Strange Java Timezone Date Conversion Problem

Question

I want to convert ms-since-1970-timestamp to a date with timezone (Germany).

Here are two variants of code which worked - at least, I remember using it

Answer 1

The Answer by Jon Skeet is correct, you used an incorrect time zone name.

java.time

Here is a solution using the modern java.time classes that supplant the old legacy date-time classes that have proven to be so troublesome and confusing.

Instant instant = Instant.ofEpochMilli( milliseconds_since_1970 );  // Or Instant.now() for current moment.
ZoneId z = ZoneId.of( "Europe/Berlin" ); 
ZonedDateTime zdt = instant.atZone( z );

Generate a localized string to represent that date-time value.

Locale l = Locale.GERMANY; // Or Locale.CANADA_FRENCH, etc.
DateTimeFormatter f = DateTimeFormatter.ofLocalizedDateTime( FormatStyle.SHORT ).withLocale( l );
String output = zdt.format( f );

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