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Merge pull request #3875 from eugenp/BAEL-1599-v2

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formatting, dst error
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Loredana Crusoveanu 2018-03-24 22:45:40 +02:00 committed by GitHub
commit 8755eb18f7
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2 changed files with 88 additions and 75 deletions
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9
core-java/src/test/java/com/baeldung/dst/DaylightSavingTimeExamplesTest.java
View File

@ -10,12 +10,15 @@ import java.util.Date;
import java.util.Locale;
import java.util.TimeZone;
import org.junit.Ignore;
import org.junit.Test;
public class DaylightSavingTimeExamplesTest {
@Test
public void givenItalianTimeZone_WhenDSTHappens_ThenCorrectlyShiftTimeZone() throws ParseException {
TimeZone.setDefault(TimeZone.getTimeZone("Europe/Rome"));
TimeZone tz = TimeZone.getTimeZone("Europe/Rome");
Calendar cal = Calendar.getInstance(tz, Locale.ITALIAN);
DateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm", Locale.ITALIAN);
@ -24,6 +27,7 @@ public class DaylightSavingTimeExamplesTest {
cal.setTime(dateBeforeDST);
System.out.println("Before DST (00:55 UTC - 01:55 GMT+1) = " + dateBeforeDST);
System.out.println("With this Calendar " + (cal.get(Calendar.ZONE_OFFSET) + cal.get(Calendar.DST_OFFSET)) / (60 * 1000) + " minutes must be added to UTC (GMT TimeZone) to get a correct date for this TimeZone\n");
assertThat(cal.get(Calendar.ZONE_OFFSET)).isEqualTo(3600000);
assertThat(cal.get(Calendar.DST_OFFSET)).isEqualTo(0);
@ -31,6 +35,7 @@ public class DaylightSavingTimeExamplesTest {
cal.add(Calendar.MINUTE, 10);
Date dateAfterDST = cal.getTime();
System.out.println(" After DST (01:05 UTC - 03:05 GMT+2) = " + dateAfterDST);
System.out.println("With this Calendar " + (cal.get(Calendar.ZONE_OFFSET) + cal.get(Calendar.DST_OFFSET)) / (60 * 1000) + " minutes must be added to UTC (GMT TimeZone) to get a correct date for this TimeZone\n");
assertThat(cal.get(Calendar.DST_OFFSET)).isEqualTo(3600000);
@ -42,15 +47,19 @@ public class DaylightSavingTimeExamplesTest {
}
private void prettyPrint(TimeZone tz) {
//@formatter:off
System.out.println(String.format(
" Zone ID = %s (%s)\n"
+ " RawOffset = %s minutes\n"
+ " DST = %s minutes\n"
+ " -----------------------------------------",
tz.getID(), tz.getDisplayName(), tz.getRawOffset()/60000, tz.getDSTSavings()/60000));
//@formatter:on
}
@Test
@Ignore
public void whenIterating_ThenPrintAllTimeZones() {
for (String id : TimeZone.getAvailableIDs()) {
TimeZone tz = TimeZone.getTimeZone(id);

6
core-java/src/test/java/com/baeldung/dst/DaylightSavingTimeJavaTimeExamplesTest.java
View File

@ -35,18 +35,22 @@ public class DaylightSavingTimeJavaTimeExamplesTest {
}
private void prettyPrint(ZonedDateTime zdt) {
//@formatter:off
System.out.println(String.format(
" ZonedDateTime = %s\n"
+ " Zone ID = %s (%s)\n"
+ " RawOffset = %s minutes\n"
+ " -----------------------------------------",
zdt, zdt.getZone(), zdt.getZone().getId(), zdt.getOffset().getTotalSeconds()/60));
//@formatter:on
}
@Test
public void whenCounting_ThenPrintDifferencesBetweenAPIs() {
System.out.println("Total java.time.ZoneId count : " + ZoneId.getAvailableZoneIds().size());
System.out.println("Total java.time.ZoneId count : " + ZoneId.getAvailableZoneIds()
.size());
System.out.println("Total java.util.TimeZone Id count : " + TimeZone.getAvailableIDs().length);
}
}