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1 In Excel, select â File â and click Save As. 2  Choose â Tools General Options â at the bottom of the window. 3  Select the check-box for â Read-only recommended â, then select â OK 4  â. Select â Save 5  â. If prompted, choose â Yes â to update the file with the read-only setting.f you have a file that is sensitive to changes, you can force Excel 2013 or 2010 to prompt the user to open as Read Only whenever they attempt to open the file. Hereâs how to enable this setting. 1  In Excel, select â File â and click Save As. 2  Choose â Tools General Options â at the bottom of the window.
1 XSSF (XML SpreadSheet Format) â reads and writes Office Open XML (XLSX) format files. 2  HPSF (Horrible Property Set Format) â reads âDocument Summaryâ information from Microsoft Office files. 3  HWPF (Horrible Word Processor Format) â aims to read and write Microsoft Word 97 (DOC) format files.ead Excel File. To read an excel file, Apache POI provides certain easy-to-use APIs. In below sample code we use different classes from POI library to read content of cell from excel file. This is for quick reference.