.");
  if (style != SHORT && style != LONG)
    throw new IllegalArgumentException("The style must be either " +
                                       "short or long.");
  if (field == YEAR || field == WEEK_OF_YEAR ||
      field == WEEK_OF_MONTH || field == DAY_OF_MONTH ||
      field == DAY_OF_YEAR || field == DAY_OF_WEEK_IN_MONTH ||
      field == HOUR || field == HOUR_OF_DAY || field == MINUTE ||
      field == SECOND || field == MILLISECOND)
    return null;

  int value = get(field);
  DateFormatSymbols syms = DateFormatSymbols.getInstance(locale);
  if (field == ERA)
    return syms.getEras()[value];
  if (field == MONTH)
    if (style == LONG)
      return syms.getMonths()[value];
    else
      return syms.getShortMonths()[value];
  if (field == DAY_OF_WEEK)
    if (style == LONG)
      return syms.getWeekdays()[value];
    else
      return syms.getShortWeekdays()[value];
  if (field == AM_PM)
    return syms.getAmPmStrings()[value];
  if (field == ZONE_OFFSET)
    if (style == LONG)
      return syms.getZoneStrings()[value][1];
    else
      return syms.getZoneStrings()[value][2];
  if (field == DST_OFFSET)
    if (style == LONG)
      return syms.getZoneStrings()[value][3];
    else
      return syms.getZoneStrings()[value][4];

  throw new InternalError("Failed to resolve field " + field +
                          " with style " + style + " for locale " +
                          locale);
}