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Editorial Team
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Asked: 2026-05-31T04:26:55+00:00

I have below 1) StudentDAO.java -> has a method to list all students 2)

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I have below

1) StudentDAO.java -> has a method to list all students

2) ListStudentServlet.java -> Contorller to get the list and send to jsp

3) ListStudent.jsp -> Display Student List

Now I want to add condtions such as

studentId greater than, less than, equals, etc
StudentName like ‘%A%
StudentDOB between date1 and date2

what’s the best approach to get results based on above conditions. Do I need to creat separate methods for each of the condition or can i have one method with different where clauses?

Please can you an example?

thanks

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1 Answer

  1. Editorial Team

    You can supply different GET parameters to the servlet. For example:

    • ?operator=greaterThan&column=studentId&value=5
    • ?operator=like&column=name&value=%A

    You can also have these things coded in the servlet itself, and only submit one parameter that identifies the combination. For example, if you have a list of queries, you can have ?queryId=5

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