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Do all the standard objects use the same default timezone?

April 26, 2017Default objects standard timezone

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Do all the standard objects use the same default timezone?

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[*] Not until JDK 1.2. In JDK 1.1, Date.toString() and Calendar used the value of TimeZone.getDefault() which could often be undefined (see the previous question). In JDK 1.1, The Calendar in a SimpleDateFormat was set to the 1st timezone resource for the locale (for the US this is PST). System.out.println( “Date format TZ = ” + TimeZone.getDefault().getID() ); sdf = DateFormat.getDateTimeInstance( DateFormat.LONG, DateFormat.LONG ); System.out.println( “Date format TZ = ” + sdf.getTimeZone().getID() ); Calendar cal = Calendar.getInstance(); System.out.println( “Calendar TZ = ” + cal.getTimeZone().getID() ); When run on a system running JDK 1.1.6, NOT in the North American Pacific Time nor in the GMT timezone results in: Timezone default = GMT Date format TZ = PST Calendar TZ = GMT This example shows two bugs, the value of user.timezone is undefined, so its defaulting to GMT (see discussion of TimeZone.getDefault()) and it shows that the DateFormat depends on the 1st locale entry which