src/java.base/share/classes/java/util/zip/ZipUtils.java

*** 97,109 ****
          Date d = new Date(time);
          int year = d.getYear() + 1900;
          if (year < 1980) {
              return ZipEntry.DOSTIME_BEFORE_1980;
          }
!         return (year - 1980) << 25 | (d.getMonth() + 1) << 21 |
                 d.getDate() << 16 | d.getHours() << 11 | d.getMinutes() << 5 |
!                d.getSeconds() >> 1;
      }
  
      /**
       * Converts Java time to DOS time, encoding any milliseconds lost
       * in the conversion into the upper half of the returned long.
--- 97,109 ----
          Date d = new Date(time);
          int year = d.getYear() + 1900;
          if (year < 1980) {
              return ZipEntry.DOSTIME_BEFORE_1980;
          }
!         return ((year - 1980) << 25 | (d.getMonth() + 1) << 21 |
                  d.getDate() << 16 | d.getHours() << 11 | d.getMinutes() << 5 |
!                 d.getSeconds() >> 1) & 0xffffffffL;
      }
  
      /**
       * Converts Java time to DOS time, encoding any milliseconds lost
       * in the conversion into the upper half of the returned long.