public class TestSys {
//@Test
public void testSysDefault() {
Properties sysProperties = System.getProperties();
Set<Map.Entry<Object, Object>> sysSet = sysProperties.entrySet();
Iterator<Entry<Object, Object>> sysIter = sysSet.iterator();
while (sysIter.hasNext()) {
Entry<Object, Object> sysEntry = sysIter.next();
System.out.println(sysEntry.getKey());
System.out.println(sysEntry.getValue());
}
}
@Test
public void testTime() {
System.out.println(TimeZone.getDefault().getID());
SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
System.out.println(df.format(new Date()));
Calendar c = Calendar.getInstance();
int year = c.get(Calendar.YEAR);
int month = c.get(Calendar.MONTH) + 1;
int date = c.get(Calendar.DATE);
int hour = c.get(Calendar.HOUR_OF_DAY);
int minute = c.get(Calendar.MINUTE);
int second = c.get(Calendar.SECOND);
System.out.format("%4d-%2d-%2d %2d:%2d:%2d\n", year, month, date, hour, minute, second);
System.setProperty("user.timezone", "Asia/Shanghai");
System.out.println(TimeZone.getDefault().getID());
System.out.println(df.format(new Date()));
System.out.println(df.format(Calendar.getInstance().getTime()));
}
}