What you get
The 'Java translations tool' reads your spreadsheet data and generates a new file adhering to Java properties
standard. There is no guarantee on the validity of the generated files. There is no guarantee that all translations will be properly included (especially if they contain nasty special characters). There really is no guarantee for anything.
The 'Java translations tool' doesn't gather or track any information whatsoever. It only accesses your Google Drive when exporting a spreadsheet to a Java properties file.
What you don't get
The tool is provided 'as is', and use it entirely at your own risk.