The setNull method sets the value of an output column in an active or passive Java transformation to null. After you set an output column to null, you cannot modify the value until you generate an output row.

You can add the setNull method to the Java code on any code entry tab except the

Import Packages

and

Java Expressions

tabs.

The following Java code shows how to check the value of an input column and set the corresponding value of an output column to null:

// check value of Q3RESULTS input column
if(isNull("Q3RESULTS")) {
     // set the value of output column to null
     setNull("RESULTS");
}

Alternatively, you can use the following Java code achieve the same results:

// check value of Q3RESULTS input column
String strColName = "Q3RESULTS";
if(isNull(strColName)) {
     // set the value of output column to null
     setNull(strColName);
}