How do I edit Excel Spreadsheet shared over sharepoint.com using java
<p>At my work I have a to keep records of all the supports I have provided to the clients of our company in an Online Excel sheet. Now being a java developer I find this very boring task and it also consumes my time as same data I have to copy paste 2-3 places. Can someone please tell how can I automate this using java. 
Attached is the snapshot of my online excel sheet., we call it support tracker. 
Under Support_Tracker we have to maintain all the supports we have provided to every project. </p>

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<p>Then right to that(SalesForce_issue_tracer, Servicenow_issue_tracker) are the products for which we provide support. Now to these products sheet, I have to copy paste the data from Support_Tracker. I want to automate all this stuuf. 
Please tell how can I achieve this. 
I google it and found some APIs, one of them is Apache POI, but I am not sure whether I can edit an Online Excel fine using this.
Excel fine is on sharePoint.com.
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