duplicate form field names

StudentController.java

package com.luv2code.springdemo.mvc;

import java.util.Arrays;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.ModelAttribute;
import org.springframework.web.bind.annotation.RequestMapping;

@Controller
@RequestMapping("/student")
public class StudentController {

	@RequestMapping("/showForm")
	public String showForm(Model theModel) {

		theModel.addAttribute("student", new Student());
		return "student-form";
	}

	@RequestMapping("/processForm")
	public String processForm(@ModelAttribute("student") Student theStudent, HttpServletRequest request) {

		System.out.println("List of parameters from HttpServletRequest");
		Map<String, String[]> parameterMap = request.getParameterMap();

		for (String tempParamName : parameterMap.keySet()) {
			String[] tempParamVal = parameterMap.get(tempParamName);
			
			System.out.println(tempParamName + " =  " + Arrays.asList(tempParamVal));
		}
		
		System.out.println("\n\n");
		System.out.println("Student Details : " + theStudent);

		return "student-confirmation";
	}

}