Map Iteration

You can also use <c:forEach> to iterate over Maps.

• With a Map, the var attribute represents a map entry - a key/value pair.

• You must use its key and value properties to access the actual data.

  Map<Integer, Student> studentMap = new HashMap<>();
  studentMap.put(12, s1);
  studentMap.put(9, s2);
  
  req.setAttribute("mapStudents", studentMap);
  

<select name="students">
  <c:forEach var="student" items="${mapStudents}">
    <option value="${student.key}">${student.value.name}</option>
  </c:forEach>
</select>

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