我有一个XML 的文件当我用JAVA SAX 把它的资料拿出的时候遇到 <MANAGER/> 这个是代表什么意思呢？我应该怎么把是不是MANAGER这个元素拿出来呢 拿出来呢？
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xml 文件
<?xml version = "1.0 " standalone = "yes "?>
<!DOCTYPE COMPANY [
<!ELEMENT COMPANY (DEPARTMENT+)>
<!ELEMENT DEPARTMENT (STAFFLIST)>
<!ATTLIST DEPARTMENT
NAME CDATA #REQUIRED
>
<!ELEMENT STAFFLIST (FULLTIMESTAFF|PARTTIMESTAFF)+>
<!ELEMENT FULLTIMESTAFF (NAME, ID, SALARY, MANAGER?)>
<!ELEMENT PARTTIMESTAFF (NAME, ID, HOURLYSALARY)>
<!ELEMENT SALARY (#PCDATA)>
<!ELEMENT ID (#PCDATA)>
<!ELEMENT NAME (#PCDATA)>
<!ELEMENT MANAGER EMPTY>
<!ELEMENT HOURLYSALARY (#PCDATA)>
]>
<COMPANY>
<DEPARTMENT NAME = "Product Development ">
<STAFFLIST>
<FULLTIMESTAFF>
<NAME> John Tan Seng Huat </NAME>
<ID> S6512345J </ID>
<SALARY> 4500.00 </SALARY>
<MANAGER/>
</FULLTIMESTAFF>
<FULLTIMESTAFF >
<NAME> Peter Chua Sim Lai </NAME>
<ID> S6934345C </ID>
<SALARY> 2800.00 </SALARY>
</FULLTIMESTAFF>
<PARTTIMESTAFF>
<NAME> Cindy Lam Lian Choo </NAME>
<ID> S6734322K </ID>
<HOURLYSALARY> 35.00 </HOURLYSALARY>
</PARTTIMESTAFF>
<FULLTIMESTAFF >
<NAME> Anisah Bte Ismail </NAME>
<ID> S6922339B </ID>
<SALARY> 3100.00 </SALARY>
</FULLTIMESTAFF>
</STAFFLIST>
</DEPARTMENT>
<DEPARTMENT NAME = "Customer Service ">
<STAFFLIST>
<FULLTIMESTAFF>
<NAME> Noor Ali Bin Mohamed </NAME>
<ID> S6412388J </ID>
<SALARY> 4200.00 </SALARY>
<MANAGER/>
</FULLTIMESTAFF>
<FULLTIMESTAFF>
<NAME> Hanisah Bte Salleh </NAME>
<ID> S6934311F </ID>
<SALARY> 1800.00 </SALARY>
</FULLTIMESTAFF>
</STAFFLIST>
</DEPARTMENT>
<DEPARTMENT NAME = "Sales and Publicity ">
<STAFFLIST>
<FULLTIMESTAFF>
<NAME> Linda Peh Xue Li </NAME>
<ID> S6423451J </ID>
<SALARY> 3500.00 </SALARY>
<MANAGER/>
</FULLTIMESTAFF>
<FULLTIMESTAFF>
<NAME> Thomas Lye Meng Poh </NAME>
<ID> S7234344F </ID>
<SALARY> 1800.00 </SALARY>
</FULLTIMESTAFF>
<PARTTIMESTAFF>
<NAME> Eugene Oliver John </NAME>
<ID> S7533213F </ID>
<HOURLYSALARY> 12.00 </HOURLYSALARY>
</PARTTIMESTAFF>