Update Application.java

src/main/java/Application.java

-
 import org.apache.poi.openxml4j.exceptions.InvalidFormatException;
 import org.apache.poi.ss.usermodel.Row;
 import org.apache.poi.ss.usermodel.Sheet;
@@ -33,9 +32,11 @@ public class Application {
         for (int row = 0; row < sheet.getLastRowNum() + 1; row++) {
             // get data
             Row r = sheet.getRow(row);
-            String index = String.format("%03.0f", Float.parseFloat(r.getCell(0).toString().trim()));
-            String name = r.getCell(1).toString().trim();
-            list.add(new CustomData(index, name,"out"+index+".docx"));
+            if(r.getCell(0)!= null){
+                String index = String.format("%03.0f", Float.parseFloat(r.getCell(0).toString().trim()));
+                String name = r.getCell(1).toString().trim();
+                list.add(new CustomData(index, name,"out"+index+".docx"));
+            }
         }
         return list;
     }