Create a style with the desired height and apply it to the cells that you want to display in this way. Documentation can help you. For a moment I thought that there was a way to set the height by styles ...
The documentation for the method you specify ... "set the default row height for the sheet (if the rows do not define their own height) to twips (1/20 point)." Be sure to enter input in Short
setDefaultRowHeight( (Short) 100)
You can also set the height for the row with row.setHeight (Short)
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