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spreadsheet cell style and merge cells

kirubakaran M
5 years ago Mar 01, 2017 1:04pm

how can i style and merge cells without affects  other sheets in spreadsheet

spreadsheet sheet=new spreadsheet();
CellRangeAddress s=new CellRangeAddress(start_row,start_row ,start_col ,end_col);
 sheet.getActiveSheet().addMergedRegion(s);
sheet.createnewsheet("name",100,10);
CellRangeAddress s=new CellRangeAddress(start_row,start_row ,start_col ,end_col);
sheet.getActiveSheet().addMergedRegion(s);

both mergedregion comes in same range but sheets are different

when am run this  code it throws llegal state exception or null pointer exception