time/format/DateTimeFormatterBuilder.java

911      * pattern contains a colon. If the specified pattern is "+HH", the
913      * hour digits is a colon or not.
921      * <li>{@code +HHmm} - hour, with minute if non-zero, ignoring second, no colon
922      * <li>{@code +HH:mm} - hour, with minute if non-zero, ignoring second, with colon
923      * <li>{@code +HHMM} - hour and minute, ignoring second, no colon
924      * <li>{@code +HH:MM} - hour and minute, ignoring second, with colon
925      * <li>{@code +HHMMss} - hour and minute, with second if non-zero, no colon
926      * <li>{@code +HH:MM:ss} - hour and minute, with second if non-zero, with colon
927      * <li>{@code +HHMMSS} - hour, minute and second, no colon
928      * <li>{@code +HH:MM:SS} - hour, minute and second, with colon
930      * second if non-zero, no colon
932      * second if non-zero, with colon
934      * <li>{@code +Hmm} - hour, with minute if non-zero, ignoring second, no colon
935      * <li>{@code +H:mm} - hour, with minute if non-zero, ignoring second, with colon
936      * <li>{@code +HMM} - hour and minute, ignoring second, no colon
937      * <li>{@code +H:MM} - hour and minute, ignoring second, with colon
938      * <li>{@code +HMMss} - hour and minute, with second if non-zero, no colon
939      * <li>{@code +H:MM:ss} - hour and minute, with second if non-zero, with colon
940      * <li>{@code +HMMSS} - hour, minute and second, no colon
941      * <li>{@code +H:MM:SS} - hour, minute and second, with colon
943      * second if non-zero, no colon
945      * second if non-zero, with colon
976      * and colon.
979      * second if non-zero, and colon.
3584         private void formatZeroPad(boolean colon, int value, StringBuilder buf) {
3585             buf.append(colon ? ":" : "")