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When you create a Java transformation, it includes one input group and one output group.
A Java transformation always has one input group and one output group. The transformation is not valid if it has multiple input or output groups. You can change the existing group names by typing in the group header. If you delete a group, you can add a new group by clicking the Create Input Group or Create Output Group icon.
When you create a port, the
Designer
adds it below the currently selected row or group.
An input/output port that appears below the input group it is also part of the output group. An input/output port that appears below the output group it is also part of the input group.