Smart JVM and JIT Micro-Optimizations

Question

Over time, Sun\'s JVM and JIT have gotten pretty smart. Things that used to be common knowledge as being a necessary micro-optimization are no longer needed, because it gets ta

Answer 1

Java is smarter at inlining as it can

• inline code only available at runtime or even dynamically generated.
• inline virtual methods (up to two at once)
• perform escape analysis on inlined methods and the methods they were inlined to. (Much harder to do in C++)