When Java runs faster than C++?

Following are the areas where Java has proved itself faster than C++.

• Memory allocation/deallocation: Memory allocation/deallocation is much faster and it is often faster to create a new big array instead of using the cached one.
• Object instantiation: Memory management done by GC of Java attributes faster object related operations on Java than C++.
• Multithreading and Synchronization: Modern Java programs makes use of multi-core systems to make synchronization and multithreading much faster operation.
• JIT has improved a lot over period of time and modern Java program execution now is much faster.
• String operations are faster by having length. 
• Collection methods are optimized like Array copy.
• Class loading has improved a lot over period of time and modern Java program class loading now is much faster.