Learning Pentaho Data Integration 8 CE - Third Edition

Testing the Java Class using the Test class button

The method to test the code in a Java Class step is similar to the one that you saw in the JavaScript section:

1. Click on the Test class button at the bottom of the window.
2. A window appears to create a set of rows for the testing. Fill it in as shown in the screenshot:

Sample data

3. Click on Preview and a window appears showing ten identical rows with the provided sample values.
4. Click on OK in the preview window to test the code.

5. A window appears with the result of having executed the code on the test data:

Previewing the result of a Java Class code

As you can see, after confirming the ...