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how to ovaerload the method........ please explain with example

hi all, how to overload the constructor!!!!!!! explain with example

i have the following xml file.how to display the first tag (tag by tag) then when next button are click the second tag is display <?xml version="1.0"?> <records> <reg > <name>hari</name> <age>22</age> <mark>67</mark> </reg> </records> <records> <reg > <name>hari</name> <age>20</age> <mark>78</mark> </reg> </reg> <reg> <book > <name>hari</name> <age>21</age> <mark>88</mark> </reg> …

how can load the xml tag(parent) one by one(when click next button)

i have the student record .excel file. how can i display the student detial one by one(when next buuton is pressed)