How to make password in excel file

- How to make password protected excel file
- How to make password to open excel file
- How to make excel file password protected and read only
- How to make a password protected excel file unprotected
- How to make excel file password unprotected
- How to make excel file not password protected
- How to make excel file password protected in java
- How to make excel file password protected in office 2007
- How to remove password from excel file