From Documentation


There are some software you need to install before installing ZK Studio.

Java SE Development Kit (JDK)

Java version 6 or later is required in order to run Eclipse with ZK Studio, you can download it from Oracle official site.

Eclipse IDE for Java EE Developers

ZK Studio is an Eclipse Plug-in, therefore you must install Eclipse. We recommend the Eclipse IDE for Java EE Developers package.


Installation is done simply by extracting the downloaded zip file to a proper local folder. To make sure Eclipse can run on your system, execute eclipse.exe (in Windows) or eclipse (in Unix or Linux). You can locate these files in your extracted eclipse folder.


  1. We recommend modifying some parameters in the configuration file eclipse.ini which will result in performance gain, please refer here and here.
  2. We also recommend setting Eclipse's default JRE to JDK, please refer to the "Setup/Preferences" section in WTP Tutorials – Building and Running a Web Application.

Application Servers

Before developing web applications in Java using ZK Framework, you need to install an application server. Apache Tomcat is one of the most popular web containers. Tomcat versions 6 and 7 are supported and can be downloaded at Apache Tomcat.


Download the zip file of Tomcat distribution and extract it to a proper location (with no illegal characters or space in the path). Tomcat requires configuration before it can be used with Eclipse, this process is described in the following link Running the ZK Project.


If you not only want to develop web applications, but also need to deploy them on Apache Tomcat, links to the official installation instructions for directly running Apache Tomcat in your environment are provided below:

Install ZK Studio

ZK Studio can be installed in several ways. We recommend to install through Marketplace.

Marketplace (Since Eclipse 3.6)

Marketplace is the easiest way to install plugins. Go to menu [Help] > [Eclipse Markpetplace] and search "zk studio" you'll find ZK Studio to install.

Eclipse36 marketplace.png

Update Site

  1. Open Eclipse, click the [Help] menu and select [Install New Software...]. A install window will popup, and then click Add
    Zkstudio installation 35 1.png

  2. Name the site as "ZK Studio" and copy corresponding update site's URL into Location field and click OK.
    The URL of ZK Studio for Eclipse 4.2 and later:
    The URL of ZK Studio for Eclipse 3.7:
    Zkstudio installation 35 2.png

  3. Expand the update entry of ZK Studio, check ZK Studio and then click Next
    Zkstudio installation 35 3.png
    The Eclipse Installation System will now attempt to retrieve information from the update site. This will take some time depending on your eclipse environment, please be patient.
  4. Click Next on the pop-up install wizard dialog.
    Zkstudio installation 35 4.png

    Check "I accept the terms of the license agrement" and click Finish on the wizard dialog.
    Zkstudio installation 35 4 licenses.png

    The Installation process will now begin.
    Zkstudio installation 35 5.png

    If there is a pop-up dialog with unsigned content warning, please click OK to continue.
    Zkstudio installation 35 5 warning.png

  5. Once the installation is complete, please restart Eclipse as prompted.
    Zkstudio installation 35 6.png

Offline Installation

  1. Download the offline installation zip file from ZK Studio download page.
  2. The step is the same as step 1 we do for Update Site. Open Eclipse, click [Help] menu and select [Install New Software...]. An install window will popup, click Add
  3. Click Archive... to open a file explorer. Then, use file explorer to choose downloaded file and click "OK" to install.
    Zkstudio installation 35 manual 2.png

Activate ZK Studio

Removed since ZK Studio 2.0.4.

ZK Studio 2.0.4 and later doesn't require activation.

Visual Editor

Visual Editor is a deprecated feature, it is no longer included in ZK Studio. There are several alternatives:

Add the plugin below in a pom.xml.


Run the goal with

mvn jetty:run

All jetty plugins (or runner) above can quickly start your project in an IDE in seconds without packaging a project as WAR. When you change a zul or a Java class, you don't need to restart the jetty server. It will hot-reload the newly-compiled class. So that you can view the result with your browser, just like Visual Editor can do.


Can't activate in Spring Tool Suite

Spring tool suite 2.6 and later may ask that encrypt/decrypt library must be signed by trusted source. So with STS, in order to activate ZK Studio you need to modify file to enable the license management of ZK Studio, i.e. the Bouncy Castle Cryptography Provider.

First you need to check your jvm version. For Ubuntu/Debian users, run

$ update-java-alternatives –l

You should be seeing:

java-6-sun 63 /usr/lib/jvm/java-6-sun

To get your Bouncy Castle running correctly:

  • 1.Search for in /path_to_your_jvm/jre/lib/security
  • 2.Should look like:
# (some info)
  • 3.Add security.provider.X=org.bouncycastle.jce.provider.BouncyCastleProvider as the last provider. In the sample above you will add
  • 4. Visit Bouncy Castle ( and search for bcprov-jdkxx-xxx.jar according to your JVM version. Add it to /path_to_your_jvm/jre/lib/ext
  • 5.Remove any other undesired bcprov-jdkxx-xxx.jar from your class path.

After you have successfully run the Bouncy Castle Cryptography Provider you should be able to activate ZK Studio. If there is still an issue please contact [email protected] for further assistance.

WTP not installed

If you get the following error message while installing ZK Studio, that means you are not using Eclipse for JavaEE Developers, and you need to install Eclipse WTP plug-in manually or download Eclipse for JavaEE Developers.

Cannot complete the install because one or more required items could not be found.
Software currently installed: ZK Studio Eclipse Plugins 0.9.6.v200912041237 ( 0.9.6.v200912041237)
Missing requirement: ZK Studio Storage Plug-in 0.9.6.v200912041237 (org.zkoss.eclipse.zks 0.9.6.v200912041237) requires 'bundle org.eclipse.wst.common.project.facet.ui 0.0.0' but it could not be found
Cannot satisfy dependency:  From: ZK Studio Eclipse Plugins 0.9.6.v200912041237 ( 0.9.6.v200912041237)
To: [0.9.6.v200912041237]
Cannot satisfy dependency:  From: ZK Studio Visual Editor Plug-in 0.9.6.v200912041237 ( 0.9.6.v200912041237)
To: bundle org.zkoss.eclipse.zks 0.0.0

Still have problem?

Please contact [email protected] if there's any issue after referencing the above note.

Last Update : 2022/01/19

Copyright © Potix Corporation. This article is licensed under GNU Free Documentation License.