java - JSP - How do I print out empty when values are duplicated? -


Below I have a JSP code that prints the first picture. What I am trying to achieve in the second picture.

I have a total of 8 columns before 4 columns are printed as long as there is data from the internal inner table, in which the last 4 columns are included, where the data is different. I want to print empty data or place in columns and rows where the information from above is repeated. I can be up to 6 rows for every ID (so far left). 

  & lt; Table range = "1" width = "100%" & gt; & Lt; TR & gt; & Lt; Th & gt; Student ID & lt; / Th & gt; & Lt; Th & gt; Last name & lt; / Th & gt; & Lt; Th & gt; First name & lt; / Th & gt; & Lt; Th & gt; Grade & lt; / Th & gt; & Lt; Th & gt; Events & lt; / Th & gt; & Lt; Th & gt; Interaction Level & lt; / Th & gt; & Lt; Th & gt; Ind / Team & lt; / Th & gt; & Lt; Th & gt; Event name & lt; / Th & gt; & Lt; / TR & gt; & Lt; C: forEach var = "line" item = "$ {result.rows}" & gt; & lt;% theStudentId = 123; & Gt%; & lt;% System.out.println ("at" + (new java.util.Date ()), "Student ID" + theStudentId;); & Gt%; & Lt; TR & gt; & Lt; Td> & Lt; C: out value = "$ {row.idStudents}" /> gt; & Lt; / Td> & Lt; Td> & Lt; c: out value = "$ {row.LastName}" /> gt; & Lt; / Td> & Lt; Td> & Lt; C: Out value = "$ {row.FirstName}" /> gt; & Lt; / Td> & Lt; Td> & Lt; c: out value = "$ {row.Grade}" /> & Lt; / Td> & Lt; Td> & Lt; C: out value = "$ {row.idEvents}" /> gt; & Lt; / Td> & Lt; Td> & Lt; c: out value = "$ {row.Grade}" /> & Lt; / Td> & Lt; Td> & Lt; c: Out value = "$ {row.Type}" /> gt; & Lt; / Td> & Lt; Td> & Lt; c: out value = "$ {row.Name}" /> & lt; / Td> & Lt; / TR & gt; & Lt; / C: foreach & gt;   
  
 It is that JSP prints from now on.  
 present  
 That's what I want to get.  
 target 
 
 
 
 You need to keep track of the last value. Before this part:  
  & lt; C: forEach var = "line" item = "$ {result.rows}" & gt;   
 You should create a variable named  lastStudentId  (initially zero).  
 Inside the loop, check to see if the current student ID is equal to the final student ID (I can not tell how to do this because you did not provide type information for those areas I think they are wires). If this is the same as the previous one, then print the blank TD (e.g., one containing & amp; nbsp;). If it is not, then you normally do this.  
 At the bottom of the loop, assign  final student ID = line.add student  and you can go.

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