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add some doc

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git-svn-id: https://svn.apache.org/repos/asf/poi/trunk@1923767 13f79535-47bb-0310-9956-ffa450edef68
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PJ Fanning 2025-02-12 23:52:17 +00:00
parent bff0b98095
commit d6d403371a
1 changed files with 20 additions and 18 deletions
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38
poi/src/main/java/org/apache/poi/ss/usermodel/DateUtil.java
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@ -719,24 +719,26 @@ public class DateUtil {
* @see #isADateFormat(int, java.lang.String)
*/
public static boolean isInternalDateFormat(int format) {
switch(format) {
// Internal Date Formats as described on page 427 in
// Microsoft Excel Dev's Kit...
case 0x0e:
case 0x0f:
case 0x10:
case 0x11:
case 0x12:
case 0x13:
case 0x14:
case 0x15:
case 0x16:
case 0x2d:
case 0x2e:
case 0x2f:
return true;
}
return false;
switch(format) {
// Internal Date Formats as described on page 427 in
// Microsoft Excel Dev's Kit...
// see also javadoc in org.apache.poi.ss.usermodel.BuiltinFormats
case 0x0e:
case 0x0f:
case 0x10:
case 0x11:
case 0x12:
case 0x13:
case 0x14:
case 0x15:
case 0x16:
// the 0x2d to 0x2f formats are time (only) formats
case 0x2d:
case 0x2e:
case 0x2f:
return true;
}
return false;
}
/**