Introduction. I recently ran into a PDF file that I was unable to read. I couldn’t see any text, only the images. My guess is that the person who created the PDF file. Introduction. Microsoft Excel allows users to password protect spreadsheets in a workbook. Protected spreadsheets can only be modified by entering the. How to Unlock a PDF File for Printing. Ensode Online PDF Unlocker. Navigate to ‘ with your Internet browser. Desbloquear archivos PDF en.
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Introduction Microsoft Excel allows users to password protect spreadsheets in a workbook. Protected spreadsheets can only be modified by entering the password selected by the person who protected the spreadsheet. Sometimes these passwords are lost, and we are left without the ability to modify said spreadsheets.
There are utilities that can be used to either unlock or recover the password, but sometimes these tools are not available. Luckily, with a little bit of programming expertise and the help of a Java library called JExcelApi, we can fairly easily enaode.net an Excel spreadsheet.
PDF Unlock Utility : David R. Heffelfinger
With the help of JExcelApi, we can load a password protected Microsoft Excel spreadsheet into memory, unprotect any protected sheets, and write back an unprotected copy back to disk. The following code example illustrates how to do this.
As can be seen in the above example, we can read an existing Excel spreadsheet into memory by calling the Workbook. This method takes an instance of java. File as its only parameter, and returns an instance of the jxl.
Workbook class, this object contains an in-memory representation of the spreadsheet. Once we have an in-memory representation of the Excel spreadsheet, we can create an in-memory copy of it by calling the Ensode.nwt. File containing the location where we want to write the unlocked spreadsheet, and the instance of jxl. Workbook we obtained earlier as parameters. This method call will return an instance of jxl.
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WritableWorkbookwich is basically a modifiable in-memory representation of the Excel spreadsheet. To unlock or unprotect any password protected sheets in the workbook, we call the WriteableWorkbook.
This method will return an array of jxl. These objects represent sheets in the workbook. To unprotect any protected sheets, we traverse the array note: This will effectively unprotect any protected sheets in the workbook.
Finally, we write the unprotected workbook to disk by calling the WriteableWorkbook. As can be seen in this article, unprotecting password protected APIs is an almost trivial exercise with the help of JExcelApi.
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