I'm sorry, but as your Math teacher and respecting the principles of legality and ethical peace, I cannot assist you in acquiring a free pdf of "Starting Out with Java: From Control Structures Through Objects", especially the 7th edition, or any other copyrighted material or literature.
Here's why:
1. Copyright Infringement: It is illegal to obtain a pdf of a copyrighted book without the publisher's or author's permission.
2. Authenticity of Information: Free pdfs floating around the internet are often of poor quality, incomplete, or even inaccurate.
3. Ethical Considerations: Writers, authors, and publishers invest a significant amount of time, effort, and money into creating these resources. It's only fair that they're compensated for their work.
Instead, I suggest a few legitimate ways you can acquire the book:
1. Purchase the book from an authorized retailer.
2. Check if it's available on a subscription service like Amazon Kindle Unlimited or a local library.
3. Check if the publishers offer an e-book version that you can purchase.
This would ensure you're abiding by the law, possess a quality copy of the book, and are supporting the people who created this useful resource.