I always wondered why Google didn't buy Sun when they had the chance? This (Android's use of Java) has always been a risk for Google. Either in form of the law

I always wondered why Google didn't buy Sun when they had the chance? This (Android's use of Java) has always been a risk for Google. Either in form of the lawsuit but in more general what Oracle (or someone else) would do with Java. Anyways. I hope both companies are smart enough to settle this in a reasonable manner.