How to Loop Through a Map in Java Using JSTL on a JSP

Quick info for reference.
Loop through a Map and output the Key and Value data using;

<c:forEach items="${map}" var="entry">
  Key: <c:out value="${entry.key}"/>
  Value: <c:out value="${entry.value}"/>
</c:forEach>

If you have an object within the Key:Value pair, such as within an object Map(), you can get this data as follows;

${map.key}

Then you can iterate over the above list using the code to get the Attribute data within the CustomerInformation object a follows;

<c:forEach items="${map.value}" var="customerInformation"> 
  <tr>
    <td>${customerInformation.firstName}</td>
  </tr>
</c:forEach>

The following two tabs change content below.

• Bio
• Latest Posts

Michael Cropper

Founder & Managing Director at Contrado Digital Ltd

Michael founded Contrado Digital in 2013. He has experience working with national and multi-national brands in a wide range of industries, helping them achieve awesome results. Michael regularly speaks at local universities and industry events while keeping up with the latest trends in the digital industry.

Latest posts by Michael Cropper (see all)

• Understanding the Difference Between BIOS Boot Modes Legacy VS UEFI - August 31, 2021
• Election Day Ballot Box Results Using Agile Delivery Methodology - May 6, 2021
• How to Setup Let’s Encrypt on AWS EC2 Using Amazon Linux 2 - May 2, 2021